Agoniatites

Agoniatites Temporal range:
Agoniatites expansus fossil, National Museum of Natural History
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Agoniatitida
Family:	Agoniatitidae
Genus:	Agoniatites Meek (1877)

Agoniatites is a genus of primitive ammonoids belonging to the order Agoniatitida family Agoniatitidae.

Species of this genus were fast-moving nektonic carnivore shelled ammonoids. They lived in the Eifelian and Givetian ages of the middle Devonian period, which occurred 385.3-397.5 million years ago.

Vanuxemi agoniatites is a rare species in this group which is the only ammonoid found in the Hamilton Group (Mahantango Formation) in Pennsylvania and New York.

Fossil distribution

Devonian of Algeria, Canada (Northwest Territories), the Czech Republic, Morocco, Russia, United States (Alaska, Nevada, New York, Pennsylvania)

Species

• Agoniatites annulatus
• Agoniatites bicanaliculatus
• Agoniatites costulatus
• Agoniatites kayseri Wedekind
• Agoniatites nodiferus Hall
• Agoniatites obliquus Whidborne
• Agoniatites occultus
• Agoniatites vanuxemi

Gallery

• 
  Agoniatites nodiferus
• 
  Agoniatites vanuxemi (Fossil discovered by Michael Tomczyk at a 385 million year old Devonian formation near Deer Lake, Pennsylvania in 2013)

References

• Zipcodezoo
• Biolib
• The Paleobiology Database
• Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopodes
• Wikimedia Commons