Part II - State of New Jersey

102 C1t.ErETACEVVS FOSSILSHyatt, then described some specimens from " Dakotah, Cretaceous:"11nt dicl not mcntion any from Xc\v dersey, h he nee cilme the type nlaterialof E. rlekwi. Accordingly tllere has al\~.tlys been an open questiollas to whether the genotype is E. deka:ui or a possibly (lifferent speciesmhich ocenrs in the Upper Cretaceous of the JVcstern Interior. \TTehavc n~adc direct comparisons of many specimel~s from South Dakotaand other western states with a number of Xew .Jersey in~liriduals(inelading the holotype), and IVC are convinced that the species andthe genus in qllestion occur ill both of these regions. It tl~creforcseems to us that there is no good reason why Hyatt's designation nf tlret,ypc species should not be interpreted literally.In view of the fact that the Eutrcpl~oceratidac~ as me u~~~lcrsta!iiI it,>contains only a single genus, the n~orpl~ologici~l characters of that genusare those of the family: outlined in preceding paragraphs. This st;~tc-~nent of course applies equally ~rell to thc geologic and geographic tlistribl~tion.Eutrephoceras dekayi (Morton)I'late 65, Figures 1-6; Plate 66> Figures 1, 2; Plate 67, Figures 1-9Satrfil?rs Dckayi Morton, 1833, Am. Jonr. Sci. and ~\~.ts? vol. 23, p. 291.111. 8: fig. 4.Satrtilzis Deka~ji Morton, 1834, Synopsis organic remains Cretaceousgroup of U. S. . . . ., p. 33, pl. 8, fig. 4 ; pl. 13? fig. 4.Snzifilns perlatns aiorton, 1834, Synopsis organic senlains Cretaccoi~sgroup of U. S. . . . ., p. 33, pl. 13, fig. 47.Nm~cti'us Dekayi (part) dlOrhigny, 1850, Prolir. I'tlliiol~t, stratigr.univ. ...., t. 2, p. "1.~Vantilus Dekayi Hall and Meek, 1856, Am. Scad. Arts and Sei., IZcm.,n. scr., vol. 5, pp. 405, 406..?:autilus Dekuyi 3leek and IIaydcn, 1856, Pl~ilailelplria Bcad. Sat,. Sci.,Pr., vol. 8, pp. 267, 280.l\l(itr.tilt~s De Iiayi %iallet and 'Puomeyl 1858, Second hien. rept. on geol.Alabama, Append. 3, 11. 259.ATnntilzrs l)ekn?,i Xceli: 1850> Xostl~-west 'I'err.: Rellts. Prog. . . . . Assinil~oineand SS;~sIiatchc~van Erpl. Exp~:ii. . . . . (I~Iind): p, 185, pl.2, tigs. 9, 10. (Also an edition in Fronch ; one in Canada, LegislativeAssembly, Jours., vol. 17, i~lipt:nd. 36; and another, IiritishNorth iimerica; Hf!pts. . . . . Espell. (Great 13ritai11, I'arliament. . . . , 1860).A'uzctilz~s Dckayi Conrad, 1860, I'hiladelphia ~\ca(l. Natnr. Sci., Jour.,ser. 2, vol. 4, p. 276.Nautilus Dekayi Gahb, 1861, Am. Philos. Soc., Pr.: vol. 8, pp. 86: 87.A'autilz~s Deliayi Meek, 1864, Smithsonian Miscel. Col., vol. 7, no. 177,p. 25.NEW JERSEY GEOLOGICAL SURVEY