File:Graftonoceras fossil nautiloid (Lockport Dolomite, Middle Silurian; Coldwater, southern Mercer County, western Ohio, USA) (15054984258).jpg
_(15054984258).jpg){kind=small}
Original file (1,474 × 1,270 pixels, file size: 1.98 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
Graftonoceras - limonite-stained external mold in dolostone (public display, OSU 24835, Orton Geology Museum, Ohio State University, Columbus, Ohio, USA). Nautiloids are squid-like creatures that construct long and slightly tapering or coiled, aragonitic, hollow shells with regularly-spaced internal walls. In the fossil record, the original aragonite shell has usually dissolved away, leaving an internal mold (an impression of the shell's interior). Nautiloids were relatively common components of Paleozoic oceans. Most species had straight, slightly tapering shells, but some had loosely coiled or tightly coiled shells. The entire group is represented in today's oceans by three living species of chambered nautilus - Nautilus pompilius, Nautilus macromphalus, and Allonautilus scrobiculatus. This external mold of a Graftonoceras nautiloid has a coiled shell. The pattern of its original shell ornament, consisting of curvilinear waves, is still preserved. Classification: Animalia, Mollusca, Cephalopoda, Nautiloidea, Tarphycerida, Trocholitidae Stratigraphy: Lockport Dolomite, Niagaran Series, Middle Silurian Locality: unrecorded locality (probably a quarry) at or near Coldwater, southern Mercer County, western Ohio, USA |
| Date | |
| Source | Graftonoceras fossil nautiloid (Lockport Dolomite, Middle Silurian; Coldwater, southern Mercer County, western Ohio, USA) |
| Author | James St. John |
Licensing
- 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 jsj1771 at https://www.flickr.com/photos/47445767@N05/15054984258. It was reviewed on 18 November 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:12, 18 November 2014 | | 1,474 × 1,270 (1.98 MB) | Tillman | Transferred from Flickr via Flickr2Commons |
File usage
Global file usage
The following other wikis use this file:
- Usage on hy.wikipedia.org
_(15054984258).jpg){kind=link}