. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 84 bulletin: museum of COMPARiLTIVE ZOOLOGY. This has much the same form as C acutus from the same horizon, being very straight and gradually tapering, only it is about thrice the size of the latter. It exhibits a length of 28 cm., a maximum width of cm. on the lateral faces, and a thickness of over 3 cm. It is too imperfect, however, for closer identification. The type of C. acutus is preserved in the United States National Museum. Formation and Locality, — Keokuk Limestone; Keokuk, Iowa. Ctenacanthus de
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 84 bulletin: museum of COMPARiLTIVE ZOOLOGY. This has much the same form as C acutus from the same horizon, being very straight and gradually tapering, only it is about thrice the size of the latter. It exhibits a length of 28 cm., a maximum width of cm. on the lateral faces, and a thickness of over 3 cm. It is too imperfect, however, for closer identification. The type of C. acutus is preserved in the United States National Museum. Formation and Locality, — Keokuk Limestone; Keokuk, Iowa. Ctenacanthus decussatus, sp. nov. Plate 6, Fig. 2. The specimen shown of the natural size in Plate 6, Figure 2, bears the United States National Museum catalogue number 4846, and was obtained from the Kinderhook limestone at an uncertain locality, but presumably from either Iowa or Illinois. It is preserved for a length of 12 cm., shows the whole of the inserted portion, and sufficient of the. 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
Size: 1729px × 1445px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
