Definitions

morphogeny

Protostega

Protostega gigas ('first roof' - 'giant') is an extinct species of marine turtle. It was first collected from the Smoky Hill Chalk of western Kansas in 1871, and named by E.D. Cope (1872). With a length of 3 m (10 ft), it is the second-largest turtle that ever lived, second only to the giant Archelon.

Like the modern leatherback sea turtle, the largest living turtle at 2,70 m (9 ft) long, Protostega's carapace lacked scutes, making it weaker but also lighter. Protostega probably fed on slow ocean creatures such as jellyfish and shellfish.

Bibliography

  • Case, E. C. "On the osteology and relationships of Protostega". Journal of Morphology 14 21–60.
  • Cope, E. D. 1872. Sketch of an expedition in the valley of the Smoky Hill River in Kansas Proceedings of the American Philosophical Society 12(87):174-176. (meeting of October 20, 1871)
  • Cope, Edward Drinker "A description of the genus Protostega". Proceedings of the Academy of Natural Sciences of Philadelphia 422–433.
  • Cope, Edward Drinker "Note of fossils obtained by Mr. Russell S. Hill, including bones of Protostega gigas". The American Naturalist 12 137.
  • Hay, O.P. "On certain portions of the skeleton of Protostega gigas". Field Columbian Museum, Publications, Zoological Series 1 57–62.
  • Hay, O.P. "On Protostega, the systematic position of Dermochelys, and the morphogeny of the chelonian carapace and plastron". The American Naturalist 32 929–948.
  • Shimada, Kenshu; M.J. Everhart, G. E. Hooks III "Ichthyodectid fish and protostegid turtle bitten by the Late Cretaceous lamniform shark, Cretoxyrhina mantelli". Journal of Vertebrate Paleontology 22 (3): 106.
  • Sternberg, C. H. 1899. The first great roof Popular Science News 33:126-127, 1 fig.
  • Sternberg, C.H. "Protostega gigas and other Cretaceous reptiles and fishes from the Kansas chalk". Transactions of the Kansas Academy of Science 19 123–128.
  • Wieland, G. R. "The protostegan plastron". American Journal of Science 5 15–20.
  • Wieland, G. R. "The osteology of Protostega". Carnegie Museum, Memoirs 2 279–298.
  • Wieland, G. R. "Plastron of the Protosteginae". Carnegie Museum, Annals 4 8–14.
  • Wieland, G. R. "Revision of the Ptotostegidae". American Journal of Science 27 101–130.
  • Williston, S. W. "On the hind limb of Protostega". American Journal of Science 13 276–278.
  • Zangerl, Rainer "The vertebrate fauna of the Selma Formation of Alabama, Part III. The turtles of the Family Protostegidae". Chicago Field Museum Mem. 3 (3):
  • Oceans of Kansas - Marine Turtles

References

External links

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