. Bulletin - United States National Museum. Science. FORT UNION OF CRAZY MOUNTAIN FIELD, MONT. 125 root. P2 is likewise small but more elongate and with two roots. The only specimen that shows Pi_2 is senile and these teeth are truncated by wear at the bases of the crowns. P3 is larger than P2 but also small in relation to the whole dentition. When unworn it has a triangular protoconid followed by a heel with a slight interna"! basin and two rudimentary posterior cusps. P4 is much enlarged and has a massive protoconid, which slopes backward, and a lower distinct metaconid, closely applied
. Bulletin - United States National Museum. Science. FORT UNION OF CRAZY MOUNTAIN FIELD, MONT. 125 root. P2 is likewise small but more elongate and with two roots. The only specimen that shows Pi_2 is senile and these teeth are truncated by wear at the bases of the crowns. P3 is larger than P2 but also small in relation to the whole dentition. When unworn it has a triangular protoconid followed by a heel with a slight interna"! basin and two rudimentary posterior cusps. P4 is much enlarged and has a massive protoconid, which slopes backward, and a lower distinct metaconid, closely applied to the posterointernal base of the protoco-. FiGURE 23.—AphronormfraudatoT Simpson, no. 9448, with parts in outline added from DOS. 9291 and 9519, right lower jaw: a, Crown view; 6, internal view. Four times natural 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
