Henry Fairfield Osborn

Name: Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs
Author: Henry Fairfield Osborn

Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

Summary

“Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs”, published in 1905, is a work by Henry Fairfield Osborn. It explores elements such as teeth, Deinodon and Dryptosaurus.

Quotes from Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (Henry Fairfield Osborn)

Henry Fairfield Osborn, Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

“ The specimens upon which the latter genus [Deinodon] is based, consist of fragments of about a dozen teeth, of which three-fourths [types of Deinodon] are nearly identical in form with those of Megalosaurus, while the others [types of Aublysodon] are more or less peculiar. The uniformity in shape of the teeth of Megalosaurus would appear to indicate that the three-fourths of the specimens alluded to, belonged to, at most, another species of the same genus [Deinodon] , while the remaining specimens would typify a distinct genus [Aublysodon] . ”

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Source: Wikisource

Henry Fairfield Osborn, Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

“ This animal is distinguished by the presence of superficial bony dermal plates which extended either along the dorsal or side lines of the body, by the reduction of the number of teeth, by the apparent absence of truncated anterior teeth, by the rounded rather than lenticular form of the teeth, by the presence of a row of triangular upgrowths of the dental alveoli on the inner sides of the jaws. In Deinodon there will probably be found a larger number of teeth, and some of the anterior teeth of the jaw will be found to be truncated and serrate posteriorly as in Allosaurus. ”

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Source: Wikisource

Henry Fairfield Osborn, Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

“ The generic distinctions which are herein indicated by partially studied remains will probably be intensified by future research. Geological, geographical, and morphological considerations render it a priori probable not only that the above genera as well as Deinodon are distinct from Dryptosaurus but that a fifth Cretaceous genus of somewhat more primitive character, which may be called Albertosaurus, is represented in the British Columbia skulls hitherto described as Dryptosaurus. ”

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Source: Wikisource

Henry Fairfield Osborn, Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

“ Jaws.—Between the teeth are a series of triangular osseous plates, which appear to be upward continuations of the alveolar walls which separate at the base from the edge of the dentary.
Albertosaurus sarcophagus gen. et sp. nov.
Type.—A skull in the Ottawa Museum from the Edmonton series, from Knee Hills Creek of the Red Deer River, Alberta. Described by Cope (op. cit., p. 240) in 1892, by Lambe in 1904 (op. cit., pp. 1-27, pll. iv, v) . Cotype, a smaller skull, Red Deer River, found in 1889, described by Cope in 1892, by Lambe in 1903, 1904 (op. cit., pll. i-iv) . ”

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Source: Wikisource

Henry Fairfield Osborn, Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

“ Beside the parts above enumerated in the table, we have prepared the supraorbital portion of the frontal bone, extremely rugose, constituting a horn above the orbit very similar to that seen in Allosaurus. The jaw is represented by the dentary, angular, and articular. ”

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Source: Wikisource

Henry Fairfield Osborn, Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

“ The type of this skeleton was found by the American Museum expedition of 1900 under Mr. Barnum Brown, whose preliminary report was as follows: "It consists of lower jaws, having that large foramen characteristic of Ceratosaurus, serrated teeth of uneven height joined by cartilage, not anchylosed. Concavo-concave and plano-concave vertebræ of lumbar-dorsal region are deeply excavated on sides and bottom rising to plane surface in region of canal; extremely hollow and as in Morosaurus not having spines and transverse processes united to centra. ”

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Source: Wikisource

Henry Fairfield Osborn, Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs (1905)

“ Post-sacral vertebræ, of which seven were embedded in stone matrix, show plano-plano surfaces. Transverse processes united to centra. Nature of cervical vertebræ not determined. Ribs large, not greatly curved in dorsal region, tapering gradually to those of cervical region. ”

Henry Fairfield Osborn

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