. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 484 ANNUAL EEPORT SMITHSONIAN INSTITUTION, 1907. The Ca3nozoic falls into the following subdivisions: II. Quaternary j^] Qiadal epoch. '4. Pliocene.—Example: The upper light sea sands of Antwerp (whalebone whales, walruses, seals). The marine formations of the upper Italian low- and (whalebone whales, toothed whales, sea- cows). 2Iioccne.—Example: The lower black sea sands of Antwerp (whalebone whales, toothed whales, and seals). Marine dep
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 484 ANNUAL EEPORT SMITHSONIAN INSTITUTION, 1907. The Ca3nozoic falls into the following subdivisions: II. Quaternary j^] Qiadal epoch. '4. Pliocene.—Example: The upper light sea sands of Antwerp (whalebone whales, walruses, seals). The marine formations of the upper Italian low- and (whalebone whales, toothed whales, sea- cows). 2Iioccne.—Example: The lower black sea sands of Antwerp (whalebone whales, toothed whales, and seals). Marine deposits of the outer border of the Alps (sea-cows and whales). Clays of Nussdorf and Heiligenstadt, Vienna (whales and seals). Oligocene.—Example: The sea sands of the vicinity of Mayence (sea-cows). Eocene.—Example: The marine chalk of the Mokat- tamberg near Cairo, and of the Fayum (primitive cetaceans and the first sea-cows). The different divisions, as for example the Eocene, Oligocene, etc., are again subdivided into Lower Eocene, Middle Eocene, Upper Eocene, etc. Fig. 11a. I. Tertiary__-. FiG. 12. Fig. 11b. Figs. 11 and 12.—Skulls of two primitive cetaceans from the lower Middle Eocene of Egypt. Fig. 11. Protocetus ataviis E. Fraas. Length of skull 60 cm. ( in.) ; 11a, obliquely from above ; lib, from below. Fig. 12. Bocetus schweinfurthi E. Fraas. Length of skull 90 cm. ( in.). Right side. After E. Fraas. While only land mammals have thus far been found in the Lower Eocene, the first marine mammals appear in the lower Middle Eocene—primitive cetaceans and the oldest sea-cows. These discov- eries were made during the last five years in a region from which pre-. 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 Smithsonian Institution. Board of Regents; United States National Museum. Rep
Size: 2010px × 1243px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840
