. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 1 MM Figure 5. Lower left medial incisors of carpolestids. A) Elphidotarsius, cf. E. florencae, PL) 14282. B) ICar- podaptes sp., UW 6530 (reversed). C) Carpolestes dubius, PU 14235. vide new information about Elphidotarsius. A few reveal the anterior part of the man- dible and suggest the dental formula The Torrejonian plesiadapid Prono- thodectes, which is close to Elphidotarsius in many features (see below), has a similar dental pattern and the formula (, PU 14783; Szalay, 1972b; Gingerich, pe
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 1 MM Figure 5. Lower left medial incisors of carpolestids. A) Elphidotarsius, cf. E. florencae, PL) 14282. B) ICar- podaptes sp., UW 6530 (reversed). C) Carpolestes dubius, PU 14235. vide new information about Elphidotarsius. A few reveal the anterior part of the man- dible and suggest the dental formula The Torrejonian plesiadapid Prono- thodectes, which is close to Elphidotarsius in many features (see below), has a similar dental pattern and the formula (, PU 14783; Szalay, 1972b; Gingerich, personal communication). Analogy with Pronothodectes strengthens the interpreta- tion of the lower dental formula of Elphi- dotarsius adopted here. The enlarged medial incisor is preserved in one specimen, PU 14282 (Figs. 5A and 6). It is lanceolate in outline and quite broad at the base, much broader than in either of the other carpolestid genera. The dorsal (lingual) surface is broad and slightly convex, bounded laterally by a ridge running from the tip to the base of the crown, where it merges with a promi- nent internal cingulum. The incisor, al- though shorter, somewhat resembles that of Plesiolestes. A small basal cusp arising from the internal cingulum is found in Pronothodectes and Plesiadapis, but is con- spicuously absent from the incisor of Elphidotarsius. An interstitial facet is present in PU 14282, but there is no occlusal facet such as observed in Plesia- dapis by Gingerich (in press).. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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