. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. FUNCTIONAL POSTERIOR Figure 2. Line drawings of M^ ^ UCMP 136091, Batodon tenuis. (A) Crown views; arrows to M=' indicate projecting metacone and metaconule; arrowhead to M^ indicates damaged part of parastylar area. Posterior is to left and anterior is to right. (B) Ungual oblique views; additional large arrow on M^ indicates heavily worn groove between nnetacone and paracone. (C) Labial views; arrowhead indicates damaged parastylar area of M=^. (D) Functionally rotated views. (E) Anterior views; arrowhead indi- cate
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. FUNCTIONAL POSTERIOR Figure 2. Line drawings of M^ ^ UCMP 136091, Batodon tenuis. (A) Crown views; arrows to M=' indicate projecting metacone and metaconule; arrowhead to M^ indicates damaged part of parastylar area. Posterior is to left and anterior is to right. (B) Ungual oblique views; additional large arrow on M^ indicates heavily worn groove between nnetacone and paracone. (C) Labial views; arrowhead indicates damaged parastylar area of M=^. (D) Functionally rotated views. (E) Anterior views; arrowhead indi- cates damaged parastylar region of M=. (F) Posterior views. Abbreviations: me, metacone; pa, paracone; pr, protocone; ac, anterior protocone cingulum (precingulum); pc, posterior protocone cingulum. cones are closely conjoined from their ba- ses to perhaps one half or two thirds of the distance to their apices. Such mor- phology might suggest that little or no shear occurred directly between the para- cone and inetacone. However, in worn specimens, it is evident that the hypoconid of the lower molar scraped a strong groove on the lingual surfaces of those cusps be- fore passing between the internal conule wings and into the deeply excavated trigon basin. A comparably large hypoconid is not evident in Cenozoic genera such as Pa- laeoryctes or Didelphodus, but is approxi-. 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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