File:Diorama of Mississippian fossil fish - Echinochimaera 1 (45701011771).jpg

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Seen here is a model-based reconstruction of life in the ancient ocean during the Mississippian. This is a public exhibit at the Museum of the Rockies in Bozeman, Montana.

These odd looking fish are Echinochimaera, which are fossil holocephalians known only from estuarine deposits of the Late Mississippian-aged Bear Gulch Lagerstätte in Montana.

From museum signage: This spiny chimaera is related to modern chimaeras and ratfish. Antler-like scales and large fins were used to attract females and impress other males.

Classification: Animalia, Chordata, Vertebrata, Chondrichthyes, Holocephali, Chimaeriformes, Echinochimaeridae

Stratigraphy: Bear Gulch Limestone Member, Heath Formation, Upper Mississippian

See: <a href="https://www.flickr.com/photos/jsjgeology/33784748875">www.flickr.com/photos/jsjgeology/33784748875</a> and

<a href="https://en.wikipedia.org/wiki/Echinochimaera" rel="nofollow">en.wikipedia.org/wiki/Echinochimaera</a>
Date
Source Diorama of Mississippian fossil fish - Echinochimaera 1
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@N05/45701011771 (archive). It was reviewed on 6 November 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

6 November 2018

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current04:21, 6 November 2018Thumbnail for version as of 04:21, 6 November 20182,790 × 1,784 (5.95 MB)Lu Brito (talk | contribs)Transferred from Flickr via #flickr2commons

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