Part II - State of New Jersey

Range in Xew Jersey-SAVESIXR: Xavesink Mills. The tlonl~tfnl sl)ecimens arefrom lower levels, the &I:\RS'IATJ~O\VX formation near S\\7edesboroand the TVEXONAH sand near Jfarlboro.l'ype.-NJS&r7659, Xtrvesink IIills.Nostoceras spI'late 69: Figures i-12Ifeferoccras conrarli (Alorton) (part). T\Tl~itfield, 1892, p. 269, 111. 43,figs, 12-13 (not figs. 9-11, 14).Ileteroceras conradi (Norton) (part). J\'eller, 190i, p. 833, pl. 108,figs. 5-8.A retrorcrsttl living chamber illnstratecl lby JVhitfielcl and two illustratedby TVeller, together with three in the lJ. S. National 3fuseun1secm all to represent a species of Nostoceras. The speci~ilens incl~ideboth [lcstral and sinistral spc:ein~ens, and eziell is a nearly co~nplctcliving chamber, from the last septum to the aperture. No directly associatedcoile(1 parts are reported. Each specimen forms a distinct TJ,with rnore or less parallel sidcs connected by an arc, differing in thisrespect fron~ the more or less continuously curved living chamber reportedfor lIirl.jn~occras.On these specimens the ribs arc strong and widely spaced and tworows of ventral nodes are pronlinently developed, largest on the enrvedpart of the specimen. The cross section is snbeireular to very 11ro;idlyovate.Range in New Jersey-All the specimens are attributed to the Navesink niarl in the XaresinkRills.Cirrocoras Conrad, 1865Genotype: Antmoneeratites conradi Morton, IS41Cirroceras Conrad: Synopsis of tl~l: i~irertel~ratr fossils of tl~c Cretaceousformation of New Jersey, in Coolr, G. II., 1868, Geology ofNew Jersey: New Jersey Geol. Survey Rcpt., App. A,, p. 730.The genus ma defined only by the citation of the genotype descriptionand figure. The most distinetire fealnre of the type specimcll ist,l~at it formed part of an open spire like that of Did,ynocerns and EIILpcrocerasIIyatt, 1894. Witli tlic specinlens now arailal~le, it is difficultto select cllaraclers tliat woiild separate Cirrocwas from those genela,and it seems better for the present to recognize all three genera. Cirrocerasseems to have been overlooked or ignored by most writers after1868, but at lcast legally it is as well fountlerl as many accepte(1 genera.NEW JERSEY GEOLOGICAL SURVEY