File:Opalized Peratobelus fossil belemnite (Bulldog Shale, Lower Cretaceous; Coober Pedy Opal Field, South Australia) 1 (15054623699).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (1,102 × 439 pixels, file size: 381 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description

South Australia’s Coober Pedy Opal Field is famous for having fossils that have been replaced by precious opal (hydrous silica - SiO2·nH2O). Recovered opalized fossils from Coober Pedy include bivalves, gastropods, belemnites, crinoids, ichthyosaurs, and plesiosaurs. Here is an example of an opalized belemnite.

Belemnites are a group of extinct cephalopods having a squid-like body and a solid, calcareous, internal, elongated, bullet-shaped skeleton called a guard.

Two species of Peratobelus belemnites have been reported from the Coober Pedy area: Peratobelus oxys Tenison-Woods, 1883 and Peratobelus bauhinianus Skwarko, 1966. The material shown above appears consistent with Peratobelus oxys.

Classification: Animalia, Mollusca, Cephalopoda, Coleoidea, Belemnitida, Dimitobelidae

Locality: unrecorded mine field in Coober Pedy Opal Field, north-central South Australia State, southern Australia

Stratigraphy: “weathered zone” of the Bulldog Shale, Marree Subgroup, Aptian Stage, upper Lower Cretaceous

Some info. from:

Williamson, T. 2006. Systematics and Biostratigraphy of Australian Early Cretaceous Belemnites with Contributions to the Timescale and Palaeoenvironmental Assessment of the Australian Early Cretaceous System Derived from Stable Isotope Proxies. Ph.D. dissertation. James Cook University. Townsville, Queensland, Australia. 5+50+25+47+46+9+18+(21) pp. 5 pls.

See info. at: <a href="https://en.wikipedia.org/wiki/Belemnitida" rel="nofollow">en.wikipedia.org/wiki/Belemnitida</a> and

<a href="https://en.wikipedia.org/wiki/Belemnoidea" rel="nofollow">en.wikipedia.org/wiki/Belemnoidea</a>
Date
Source Opalized Peratobelus fossil belemnite (Bulldog Shale, Lower Cretaceous; Coober Pedy Opal Field, South Australia) 1
Author James St. John

Licensing

[edit]
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15054623699 (archive). It was reviewed on 16 November 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

16 November 2019

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current01:08, 16 November 2019Thumbnail for version as of 01:08, 16 November 20191,102 × 439 (381 KB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Opalized_Peratobelus_fossil_belemnite_(Bulldog_Shale,_Lower_Cretaceous;_Coober_Pedy_Opal_Field,_South_Australia)_1_(15054623699).jpg&oldid=889175396"