Part II - State of New Jersey

64 CR,ETACEODS FOSSILSRange in New Jersey-NAVESINK : 4 iType.-Ifissing.Pyropsis trochiformir (Tuomey) 1654Plate 54, Figure 12; Plate 56, Figure 3; Plate 90, Fignres 6, 6Pyrz~la tvochifor~llis Tuomey, 1654, Proc. Acail. Nat. Sci. Phila., T'ol. 7,p. 169.Pyropsis Riclrardso?~i ? Whitfield, 1892, p. 89, pl. 1, figs. 14-16 (notP. Riekorrlsoni Tuomey).Pyropsis trochifori~lis ? Whitfield, 1692, p. 41, pl. 1, figs. 4-7.Pyropsis veilcyi Whitfielcl, 1692> p. 42, p1. 2, figs. 11-16> 18-20 (not P.reileyi \IThitfield).Pyropsis trockiformis JVeller, 1907, p. 746, (part) pl. 87, figs. 4-11 (not1-3=P. reileyi IVhitfield).Pyropsis trochifornlis Gardner, 1916, p. 446, pl. 16, figs. 1-2.Descriptio?~.-"The dilncnsious of an incomplete internal cast are:height, as far as preser~~ed, 40 mm.; probable total height, about 60mm.; maximum diameter, 41 mm. Shcll pyriform, ~vith three or fourrapidly increasing volutions, spire depressed, the first volution and onehalfalmost flat in the casts, suture in the cast ~videly open. Body volotionvery broad and gibbous, contracting somewhat rapidly bclolv to theanterior canal, which has been broken and destroyed in most of thespecimens observed. Surfacc of the outer volntion rounded fro111 thesuture to the base of the anterior canal, that portion above the line ofgreatest width shorter and more strongly convex than that below. Surfaceof the casts smooth, but sometimcs with slight indications of thcrevolving costae of the exterior. Columellar cavity large in the casts.External surface of the shell marked hj- strong, more or less nodose,revolving costae, and by somewhat irregular lines of growth, the revolvinglines becoming grarlually morc slender towards the base."(Weller)Remarks.-"Pyropsis trochifov~~lis, as used by Weller and otherswho were working with poorly preserved material, is little more than agroup name xvhich serres to include all of the larger casts of P,yvopsiswith rounded but not globose body whorls. The degree of variation inthe convexity and in the sharpness of the contraction of the body isquite certainly much greater than would be allowed if the shell characterswere preserved, but in the absence of these there are not verysatisfactory criteria for separation." (Gardner)Several of the specimens figured by \\'hitfield as P. reileyi Whitfieldshou:d he referred to P. trochiforr~tis.NEW JERSEY GEOLOGICAL SURVEY