. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. black: north American tertiary sciuridae 173 The first molars are rather square with a greater length in pro- portion to their width than is the case for the second molars which are more greatly compressed anteroposteriorly. Except for these differences in shape, the first and second lower molars are identical. The anterior cingulum bears little trace of an antero- conid. The trigonid basin is usually open into and not much higher than the talonid basin. The ectolophid is set well back and the mesoconid is either abse
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. black: north American tertiary sciuridae 173 The first molars are rather square with a greater length in pro- portion to their width than is the case for the second molars which are more greatly compressed anteroposteriorly. Except for these differences in shape, the first and second lower molars are identical. The anterior cingulum bears little trace of an antero- conid. The trigonid basin is usually open into and not much higher than the talonid basin. The ectolophid is set well back and the mesoconid is either absent or small. The posterolophid is. 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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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
