File:Placerias hesternus Lucas 1904 holotype USNM2198.png

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Description
English: Original figure caption: External Aspect of Right Humerus of Placerias hesternus (Type. No.2198, U.S.N.M.)
Additional notes: The specimen comes from the Lower Petrified Forest Member of the Chinle Formation (Upper Carnian), from 3 miles north of Tanners Crossing, northern Arizona, west of Grand Canyon National Park, USA. The length of the specimen is about 40 cm (16 in).
Date
Source Plate IV in: A new batrachian and a new reptile from the Trias of Arizona. Proceedings of the United States National Museum 27: 193–195
Author Frederic Augustus Lucas (1852–1929)

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current10:05, 2 June 2020Thumbnail for version as of 10:05, 2 June 20201,045 × 1,890 (1.59 MB)Gretarsson (talk | contribs){{Information |description ={{en|1=Original figure caption: ''{{Small caps|External Aspect of Right Humerus of Placerias hesternus}} (Type. No.2198, U.S.N.M.)''<br> Additional note: The specimen comes from the Lower Petrified Forest Member of the Chinle Formation (Upper Carnian), from 3 miles north of Tanners Crossing, northern Arizona, west of Grand Canyon National Park, USA.}} |date =1904 |source =[https://archive.org/details/proceedingsofuni271904unit/page/n227/mode/2up P...

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