The crinoid Melocrinites tempestus in the Devonian Campwyn Beds on the shore of Repulse Bay, south of Proserpine

1 Pages·1999·0.31 MB·

by  Peter A Jell

352 MEMOIRS OF THE QUEENSLAND MUSEUM
THECRINOIDMELOCRINITESTEMPESTVSINTHE
DEVONIAN CAMPWYN BEDS ON THE SHORE OF
REPULSE BAY,SOITHOFPROSERPINE.Memoirs-of
teenslandMuseum 43: 352, 1999:- Alongthe western
shoresofRepulseBay,justsouthofProserpine.(lieCampwyn
Volcanies (Fergusson et al.. 1994) extend from around
Seaforth inthesouthtonearLethebrook inthenorth (Paine.
1972). AboutmidwaybetweenMidgetonandLethebrook- in
the vicinity ofthe Laguna Quays Resort (termed Aqua del
Rev in Fergusson et al., 1994). the Campwyn Volcanies
outcrop in a broad intertidal band more than 100m wide.
Slrike is virtually parallel to the waterline and dip is to the
west at very low angles. Muddy voleanoclastic limestones
predominate with the percentage bioelasts highly variable
betweenbeds.Inafewofthesebedscrinoidalandothershelly
(includingcoralandbraehiopod)debris iscommon; sections
of stem up to 100mm long and 10mm in diameter are
common. Cup and arm plates are rare. In 1991 Mr Bob
Spencer forwarded the crinoid calyx figured herein to the
Queensland Museumafterhavingcollecteditintheintertidal
area now disturbed by excavations for the Laguna Quays
Resort; he also sent a badly weathered specimen ofa large
pleurotomariacean gastropod and a solitary rugose coral.
Subsequent collection by the author has confirmed the
provenance but failed to discover any further identifiable
erinoids.
This crinoid (Queensland Museum Fossil 40967). with a
high conical, smooth cup. 52mm long, isidentifiedasavery
large specimen ofMelocrimtes tempestus Jell et al.. 1988.
Iliis assignment is based on the shape, arrangement and
ornamentofcupplatesandcupshape. Thespecimensfigured
byJelletal.(1988)aremostlyweatheredsmoothhutone(Jell
et al.. 1988. fig, 13G) shows the comers of cup plates
depressed indicating that the unwealhered cup had strongly
conTvheex palgaeteosfasthien tChaemCpawmypnwyVnolcVaonliceasniehsasspbeeceinmegni.ven as FIQG.MF140Me9h6t7c,rini1t,e5stempestusJell etal.. 1988. lateral view ofcup
Upper Devonian based on corals determined by Hill from
nearSeaforth(Jensenetal.. 1966: McKellarinRoberts et al.. Literature cited
t1h9e71M)aacnkdayLoswheeret,CadrebtoenrimfienreoudsbbyasMecdKeonllbarrac(hJieonpsoednseftroalm.. FERGUSSciOeNa iCn Ia DHeKvoNnDiEaRnS-*i'>a\r.boRn.i.Afer&ouWsRvIoGlHcTan,icJ.fVoreI--ar\e
1966). IntheProserpinesheetareatheagehasbeengivenas succession. Campwyn Volcanies, Mackay district central
oUnppceornDodeovnotnsiainnbsaasmepdloensthferoSemaftohrethLcaogruanlsa(QPauianye,s1l9o7c2al)iotyr JELL.PQfAur.eoem&n,tshJleEaUnLpdLp,eA.urIsSt.Dre1av9loi9na9inaJCnonunrroenieafdlsco,ofmaEpaMlraetsxhtoSoicfditeahnnecdeCsaa4nc1nyic;nl2og8c7yB-sa3ts0oi0in.d,
(Fergussonetal.. 1994,fig.3b).However,thecrinoidspecies Western Australia Memoirs oftheQueensland Museum 43:
determined herein has previously only been found in the 201-236
MiddleDevonian(Givetian)partofthe Papilio Formationof JELL. PA. JELL. .IS.. JOHNSON. B.D.. WAWSON, R. &.
the Broken River Province. Melocriniies iswidely recorded TALENT, J.A 1988. Crinoids from Devonian Limestonesof
fromtheSiluriantoFrasnianintheNorthernHemisphereand eastern Australia Memoirs ofthe Queensland Museum 25:
YABouasrstkir.nalrTiehaeefbcouontmlypislAeouxnslt(yrJaerllleica&onrJFdelrelad,sn1f9ir9ao9nm).rteShcieonrFcdeaimtseheinnncttohanenodCoiannntnNiaengwge JENSENo3M,5fi5ntA-eh.4reR0a.2lM,.aRGecsRkoaEuyrGcOe1sR:.Y2G5,0e0oC0l0Mog,syh&eaentdFOaGrReeoBap,EhSQy.useieVcnssRlR.aenp1od9r.6t6.B1uG0re4eoTal-uo5g8oyf
scperurigsng.oeiesdtoaelmdmi.fnodri1c9at9ht9ii)sont.lhoecTraehliiatspypseiisanrgFslaetmoecbnreninisoaoindme(cRco.ounAlf.dliHcbteenwdiaetrhlsotonhnge RPOABIENRET,GSe.oA"l..oG!g.i.Lc.alJ1S9Oe7Nr2i.EeSsP,-roEPsxepJrl.painnaTetEoLrQLyld,.NoJtS.ehSs.e,e(tiJncESlFNuKd5iI5nN-g4Sm.a1pT2.)52B04.p0H.0.0.
ranging species providing a second Famennian occurrence MARSDEN. M.A.l-L.McKELLAR,R.G..McKELVEY.B.C
forthe genus or far less likely the section at Laguna Quays & SEDDON, G. Ic'71 Correlation ofthe Upper Devonian
could represent a longer period of time than previously rocks of Australia. Journal of the Geological Societv of
Australia 18(4) 467-490
thought.
Peter A. .Jell, Queensland Museum, P.O. Box 3300, South
Brisbane 4}OfAustralia: 26May 1999.