Ammonoidea
Information about the biology of ammonoids from The Cephalopod Page.

Body Position and the Functional Morphology of Cretaceous Heteromorph Ammonites
An article in Paleontographic Electronica.

WMNH - Ammonites
Ammonites at the Black Hills Institute

Jurassic Ammonites
Systematic collection of fossil cephalopoda with ammonites of typical faunas. Also includes myths and legends about ammonites.

Computational Paleontology
Modelling ammonite ribs and sutures.

Ammonites of the Mesozoic
Site has both French and English versions.

Fossil Cephalopods in Utah
A pictorial guide to some of the fossil cephalopods that can be found in the State of Utah, mostly Ammonoids, but many other cephalopods are pictured. Pictures of some collecting localities are also included.