. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Fig. 4. Phoradiadius divortiensis. A, No. , type, right M2'8. B, No. 7407, right M3. X2. The slightly crescentic protocone is connected by a basal ridge to the protoconule but separated by a shallow apical notch. There is a deeper separation between the protoconule and the paracone. There is a simple and shallow central fossa between the proto- cone and the ectoloph. The prominent metaconule projects for- ward into this fossa, resembling a small crista. Protocone and hypocone are united basally a
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Fig. 4. Phoradiadius divortiensis. A, No. , type, right M2'8. B, No. 7407, right M3. X2. The slightly crescentic protocone is connected by a basal ridge to the protoconule but separated by a shallow apical notch. There is a deeper separation between the protoconule and the paracone. There is a simple and shallow central fossa between the proto- cone and the ectoloph. The prominent metaconule projects for- ward into this fossa, resembling a small crista. Protocone and hypocone are united basally and slightly separated apically as are protocone and protoconule. The hypocone also seems to be united, at least basally, with the metaconule. On the postero- lingual part of the tooth there is a small but deep and prominent fossa bounded anterolingually by the hypocone. anterolabially by the metaconule, and posteriorly by a strong crest curving first posteriorly from the hypocone apex and then turning labially along the posterior margin of the tooth. M3 is as large as M2, not reduced, but with the lingual contour more rounded and the hypocone considerably smaller, relatively, than on 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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