Richmondoceras
Richmondoceras is an extinct genus of actively mobile carnivorous cephalopods, essentially a Nautiloid, that lived in what would be North America during the Ordovician and Silurian from 449.5—443.7 mya, existing for approximately 5.8 million years.[1]
| Richmondoceras Temporal range: Ordovician-Silurian | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Subclass: | |
| Order: | |
| Genus: | Richmondoceras Frey (1995) |
Taxonomy
Richmondoceras was named by Frey (1995). Its type is Richmondoceras brevicameratum. It was assigned to Orthocerida by Frey (1995).[2]
Morphology
The shell is usually long, and may be straight ("orthoconic") or gently curved. In life, these animals may have been similar to the modern squid, except for the long shell.
Fossil distribution
Fossil distribution is exclusive to Indiana, USA.
gollark: My neural interface is ID 1981 by the way.
gollark: *Anavrin's snooper becomes a bit busier*
gollark: *nothing of consequence happens*
gollark: The worst you could do is... probably spoof my GPS on there, but I don't often run programs which need it and wojbie would eat you.
gollark: Anyway. Sending random modem messages to my neural interface, please understand, will do nothing of any consequence at all.
References
- PaleoBiology Database: Richmondoceras, basic info
- R. C. Frey. 1995. Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati Arch region of Kentucky, Indiana, and Ohio. U.S. Geological Survey Professional Paper 1066P:1-126
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.