Albertosaurus sarcophagus
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BibTeX: @article{Osborn1905BulletinoftheAmericanMuseumofNaturalHistory21, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Osborn1905Bulletin of the American Museum of Natural History21">{{Citation |
Ordo: Avetheropoda
Familia: Tyrannosauridae
Genus: Albertosaurus
Name
Albertosaurus sarcophagus Osborn, H. F., 1905 – Wikispecies link – Pensoft Profile
- Albertosaurus sarcophagus Osborn, H. F., 1905, Bulletin of the American Museum of Natural History 21: 264-265.
Materials Examined
Canada Knee Hills Creek of the Red Deer River
Description
The generic name is assigned in reference to the Province of Alberta, Dominion of Canada, in which these types were found. This animal is more specialized than Deinodon in the reduction of the truncated anterior teeth, and more primitive than Dynamosaurus in the presence of a larger number of teeth and in the less specialized form of the teeth. Generic characters.— Reduced alveolar partitions between the mandibular teeth;... principal alveolar grooves apparently formed on the inner surface of the outer dentary wall with little or no development of grooves on the alveolar plate (Lambe, op. tit., p. 16).” The mandibular ramus is devoid of the triangular osseous plates between the teeth. The anterior truncate teeth are reduced to a single small pair. Specific characters.— - Fifteen mandibular teeth, including one small anterior tooth truncated posteriorly. Some of the other characters given in Lambe’s very full and clear descriptions are ds follows: Skull with two preorbital openings; lower jaw with a distinct presplenial. Metatarsal of cotype long and slender. The teeth are laterally compressed, lenticular in section, in the upper portion of a more rounded oval form, nearer the bases recurved, serrate on both borders. These teeth are thus apparently intermediate in number and structure between those of Dynamosaurus and Deinodon. Lambe determines fifteen mandibular teeth, fourteen of full size, one, the anterior tooth, of smaller size, not successional, truncated posteriorly, as in Deinodon. He determines twelve maxillary teeth and presumes there were three in the premaxillaries. This review relates only to the large carnivorous dinosaurs and omits reference to the Omithomimidae.
Taxon Treatment
- Osborn, H. F.; 1905: Tyrannosaurus and other Cretaceous carnivorous dinosaurs, Bulletin of the American Museum of Natural History 21: 264-265. doi
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