. Bulletin - United States National Museum. Science. 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 Figure 2i.—Aphro7iorusfraudator Simpson, no. 9560, with tooth in outline added from no. 9565, left upper jaw: a. External view; 6, crown view. Four times natural size. nid. Anterior to this there is a sharp internal cingulum, turning into a vertical crest at the anterior midline of the tooth, but there is usually no paraconid or an
. Bulletin - United States National Museum. Science. 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 Figure 2i.—Aphro7iorusfraudator Simpson, no. 9560, with tooth in outline added from no. 9565, left upper jaw: a. External view; 6, crown view. Four times natural size. nid. Anterior to this there is a sharp internal cingulum, turning into a vertical crest at the anterior midline of the tooth, but there is usually no paraconid or anterior cuspule, although in one or two specmiens there is a slight tendency to develop a cuspule here. The large heel has its main cusp external to the midline, connected by a sharp crest to the middle of the trigonid base. Internal to this crest is a basin, and a second, smaller and less distinct cusp is near the posterointernal corner of the 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
