Part II - State of New Jersey

CRUSTBCEA 185Re111nr1;s.-The specimen showw on TTTeller's (190i) plate 111, fig.17 (NJShf 7788) and rcfignred by Rathbun (1935: pl. 10, fig. 16) is thebest preserved of the three synt,ypes. It shows the follo~ring smalltnl~ercles: one above each orhit, a submedian pair behind the rostrum,an eqnilateral triangle of t,hree pointing postad on the cardiac fieldnrid scattered granules on t,he summits of the hepatic, protogastric andmetagastric areas.I~arge specimens of this species attain a cnrapaeal ~vidth of 32 rnm.They are proportionately shorter and wider than are specimens thesize of the syntypes. Their angles are more broadly rounded, and t,hegranulations on the elevated areas of the carapace coarser and dcnser.\IThen molds and fillings of these large specimens are too sliallow to showthe true periphery of the carapace, thcir dorsal profile ;~pproi~ebrsroundness and the disJanee between the apparent posterior margill ofthe carapace and the origin of the brarichial groove is shortcne(1. Suchspecimens have a superficial resemblance to Dakoticancer ouerrrna R;~thbun(1917, p. 386, pl. 32; pl. 33, figs. 6-14). In fact, the New Jerseyrecord (Rat,hhun, 1935, p. 40) of the latter is based on a nniqne esternrilmold (N.TSM 9549) of T. szcbqxadvatns Wcller showing tllc featuresmentioned above.The thoracic sterna of D. ovcrana and T. stabquadratus are quitesimilar. However, D. overana has a conspicuous triangular tooth ateach distal angle of sternite IX, whereas sternite IX of 7'. stabquatratusis unarmed.The sternum and palm (NJSII 10215) tv.0 specimens reported as T.s~abquaciratus by Rathbun (1935, p. 41 ; palm, 111. 10, fig. 18) and saidto have come from the Tinton formation at Beers Hill, New Jersey, arespecifically un(1eterminablc. Tl~cir matrices appear to have been derivedfrom nodules similar to those in the \IToodbury and Cliffmoo(1clays.Distribution in New Jersey.-Magothy formation: Cliffwood; Cliff-\x700(l Point near hfatawan. Woodbury formation: Lorillaril.Outside dktributi0.n.-Jvyoming : "Lewis Shale."Syntypcs.-NJSM 7788 (Cliffwood Point), 9532 (T~orillard).Tribe GYMNOPLEURA BourneFamily Raninellidae BeurlenGenus Notopocorystos M'Coy, 1849Subgenus Cretacoranina Mertin, 1941Notopocorystes (Cretacoranina) testacea (Rathbun)Plate 85, Figures 9, 10Raqtinella testacea Rathbnn: 1926, p. 190, pl. 68, figs. 1-4.Notopocorystes (Cretacoranina) testacea, Mertin, 1941, p. 239.NEW JERSEY GEOLOGICAL SURVEY