. Bulletin - United States National Museum. Science. Figure 66.— dissentaneus Simpson, no. 9425, left lower jaw: a, Crown view; 6, internal view. Four times natural Figure -Litomylus dissentaneus Simpson, no. 9557, with tooth in outline from no. 9580, right M'-^: a, view; 6, crown view. Four times natural size. No upper teeth anterior to P* are known, and P* is represented only by an uncharacteristic fragment. M^~^ have sharp, subequal, nearly conical paracone and metacone. The protocone is likewise sharp and smaller than in the other
. Bulletin - United States National Museum. Science. Figure 66.— dissentaneus Simpson, no. 9425, left lower jaw: a, Crown view; 6, internal view. Four times natural Figure -Litomylus dissentaneus Simpson, no. 9557, with tooth in outline from no. 9580, right M'-^: a, view; 6, crown view. Four times natural size. No upper teeth anterior to P* are known, and P* is represented only by an uncharacteristic fragment. M^~^ have sharp, subequal, nearly conical paracone and metacone. The protocone is likewise sharp and smaller than in the other species of this group. The conules are large and equal. The external cingulum is sharp and even forming equal angulations, rather than distinct cuspules, at the parastylar and meta- stylar corners. There is no mesostyle. The hypocone is larger than in any known contemporaneous species and is quite distinct from the protocone and equally internal, but smaller. M^ is markedly trans- verse and is triangular, not rounded or oval, without a hypocone but with a sharp, distinct metacone. P 3_4 are long, low, narrow, trenchant teeth, unlike any others known in this family. Each has a rudimentary, median, basal paraconid. The talonids are poorly developed in each case and have only a single posteromedian cuspule and a very rudimentary posterointernal Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
