NOAA Professional Paper NMFS 19 An annotated checklist of the marine macroinvertebrates of Alaska David T. Drumm • Katherine P. Maslenikov Robert Van Syoc • James W. Orr • Robert R. Lauth Duane E. Stevenson • Theodore W. Pietsch November 2016 U.S. Department NOAA Professional of Commerce Penny Pritzker Papers NMFS Secretary of Commerce National Oceanic and Atmospheric Administration Kathryn D. Sullivan Scientific Editor* Administrator Richard Langton National Marine National Marine Fisheries Service Northeast Fisheries Science Center Fisheries Service Maine Field Station Eileen Sobeck 17 Godfrey Drive, Suite 1 Assistant Administrator Orono, Maine 04473 for Fisheries Associate Editor Kathryn Dennis National Marine Fisheries Service Office of Science and Technology Economics and Social Analysis Division 1845 Wasp Blvd., Bldg. 178 Honolulu, Hawaii 96818 Managing Editor Shelley Arenas National Marine Fisheries Service Scientific Publications Office 7600 Sand Point Way NE Seattle, Washington 98115 Editorial Committee Ann C. Matarese National Marine Fisheries Service James W. Orr National Marine Fisheries Service The NOAA Professional Paper NMFS (ISSN 1931-4590) series is pub- lished by the Scientific Publications Of- *Bruce Mundy (PIFSC) was Scientific Editor during the fice, National Marine Fisheries Service, scientific editing and preparation of this report. NOAA, 7600 Sand Point Way NE, Seattle, WA 98115. The Secretary of Commerce has The NOAA Professional Paper NMFS series carries peer-reviewed, lengthy original determined that the publication of research reports, taxonomic keys, species synopses, flora and fauna studies, and data- this series is necessary in the transac- intensive reports on investigations in fishery science, engineering, and economics. tion of the public business required by Copies of the NOAA Professional Paper NMFS series are available free in limited law of this Department. Use of funds numbers to government agencies, both federal and state. They are also available in for printing of this series has been ap- proved by the Director of the Office exchange for other scientific and technical publications in the marine sciences. Profes- of Management and Budget. sional Papers are published online in PDF format at http://spo.nmfs.noaa.gov NOAA Professional Paper NMFS 19 An annotated checklist of the marine macroinvertebrates of Alaska David T. Drumm Katherine P. Maslenikov Robert Van Syoc James W. Orr Robert R. Lauth Duane E. Stevenson Theodore W. Pietsch November 2016 U.S. Department of Commerce Seattle, Washington Cover figure (top left to bottom right): Halichondria oblonga (Porifera); Cheilonereis cyclurus (Polychaeta); Tonicella insignis (Polyplacophora); Neptunea lyrata (Gastropoda); Pandalus tridens (Decapoda: Caridea); Oregonia gracilis (Decapoda: Brachyura); brachiopod unidentified (Brachiopoda); Pagurus ochotensis (Decapoda: Anomura); Ophiura sarsii (Ophiuroidea); Pteraster octaster (Asteroidea). Suggested reference Drumm, David T., Katherine P. Maslenikov, Robert Van Syoc, James W. Orr, Rob- ert R. Lauth, Duane E. Stevenson, and Theodore W. Pietsch. 2016. An annotated checklist of the marine macroinvertebrates of Alaska. NOAA Professional Paper NMFS 19, 289 p. doi:10.7755/PP.19 Online dissemination This report is posted online in PDF format at http://spo.nmfs.noaa.gov (click on Professional Papers link). Copyright law Although the contents of the Professional Papers have not been copyrighted and may be reprinted entirely, reference to source is appreciated. Proprietary products The National Marine Fisheries Service (NMFS) does not approve, recommend, or endorse any proprietary product or proprietary material mentioned in this publi- cation. No reference shall be made to NMFS, or to this publication furnished by NMFS, in any advertising or sales promotion which would indicate or imply that NMFS approves, recommends, or endorses any proprietary product or proprietary material mentioned herein, or which has as its purpose an intent to cause directly or indirectly the advertised product to be used or purchased because of this NMFS publication. Disclaimer The findings and conclusions in this report are those of the author(s) and do not necessarily represent the views of the National Marine Fisheries Service (NOAA). CONTENTS Introduction ................................................................1 Order Astrophorida ........................................16 Methods ......................................................................2 Family Ancorinidae ...................................16 Data sources ................................................................3 Family Geodiidae ......................................17 Marine geography of Alaska .......................................4 Family Vulcanellidae .................................17 Current status and future directions ............................7 Order Clionaida .............................................17 Checklist ...................................................................12 Family Clionaidae .....................................17 Phylum Porifera—The Sponges .................................12 Order Polymastiida ........................................17 Class Calcarea ......................................................12 Family Polymastiidae ................................17 Subclass Calcaronea ...........................................12 Order Tethyida ...............................................18 Order Baerida .................................................12 Family Tethyidae ......................................18 Family Baeriidae .......................................12 Order Suberitida .............................................18 Order Leucosolenida ......................................12 Family Suberitidae ....................................18 Family Amphoriscidae ..............................12 Family Halichondriidae ............................18 Family Grantiidae .....................................12 Family Stylocordylidae .............................19 Family Leucosoleniidae .............................13 Order Haplosclerida .......................................19 Family Sycettidae ......................................13 Family Callyspongiidae .............................19 Subclass Calcinea ................................................13 Family Chalinidae .....................................19 Order Clathrinidae .........................................13 Family Niphatidae ....................................20 Family Clathrinidae ..................................13 Family Petrosiidae ....................................20 Class Hexactinellida .............................................13 Order Poecilosclerida .....................................21 Subclass Amphidiscophora ................................13 Family Acarnidae ......................................21 Order Amphidiscosida ....................................13 Family Microcionidae ...............................21 Family Hyalonematidae ............................13 Family Coelosphaeridae ............................22 Subclass Hexasterophora ....................................13 Family Crambeidae ...................................23 Order Hexactinosida ......................................13 Family Crellidae .......................................23 Family Farreidae .......................................13 Family Hymedesmiidae .............................23 Family Euretidae .......................................13 Family Iotrochotidae ................................23 Family Aphrocallistidae ............................14 Family Myxillidae .....................................23 Family Tretodictyidae ...............................14 Family Phellodermidae .............................24 Order Lyssacinosida .......................................14 Family Tedaniidae .....................................24 Family Euplectellidae ................................14 Family Cladorhizidae ................................24 Family Rossellidae ....................................14 Family Guitarridae ...................................24 Class Homoscleromorpha .....................................16 Family Esperiopsidae ................................25 Order Homosclermorphida ............................16 Family Mycalidae .....................................25 Family Plakinidae .....................................16 Family Isodictyidae ...................................26 Class Demospongiae .............................................16 Family Latrunculiidae ...............................26 Subclass Keratosa ...............................................16 Order Axinellida ............................................26 Order Dendroceratida ....................................16 Family Axinellidae ....................................26 Family Darwinellidae ................................16 Family Raspaillidae ..................................26 Order Dictyoceratida ......................................16 Order Bubarida ..............................................26 Family Dysideidae ....................................16 Family Bubaridae ......................................26 Subclass Heteroscleromorpha .............................16 Order Biemnida ..............................................26 Order Tetractinellida ......................................16 Family Biemnidae .....................................26 Suborder Spirophorina .................................16 Phylum Cnidaria .......................................................27 Family Tetillidae .......................................16 Class Hydrozoa—The Hydroids, Hydrocorals, Order Merliida ...............................................16 and Siphonophores ..............................27 Family Hamacanthidae .............................16 Order Anthoathecata ......................................27 Order Agelasida..............................................16 Suborder Capitata ........................................27 Family Hymerhabdiidae ...........................16 Family Candelabridae ...............................27 iv Professional Paper NMFS 19 Family Corymorphidae .............................27 Family Agalmatidae ..................................40 Family Corynidae .....................................27 Family Physophoridae ..............................40 Family Polyorchidae .................................28 Class Anthozoa—Hard Corals, Soft Corals, Family Porpitidae .....................................28 Black Corals, Sea Fans, Sea Pens, Family Protohydridae ...............................28 and Sea Anemones ...............................40 Family Tubulariidae ..................................28 Subclass Octocorallia ..........................................41 Suborder Filifera ..........................................29 Order Alcyonacea (soft corals, sea fans Family Bougainvilliidae ............................29 and sea whips, and stoloniferans) ........41 Family Bythotiaridae ................................29 Suborder Stolonifera ...................................41 Family Eudendriidae .................................30 Family Clavulariidae ................................41 Family Pandeidae ......................................30 Suborder Alcyoniina (soft corals) .................41 Family Proboscidactylidae ........................31 Family Alcyoniidae ...................................41 Family Rathkeidae ....................................31 Family Nidaliidae .....................................42 Family Stylasteridae (hydrocorals) ............31 Family Nephtheidae ..................................42 Family incertae sedis .................................33 Suborder Scleraxonia ...................................42 Order Leptothecata ........................................33 Family Anthothelidae ................................42 Suborder Conica ..........................................33 Family Coralliidae ....................................42 Family Aequoreidae ..................................33 Family Paragorgiidae ................................42 Family Aglaopheniidae .............................33 Suborder Holaxonia .....................................42 Family Campanulinidae ............................33 Family Acanthogorgiidae ..........................42 Family Eirenidae .......................................33 Family Plexauridae ...................................42 Family Halecidae ......................................33 Family Primnoidae ....................................43 Family Halopterididae ..............................34 Suborder Calcaxonia ....................................44 Family Lafoeidae ......................................34 Family Isididae (bamboo corals) ...............44 Family Laodiceidae ...................................34 Order Pennatulacea (sea pens and Family Melicertidae ..................................35 sea pansies) .........................................44 Family Mitrocomidae ...............................35 Suborder Subsessiliflorae ..............................44 Family Plumulariidae ................................35 Family Halipteridae ..................................44 Family Sertulariidae ..................................35 Family Pennatulidae .................................45 Family Tiarannidae ...................................37 Family Virgulariidae .................................45 Family Tiaropsidae ...................................37 Suborder Sessiliflorae ...................................45 Suborder Proboscoidea .................................38 Family Anthoptilidae ................................45 Family Bonneviellidae ...............................38 Family Umbellulidae .................................45 Family Campanulariidae ...........................38 Family Veretillidae ....................................45 Order Limnomedusae .....................................39 Subclass Ceriantipatharia ...................................45 Family Monobrachiidae ............................39 Order Antipatharia (black corals) ...................45 Family Olindiasidae ..................................39 Family Cladopathidae ...............................45 Order Narcomedusae .....................................39 Family Schizopathidae ..............................45 Family Aeginidae ......................................39 Subclass Hexacorallia (sea anemones Family Cuninidae .....................................39 and true corals) ....................................45 Order Trachymedusae ....................................39 Order Actiniaria (sea anemones).....................45 Family Halicreatidae .................................39 Suborder Nynanthae ....................................45 Family Ptychogastriidae ............................39 Infraorder Athenaria ....................................45 Family Rhopalonematidae .......................39 Family Edwardsiidae ................................45 Order Siphonophorae ....................................40 Family Halcampoididae ............................46 Suborder Calycophorae ...............................40 Family Haloclavidae ................................46 Family Clausophyidae ..............................40 Family Diadumenidae ...............................46 Family Diphyidae ....................................40 Family Hormathiidae ...............................46 Family Prayidae .......................................40 Family Metridiidae ...................................47 Suborder Physonectae ..................................40 No Rank Endomyaria ....................................47 Contents v Family Actiniidae ......................................47 Phylum Platyhelminthes—The Free-living Family Condylanthidae ............................49 Flatworms ...........................................53 Family Liponematidae .............................49 Class Turbellaria ...................................................53 Family Minyadidae ...................................49 Order Polycladida ..........................................53 Family Ptychodactinidae ..........................49 Suborder Acotylea ........................................53 No Rank Mesomyaria ....................................50 Superfamily Stylochoidea ...........................53 Family Actinoscyphiidae ..........................50 Family Callioplanidae ...............................53 Family Actinostolidae ..............................50 Superfamily Leptoplanoidea .......................53 Order Ceriantharia .........................................50 Family Notoplanidae ................................53 Suborder Spirularia ......................................50 Family Pleioplanidae .................................53 Family Cerianthidae .................................50 Suborder Cotylea .........................................53 Superfamily Euryleptoidea .........................53 Order Corallimorpharia ................................50 Family Euryleptidae ..................................53 Family Corallimorphidae .........................50 Order Tricladida .............................................53 Order Zoanthidea .........................................50 Suborder Maricola .......................................53 No Rank Macrocnemina ................................50 Family Nexilidae ......................................53 Family Epizoanthidae ...............................50 Family Nesionidae ....................................53 Order Scleractinia (hard corals) .....................51 Phylum Nemertea—The Ribbon Worms ...................53 Suborder Caryophylliina ..............................51 Class Anopla .........................................................54 Superfamily Caryophyllioidea ....................51 Order Palaeonemertea ....................................54 Family Caryophylliidae .............................51 Family Cephalothricidae ...........................54 Superfamily Flabelloidae ............................51 Family Tubulanidae ..................................54 Family Flabellidae .....................................51 Order Heteronemertea ...................................54 Suborder Dendrophylliina ............................51 Family Lineidae ........................................54 Family Dendrophylliidae ..........................51 Family Valenciniidae .................................55 Class Staurozoa ....................................................51 Class Enopla .........................................................55 Order Stauromedusae .....................................51 Order Hoplonemertea ....................................55 Suborder Eleutherocarpida ...........................51 Suborder Monostilifera ................................55 Family Lucernariidae ...............................51 Family Carcinonemertidae .......................55 Class Scyphozoa (true jellyfishes) ..........................51 Family Emplectonematidae .......................56 Order Coronatae ............................................51 Family Amphiporidae ...............................56 Family Atollidae .......................................51 Family Cratenemertidae ............................57 Family Periphyllidae .................................51 Family Tetrastemmatidae ..........................57 Subclass Discomedusae .......................................52 Order Polystilifera ..........................................57 Order Semaeostomeae ....................................52 Suborder Pelagica .........................................57 Family Cyaneidae .....................................52 Family Pelagonemertidae ..........................57 Family Pelagiidae ......................................52 Family Protopelagonemertidae .................57 Family Ulmaridae .....................................52 Phylum Entoprocta—The Entropocts or Phylum Ctenophora—The Comb Jellies and Sea Kamptozoans .......................................57 Gooseberries ........................................52 Family Pedicellinidae ................................57 Class Tentaculata ..................................................52 Phylum Priapulida—The Penis Worms ......................57 Order Cydippida ............................................52 Family Priapulidae ....................................58 Family Dryodoridae ..................................52 Phylum Annelida .......................................................58 Family Mertensiidae .................................52 Class Polychaeta—The Bristle Worms ...................58 Family Pleurobrachiidae ...........................52 Clade Scolecida ..............................................58 Order Lobata .................................................53 Family Capitellidae ..................................58 Family Bolinopsidae .................................53 Family Arenicolidae ..................................58 Class Nuda ...........................................................53 Family Maldanidae (bamboo worms) .......59 Order Beroida ................................................53 Family Cossuridae ....................................60 Family Beroidae ........................................53 Family Orbiniidae ....................................60 vi Professional Paper NMFS 19 Family Paraonidae ....................................60 Family Sabellariidae ..................................80 Family Opheliidae ....................................61 Family Sabellidae ......................................80 Family Scalibregmidae .............................61 Family Serpulidae .....................................82 Clades Palpata, Aciculata, Phyllodocida, Family Siboglinidae (beard worms) ...........83 Aphroditiformia, and Aphroditoidea ...61 Class Clitellata ......................................................83 Family Aphroditidae .................................61 Subclass Hirudinea—The Leeches .......................83 Family Polynoidae (scale worms) ............. 62 Order Rhynchobdellida ..................................83 Family Pholoidae ......................................64 Family Piscicolidae ...................................83 Family Sigalionidae ...................................65 Phylum Echiura—The Spoon Worms ........................84 Clade Nereidiformia .......................................65 Order Echiuroinea ..........................................84 Family Chrysopetalidae ............................65 Family Bonelliidae ....................................84 Family Hesionidae ....................................65 Family Echiuridae .....................................85 Family Nereidae .......................................65 Phylum Sipuncula—The Peanut Worms ....................85 Family Pilargiidae .....................................66 Family Golfi ngiidae ..................................85 Family Syllidae .........................................66 Family Phascolosomatidae ........................86 Phyllodocida unplaced ....................................68 Phylum Mollusca ......................................................86 Family Phyllodocidae ................................68 Class Aplacophora—The Aplacophora .................86 Family Nephtyidae ...................................69 Subclass Neomeniomorpha ................................87 Family Sphaerodoridae .............................70 Family Dondersiidae ................................87 Family Tomopteridae ................................70 Family Neomeniidae .................................87 Clade Glyceriformia .......................................70 Subclass Chaetodermomorpha ............................87 Family Glyceridae .....................................70 Family Chaetodermatidae .........................87 Family Goniadidae ...................................70 Family Limifossoridae ..............................87 Clade Amphinomida.......................................71 Family Prochaetodermatidae ...................87 Family Euphrosinidae ...............................71 Class Polyplacophora—The Chitons .....................87 Clade Eunicida ...............................................71 Order Lepidopleurida .....................................88 Family Dorvilleidae ..................................71 Suborder Lepidopleurina ..............................88 Family Eunicidae ......................................71 Family Leptochitonidae ............................88 Family Lumbrineridae ..............................71 Order Chitonida .............................................88 Family Oenonidae ....................................72 Suborder Chitonina ......................................88 Family Onuphidae ....................................72 Superfamily Chitonoidea ............................88 Aciculata unplaced .........................................73 Family Ischnochitonidae ...........................88 Clades Canalipalpata and Spionida ................73 Suborder Acanthochitonina ..........................89 Family Apistobranchidae ..........................73 Superfamily Mopalioidea ...........................89 Family Spionidae ......................................73 Family Tonicellidae ...................................89 Family Magelonidae .................................74 (cid:1)Subfamily Tonicellinae.............................89 Family Chaetopteridae ..............................74 (cid:1)(cid:52)(cid:86)(cid:67)(cid:71)(cid:66)(cid:78)(cid:74)(cid:77)(cid:90)(cid:1)Juvenichitoninae ......................90 Family Trochochaetidae ...........................74 Family Schizoplacidae ...............................91 Clades Terebellida and Cirratuliformia ...........74 Family Mopaliidae ...................................91 Family Cirratulidae ..................................74 Class Gastropoda—The Snails and Slugs ..............93 Family Acrocirridae .................................75 Clade Patellogastropoda .................................93 Family Flabelligeridae ..............................75 Superfamily Lottiodea ................................93 Family Sternaspidae ..................................76 Family Acmaeidae .....................................93 Clade Terebelliformia ....................................76 Family Lottiidae .......................................93 Family Ampharetidae ...............................76 Family Lepetidae ......................................94 Family Pectinariidae .................................77 Clade Vetigastropoda .....................................95 Family Terebellidae ...................................78 Superfamily Scissurelloidea ........................95 Family Trichobranchidae ..........................79 Family Scissurellidae ................................95 Clade Sabellida ...............................................79 Superfamily Haliotoidea ...........................95 Family Oweniidae .....................................79 Family Haliotidae .....................................95 viii Professional Paper NMFS 19 Family Limapontiidae .............................130 Class Bivalvia—The Clams, Cockles, Rock Family Hermaeidae .................................130 Jingles, and Scallops...........................135 Clade Nudipleura .........................................130 Subclass Protobranchia .....................................136 Subclade Pleurobranchomorpha .................130 Superfamily Solemyoidea .........................136 Superfamily Pleurobranchoidea ................130 Family Solemyidae ..................................136 Family Pleurobranchidae ........................130 Superfamily Nuculoidea ...........................136 Subclade Nudibranchia ..............................130 Family Nuculidae ...................................136 Clade Euctenidiacea .....................................130 Superfamily Pristiglomoidea .....................136 Subclade Doridacea ....................................130 Family Pristiglomidae .............................136 Superfamily Doridoidea ...........................130 Superfamily Nuculanoidea .......................136 Family Dorididae ....................................130 Family Nuculanidae ................................136 Family Chromodorididae ........................130 Family Malletiidae ..................................137 Family Discodorididae ............................130 Family Neilonellidae ...............................137 Family Akiodorididae .............................131 Family Yoldiidae .....................................137 Superfamily Onchidoridoidea ..................131 Subclass Pteriomorpha ......................................139 Family Onchidorididae ...........................131 Superfamily Arcoidea ...............................139 Family Goniodorididae ...........................132 Family Arcidae ........................................139 Superfamily Polyceroidea .........................132 Superfamily Glycymeridoidea ..................139 Family Polyceridae ..................................132 Family Glycymerididae ...........................139 Family Aegiretidae ..................................132 Superfamily Limopsoidea .........................139 Clades Dexiarchia and Cladobranchia ..........132 Family Limopsidae .................................139 Subclade Dendronotida ..............................132 Superfamily Philobryoidea .......................139 Superfamily Tritonioidea ..........................132 Family Philobryidae ................................139 Family Tritoniidae ..................................132 Superfamily Mytiloidea ............................139 Family Dendronotidae ............................133 Family Mytilidae ....................................139 Family Tethydidae ..................................133 Superfamily Limoidea ..............................141 Superfamily unassigned ............................133 Family Limidae .......................................141 Family Dotidae .......................................133 Superfamily Ostreoidea ............................141 Family Dironidae ....................................133 Family Ostreidae ....................................141 Family Proctonotidae ..............................134 Superfamily Pectinoidea ...........................141 Subclade Euarminida ..................................134 Family Pectinidae ....................................141 Superfamily Arminoidea ...........................134 Family Propeamussidae ..........................142 Family Arminidae ...................................134 Superfamily Anomioidea ..........................143 Subclade Aeolidida .....................................134 Family Anomiidae ...................................143 Superfamily Flabellinoidea .......................134 Subclass Heterodonta .......................................143 Family Flabellinidae ................................134 Superfamily Lucinoidea ............................143 Superfamily Fionoidea .............................134 Family Lucinidae ....................................143 Family Eubranchidae ..............................134 Family Ungulinidae .................................143 Family Tergipedidae ................................134 Family Thyasiridae .................................143 Family Fionidae ......................................135 Superfamily Astartoidea ...........................144 Superfamily Aeolidioidea .........................135 Family Astartidae ....................................144 Family Facelinidae ..................................135 Superfamily Carditoidea ..........................145 Family Aeolidiidae ..................................135 Family Carditidae ...................................145 Informal Groups Pulmonata and Superfamily Galeommatoidea ..................146 Basommatophora ..............................135 Family Lasaeidae ....................................146 Superfamily Siphonarioidea .....................135 Superfamily Glossoidea ............................146 Family Siphonariidae ..............................135 Family Vesicomyidae ..............................146 Clade Systellommatophora ...........................135 Superfamily Cardioidea ............................146 Superfamily Onchidioidea ........................135 Family Cardiidae ....................................146 Family Onchidiidae ................................135 Superfamily Veneroidea ............................147 viii Professional Paper NMFS 19 Family Limapontiidae .............................130 Class Bivalvia—The Clams, Cockles, Rock Family Hermaeidae .................................130 Jingles, and Scallops...........................135 Clade Nudipleura .........................................130 Subclass Protobranchia .....................................136 Subclade Pleurobranchomorpha .................130 Superfamily Solemyoidea .........................136 Superfamily Pleurobranchoidea ................130 Family Solemyidae ..................................136 Family Pleurobranchidae ........................130 Superfamily Nuculoidea ...........................136 Subclade Nudibranchia ..............................130 Family Nuculidae ...................................136 Clade Euctenidiacea .....................................130 Superfamily Pristiglomoidea .....................136 Subclade Doridacea ....................................130 Family Pristiglomidae .............................136 Superfamily Doridoidea ...........................130 Superfamily Nuculanoidea .......................136 Family Dorididae ....................................130 Family Nuculanidae ................................136 Family Chromodorididae ........................130 Family Malletiidae ..................................137 Family Discodorididae ............................130 Family Neilonellidae ...............................137 Family Akiodorididae .............................131 Family Yoldiidae .....................................137 Superfamily Onchidoridoidea ..................131 Subclass Pteriomorpha ......................................139 Family Onchidorididae ...........................131 Superfamily Arcoidea ...............................139 Family Goniodorididae ...........................132 Family Arcidae ........................................139 Superfamily Polyceroidea .........................132 Superfamily Glycymeridoidea ..................139 Family Polyceridae ..................................132 Family Glycymerididae ...........................139 Family Aegiretidae ..................................132 Superfamily Limopsoidea .........................139 Clades Dexiarchia and Cladobranchia ..........132 Family Limopsidae .................................139 Subclade Dendronotida ..............................132 Superfamily Philobryoidea .......................139 Superfamily Tritonioidea ..........................132 Family Philobryidae ................................139 Family Tritoniidae ..................................132 Superfamily Mytiloidea ............................139 Family Dendronotidae ............................133 Family Mytilidae ....................................139 Family Tethydidae ..................................133 Superfamily Limoidea ..............................141 Superfamily unassigned ............................133 Family Limidae .......................................141 Family Dotidae .......................................133 Superfamily Ostreoidea ............................141 Family Dironidae ....................................133 Family Ostreidae ....................................141 Family Proctonotidae ..............................133 Superfamily Pectinoidea ...........................141 Subclade Euarminida ..................................134 Family Pectinidae ....................................141 Superfamily Arminoidea ...........................134 Family Propeamussidae ..........................142 Family Arminidae ...................................134 Superfamily Anomioidea ..........................143 Subclade Aeolidida .....................................134 Family Anomiidae ...................................143 Superfamily Flabellinoidea .......................134 Subclass Heterodonta .......................................143 Family Flabellinidae ................................134 Superfamily Lucinoidea ............................143 Superfamily Fionoidea .............................134 Family Lucinidae ....................................143 Family Eubranchidae ..............................134 Family Ungulinidae .................................143 Family Tergipedidae ................................134 Family Thyasiridae .................................143 Family Fionidae ......................................135 Superfamily Astartoidea ...........................144 Superfamily Aeolidioidea .........................135 Family Astartidae ....................................144 Family Facelinidae ..................................135 Superfamily Carditoidea ..........................145 Family Aeolidiidae ..................................135 Family Carditidae ...................................145 Informal Groups Pulmonata and Superfamily Galeommatoidea ..................146 Basommatophora ..............................135 Family Lasaeidae ....................................146 Superfamily Siphonarioidea .....................135 Superfamily Glossoidea ............................146 Family Siphonariidae ..............................135 Family Vesicomyidae ..............................146 Clade Systellommatophora ...........................135 Superfamily Cardioidea ............................146 Superfamily Onchidioidea ........................135 Family Cardiidae ....................................146 Family Onchidiidae ................................135 Superfamily Veneroidea ............................147
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