. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. EASTMAN: CARBONIFEROUS SHARKS. 75 with increase in the number of segments. A divergent series, how- ever, is represented by the species of Edestus, in which the relatively few segments are not very intimately fused, while their coronal por- tions become reduced pari passu with the enormous development of the base. In fact, about all the remains of the crown in Edestus is the. Fig. 6. Cross-sections of symphysial teeth of Edestus. A, Type of E. heinrichi N. & W. X \- B, Type of E. vorax Leidy (after Leidy)
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. EASTMAN: CARBONIFEROUS SHARKS. 75 with increase in the number of segments. A divergent series, how- ever, is represented by the species of Edestus, in which the relatively few segments are not very intimately fused, while their coronal por- tions become reduced pari passu with the enormous development of the base. In fact, about all the remains of the crown in Edestus is the. Fig. 6. Cross-sections of symphysial teeth of Edestus. A, Type of E. heinrichi N. & W. X \- B, Type of E. vorax Leidy (after Leidy). X f. C, Type of E. giganteus Newb., taken vertically through the penultimate tooth of the series. X ^. apical portion, the two processes corresponding to the buttressed lateral faces of Campodus appearing as slender prolongations (cf. text-fig. 7). The relative compression amongst these various forms is apparent from their cross-sections, of which figures are given herewith. It will be. 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: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
