Archive image from page 20 of Description of new carnivores from. Description of new carnivores from the Miocene of western Nebraska descriptionofnew45pete Year: 1910 PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 225 and the zygapophyses and neural spines, especially of the thirteenth dorsal, are typically lumbar in character. Measurements of Twelfth and Thirteenth Dorsal Vertebrae. d. 12 D. 13 Mm. Mm. Antero-posterior diameter of centra 28 29 Transverse diameter of centra posteriorly 26 27 Vertical diameter of centra posteriorly 17 19 Transverse diameter at transverse processes
Archive image from page 20 of Description of new carnivores from. Description of new carnivores from the Miocene of western Nebraska descriptionofnew45pete Year: 1910 PETERSON : NEW CARNIVORES FROM MIOCENE OF WESTERN NEBRASKA 225 and the zygapophyses and neural spines, especially of the thirteenth dorsal, are typically lumbar in character. Measurements of Twelfth and Thirteenth Dorsal Vertebrae. d. 12 D. 13 Mm. Mm. Antero-posterior diameter of centra 28 29 Transverse diameter of centra posteriorly 26 27 Vertical diameter of centra posteriorly 17 19 Transverse diameter at transverse processes 31 33 Height of neural spine 25 First Lumbar Vertebra. — The first lumbar vertebra is slightly larger than the last dorsal. Besides the absence of facets for ribs it also differs from the latter in having a sharper ventral keel, bet- ter developed lateral tubercles on the ventral posterior face of the centrum, larger transverse processes, which are placed lower down, and a slightly heavier neural spine. In Dajihcc- nus felinus the lumbar vertebras have relatively longer and narrower centra, with the ventral keel and lateral posterior Fl°- 19- First Lumbar Ver- , • i -i n , . t . tebraof ' tubercles of greater prominence, longer transverse processes, and the neural spines possibly somewhat higher than in the present genus. Measurements of First Lumbar Vertebra. Mm. Antero-posterior diameter of centrum 33 Transverse diameter of centrum 27 Vertical diameter of centrum 19 Transverse diameter at transverse processes, approximately 45 Height of neural spine 26
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