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Summary
| Description |
Plesiosaurus Hawkinsii, nat. size. Fig. 1. Oblique side view of skull. 2. Under view of skull. In comparison with the skull of Plesiosaurus dolichodeirus, Tabs. II and III, tbese figures exemplify the specific distinction of Pies. Hawkinsii in the greater longitudinal extent of the temporal fossse, and in the greater relative length and slenderness of the muzzle or facial part of the skull, the sides of which converge at a more acute angle and are more concave. The symphysis of the mandible is longer in PL Hawkinsii. The teeth in both jaws are relatively larger and longer in Plesiosaurus dolichodeirus. As compared with Plesiosaurus rostratus, Tabs. IX and XIII, the facial part of the skull is relatively shorter in Plesiosaurus Hawkinsii ; the pterygoids do not extend quite so far back; the " palatonares," Tab. XVI, fig. 2, r, r, are smaller, with more rounded ends of the ellipse. The following bones are indicated by the figures : 1. Basi-occipital. 2. Par-occipital. 7. Parietal (near the "foramen parietale"). 7'. lb., " supra-mastoid process." 8. Mastoid. 11. Frontal. 15. Nasal (above the external nostril). 20. Palatine. 24. Pterygoid. 25. Ecto-pterygoid. 26. Malar. 27. Squamosal. 28. Tympanic. 31. Angular. 31'. Splenial. 33. Dentary. The skulls here figured are from the Lias of Street, Somersetshire. In the British Museum. |
| Date | between 1849 and 1884 |
| Source | https://www.biodiversitylibrary.org/item/99821#page/162/mode/1up |
| Author | J. Dinkel |
Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:50, 29 March 2024 | | 2,356 × 2,936 (7.43 MB) | FunkMonk | {{Information |Description=Plesiosaurus Hawkinsii, nat. size. Fig. 1. Oblique side view of skull. 2. Under view of skull. In comparison with the skull of Plesiosaurus dolichodeirus, Tabs. II and III, tbese figures exemplify the specific distinction of Pies. Hawkinsii in the greater longitudinal extent of the temporal fossse, and in the greater relative length and slenderness of the muzzle or facial part of the skull, the sides of which converge at a more acute angle and are more conca... |
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