. First[-fourth] annual report of the Geological survey of Texas, 1889[-1892] Edwin T. Dumble, state geologist. Fig. 32. Fig. 33. Metacoceras cavatiformis, n. s. Near Kansas City, Mo. Coll. A. Hyatt and Dr. J. S. Newberry. Figs. 30-33, natural size. The flat sides in M. cavatiformis incline outwards very slightly, the umbil-ical shoulders are rounded, and the abdomen narrower than the is a row of elongated nodes along either edge of the abdomen and thecentral zone of the abdomen is depressed. There,are slight swellings orcrests on either side of the central depressed zone along th
. First[-fourth] annual report of the Geological survey of Texas, 1889[-1892] Edwin T. Dumble, state geologist. Fig. 32. Fig. 33. Metacoceras cavatiformis, n. s. Near Kansas City, Mo. Coll. A. Hyatt and Dr. J. S. Newberry. Figs. 30-33, natural size. The flat sides in M. cavatiformis incline outwards very slightly, the umbil-ical shoulders are rounded, and the abdomen narrower than the is a row of elongated nodes along either edge of the abdomen and thecentral zone of the abdomen is depressed. There,are slight swellings orcrests on either side of the central depressed zone along the abdomen of thecasts examined, but these did not have tubercles. The whorls differ markedly from other species of this genus, and in fact CARBONIFEROUS CEPHALOPODS. 335 it resembles T. cavatum closely in general aspect. It differs from this, how-ever, in the proportionally narrower abdomen, and the umbilical shouldersare also narrower and more abrupt. The great differences are of course inthe absence of abdominal tuoercles and in the sutures, the peculiar broad ab-dominal saddles of T. cavatum being absen
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