CEPHALOPODA— AMMONOIDEA. 2 1 1 



CLXIL TuRRiLiTES Lamarck. 



High-spired cones (turriliticones) with more or less angulated 

 volutions, in contact throughout or with only slight loose coiling 

 in old age ; costae and two rows of tubercles on each side of median 

 line of whorls; the costse often obsolete in old age and only three 

 rows of nodes. Comanchic-Cretacic. 



365. T. brazoensis Roemer. (Fig. 1483.) Comanchic. 

 Costse weak; nodes strong, whorls with two revolving noded 



angulations, with flat interspaces. 

 Washita of Texas, etc. 



366. T. carlottensis Whiteaves. Comanchic. 

 Large, narrowly elongate, usually sinistral, with widely sepa- 



FiG. 1484. Turrilites pauper y lateral and summit view of a fragment. (After Whit- 

 field, Pal. N. J., II.) 



rated volutions, slightly compressed, of broadly subovate or almost 

 circular section ; ribs small, close set, numerous ; tubercles at more 

 or less distant intervals. 



Queen Charlotte formation of Queen Charlotte Islands. 



367. T. pauper Whitfield. (Figs. 1484, 1485.) Cretacic. 



Fig. 1485. Turrilites pauper, septum, X 2. (After Whitfield, Pal. N. J., II.) 



Similar to preceding, but costse strong and sharp, and nodes 

 small or nearly obsolete. 

 Ripleyan of New Jersey. 



