MESOZOIC TIME — CRETACEOUS. 



841 



Cephalopods of the tribes of Belemnites and Ammonoids are of many 

 species. One of the most common of the Belemnites, common to New Jersey, 



1380 



1382 



1380-1386. 



Lamellibeanchs. — Fig. 1380, Ostrea cong-esta ; 18S1, Ostrea larva ; 1382, Inoceramus dimidius ; 1383, Exogyra 

 costata; 1384, Gryphiea vesicularls ; 1385, G. Pitcheri ; 1386, Inoceramus labiatus (formerly problematicus). 

 Fig. 1380, 1382, Stanton ; 1381, D'Orbigny ; 1383-1385, Meek ; 1386, Roemer. 



1387 



1387-1392. 



1392 a 



1392 6 



LAiTELLiBEANCH. — Fig. 1387, CoralHochama Orcutti (x J). Gastropods. — Fig. 1388, Pyrifusus Newberryi ; 

 13S9, Fasciolarla buccinoides ; 1890, Anchura (Drepanocheilus) Americana ; 1391, Margarita Nebrascensis ; 

 1392 a,b, Bulla speciosa. Fig. 1387, C. A. White ; 1388-1392, Meek. 



Texas, and the Upper Missouri, is represented in Fig. 1393. Fig. 1394 

 represents the Ammonite, Placenticeras placenta of Dekay ; 1394 a, the same 

 in side view ; and 1394 6 shows the flexures in the partition at the sutures ; 



