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Part II - State of New Jersey

Part II - State of New Jersey

Part II - State of New Jersey

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CRETACEOUS FOSSILSplications opposite the middle <strong>of</strong> the aperture; surface <strong>of</strong> the volutionsmarked by strong, rounded, vertical plications or folds, ~vhich becomeobsolete a little below the periphery and are also less distinct upon theouter half <strong>of</strong> the last volution. About 11 <strong>of</strong> these folds are presentupon the outer volution <strong>of</strong> an average example. A plaster c;~st <strong>of</strong> theupper half <strong>of</strong> a shell from a natural mould has about five rol~~tions, thespire is conical and turreted with an apical angle <strong>of</strong> about 75"; sutnrc~vell defined; thc solutions <strong>of</strong> the spire strongly angular a little belowt,he middle <strong>of</strong> t,he distance between the sutures, the npper surface flattenedor slightly concave, the angle marked xith strong nodes, <strong>of</strong> whichthere are about 1.2 on each rolution. ljpper surface <strong>of</strong> the hod? ~olntionnearly flat, sloping do\vnlvard from the suture to the angular peripherv,which is marked by strong nodes similar to those <strong>of</strong> the npper volnt ions ;below the peripl11:t-y t,hc surface is gently conyes as far as the specimencontinues. Surface nlarked by finc revolving costae, and by lines <strong>of</strong>gro~vtll ~~~llich, just bclolv the sntore, are ;IS strong or stronger than t.1~rerolving costae. The dircclio~l <strong>of</strong> the lincs <strong>of</strong> growth indicate t,hat theouter lip <strong>of</strong> the aperture was broadly sinuat,~ in its upper part."(TTTeller)Remnr1cs.-The external characteristics <strong>of</strong> the species are less wellknown thau the internal features.Rairge in iVet11 <strong>Jersey</strong>-TVENONAEI : 34, 35MT. LAUREL-NAVESINK: 3i. -10,47, 53Range o~~tside Ne~u .Iersey-Alabama.,.1ypc.-Prairie13111lF, :\':I:I;I!<strong>II</strong>~; ;\XSl',Turbinella parva Gabb 1860Tli,rbinel/u. pcrroa Gahb, 1860, Proc. Acad. Nat. Sci. I'hil. (1860), p. 94,pl. 2, fig. 3.Tti.rbi?~ella ? paruu TVl~itfiel~l~ 1592, p. 80, 111. 9, figs. 4-G.T?rrbivrella puma \T1eller: 1907, p. 770, p1. 90: figs. 23-22.Ileseriptio?z.-" S111:ll small, subturbin;~tc in form, the greatest diameterbeing near Lhe top <strong>of</strong> the volution, rapiilly narro~ving helo~v:spire depressed, but not quite flat; the dimensions <strong>of</strong> an incomplt:te internalcast are: height, 11.5 mm., but if the spire mere complete anteriorlyit ~1.ould prol~;~hly be 13 nun. or 14 nlm.; m;lsimum diameter, 11mm. T701utions ahont t,l~ree in number, flattened above, rouncled on theperiphery; aperture large, oblique, higher than wide; colnmellar cavityin the casts broad, mnrkcd 11y three distinct plications or folds, the twoupper ones a little al~ore the lotver third <strong>of</strong> the aperture, equal instrength and ne;lr together: the lo\rest one larger and more distant,, bntNEW JERSEY GEOLOGICAL SURVEY

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