File:Pseudodiplacodon progressum (fossil mammal) (Uinta Formation, Lower Eocene; Skull Pass Quarry, north of Ouray, Utah, USA) 2 (32323694913).jpg

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Pseudodiplacodon progressum (Peterson, 1934) - fossil brontothere skeleton from the Eocene of Utah, USA. (CM 11879, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA)

Formerly known as Diplacodon progressum.

This is the holotype specimen of Pseudodiplacodon progressum. This species is a brontothere (a.k.a. titanothere), an extinct group of moderately large, rhinoceros-like mammals. Many brontotheres had nasal horns - this feature was sexually dimorphic (present in males, absent in females).

From museum signage: "[Pseudodiplacodon] had two distinctive nasal horns. This huge titanothere was one of the earliest to develop horns, a characteristic shared by later animals of the family."

Classification: Animalia, Chordata, Vertebrata, Mammalia, Perissodactyla, Brontotheriidae

Stratigraphy: lower Myton Member, Uinta Formation, Uintan Stage, Lower Eocene

Locality: Skull Pass Quarry, ~7 miles north of the town of Ouray, Uintah County, northeastern Utah, USA

Some info. from: Mader (2000) - Pseudodiplacodon, a new generic name for Diplacodon progressum Peterson (Mammalia, Perissodactyla, Brontotheriidae). Journal of Vertebrate Paleontology 20: 164-166.

See info. at:

<a href="https://en.wikipedia.org/wiki/Brontotheriidae" rel="nofollow">en.wikipedia.org/wiki/Brontotheriidae</a>
Date
Source Pseudodiplacodon progressum (fossil mammal) (Uinta Formation, Lower Eocene; Skull Pass Quarry, north of Ouray, Utah, USA) 2
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/32323694913 (archive). It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

6 December 2019

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current02:04, 6 December 2019Thumbnail for version as of 02:04, 6 December 20193,760 × 2,501 (8.19 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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