. Bulletin - American Museum of Natural History. Natural history; Science. Fig. \.—Protohippusperditus Leidy. Hypotype. No. 1083S. Crown and sectional views of first true molar, natural size. dont in form and heavily cement covered, though much shorter- crowned and proportionally narrower transversel}^ than the teeth of the permanent series which succeed them. The transversely narrow dp' dp. Fig. 5.—Protohippus per dit us Leidy. Upper jaw, half natural size. Hypotype, No. 10838. proportions of the milk teeth, however, are characteristic of all horses. Compared with Neohipparion whitneyi the sk
. Bulletin - American Museum of Natural History. Natural history; Science. Fig. \.—Protohippusperditus Leidy. Hypotype. No. 1083S. Crown and sectional views of first true molar, natural size. dont in form and heavily cement covered, though much shorter- crowned and proportionally narrower transversel}^ than the teeth of the permanent series which succeed them. The transversely narrow dp' dp. Fig. 5.—Protohippus per dit us Leidy. Upper jaw, half natural size. Hypotype, No. 10838. proportions of the milk teeth, however, are characteristic of all horses. Compared with Neohipparion whitneyi the skull is proportionally shorter, especially in the region of the muzzle, and relatively less in vertical depth. The palate is moderately arched, being especially high forward of the premolars, a character observed in all the zebra skulls compared, and the maxillaries are deeply constricted in this region. The anterior palatal foramina are small, oval in 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 American Museum of Natural History; Allen, J. A. (Joel Asaph), 1838-1921. New York [American Museum of Natural History]
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