File:Allenypterus montanus (fossil coelacanth fish) (Bear Gulch Limestone, Upper Mississippian; Potter Creek Dome, Montana, USA) (15149629150).jpg

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Summary

Description

Allenypterus montanus Melton, 1969 fossil fish from the Mississippian of Montana, USA (public display, FMNH PF 10939, Field Museum of Natural History, Chicago, Illinois, USA).

This Allenypterus montanus fossil coelacanth fish is from estuarine deposits of the Late Mississippian-aged Bear Gulch Lagerstätte at Potter Creek Dome, Montana. Coelacanths are one of three groups of lobe-finned fish (sarcopterygian bony fish). They are known as fossils in the Paleozoic and Mesozoic, but not in the Cenozoic. Despite that, coelacanths are still alive in modern oceans.

Classification: Animalia, Chordata, Vertebrata, Sarcopterygii, Actinistia, Coelacanthiformes, Hadronectoridae

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

Locality: Potter Creek Dome, southeastern Fergus County, central Montana, USA


See info. at: <a href="http://people.sju.edu/~egrogan/BearGulch/pages_fish_species/Allenypterus_montanus.html" rel="nofollow">people.sju.edu/~egrogan/BearGulch/pages_fish_species/Alle...</a> and

<a href="http://people.sju.edu/~egrogan/BearGulch/index.html" rel="nofollow">people.sju.edu/~egrogan/BearGulch/index.html</a>
Date
Source Allenypterus montanus (fossil coelacanth fish) (Bear Gulch Limestone, Upper Mississippian; Potter Creek Dome, Montana, USA)
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@N05/15149629150. It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

7 December 2019

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21 August 2010

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current17:57, 7 December 2019Thumbnail for version as of 17:57, 7 December 20193,740 × 1,748 (5.93 MB)Ser Amantio di NicolaoTransferred from Flickr via #flickr2commons

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