Fossil Vertebrates Volume 5

Fossil Vertebrates Volume 5

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ... of teeth which in their mode of implantation in the jaw dilier from those of lizards there is not a single character of importance in which the skull differs from the skulls of Dicynodon described by Owen many years previously. In 1876 Owen briefly described a skull from the same East London locality under the name Oudenodon raniceps. On examining this type of Owen's I discovered teeth exactly like those of Pnlsterodon and the general agreement of the skull is so close as to leave little doubt that Oudmodon raniceps is a synonym of Pristerodon mac/rayi. In 1898 Seeley described a small skull from the same locality as Ou1Ieno(10% (Aulacocephalus) pithecops. The skull agrees so closely when allowance is made for crushing with Pmlvterodon mackayi as to leave in my mind little doubt that this is another specimen of the same species. One species has been described by me under the name Opisthocterwdon agilis which probably belongs to the genus Pristerodon though it is a very distinct species and from a much higher level. Another species which I described as Opisthoctenodon brachyops may prove to belong to the genus Emydopa. Until the crowns of the teeth are known it will be impossible to decide. A small skull from Victoria West though not showing the molars very satisfactorily is in my opinion Pristerodon mackayi. This determination is important as helping to settle the age of the Dromasaurian Galechirus scholtzi which also comes from Victoria West and from the same horizon as the Pristerodon specimen. Victoria West is far removed from any other localities that have yielded fossils and those got there have been so unlike any known from elsewhere that it was difiicult to fix the age. At first I thought the forms might represent more

Product details

  • Paperback | 168 pages
  • 189 x 246 x 9mm | 313g
  • United States
  • English
  • black & white illustrations
  • 1236843444
  • 9781236843449