List of ammonite genera

This list of ammonites is a comprehensive listing of genera that are included in the subclass †Ammonoidea, excluding purely vernacular terms.

The list includes genera that are commonly accepted as valid, as well as those that may be invalid or doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered ammonites.

Most of the generic names in this list come from Jack Sepkoski's 2002 compendium of marine fossil genera, which can be corroborated by other sources such as Part L, Ammonoidea, in the Treatise on Invertebrate Paleontology.

Additional generic names included come from the Treatise or various peer review scientific journals.

Uncited genera names can be verified at:

A variety of ammonite forms, from Ernst Haeckel 's 1904 Kunstformen der Natur .
Ammolite is an iridescent gem stone made from the shells of fossil ammonites
The Triassic ammonites Arcestes intuslabiatus (top) and A. binacostomus (bottom), from what is now Austria
Reconstruction of Annuloceras summersi .
Asteroceras , a Jurassic ammonite from England .
Fragmented fossil specimens of Baculites
Bostrychoceras polyplocum
Cobbanites talkeetnanus
Dactylioceras fossil.
Douvilleiceras and Hoplites were French ammonites that lived during the Early Cretaceous .
Discoscaphites iris
An ammonite fossil.
Paleoartist Heinrich Harder 's reconstruction of some ammonites as they would appear in life.
A stone pathway constructed with many ammonite specimens.
A pencil drawing of an ammonite fossil. Ammonitic sutures are visible for part of the shell's length.
An ammonite from Spain.
This internal mold fossil exhibits an ammonitic suture pattern.
A specimen of Hoploscaphites from the Pierre Shale of South Dakota . Much of the original shell has survived.
This is an illustration from British Mineralology by James Smith. The catalogue, from which it is sourced, describes the print as "1802 [sic] Fossil Amonite Engraving"
Jeletzkytes , a Cretaceous ammonite from the United States
Peltoceras solidum , Jurassic period of Israel
An ammonite fossil.
Fossil ammonite
Lithacosphinctes achilles
Uptonia jamesioni
A photo of a Bavarian ammonite being used as a decorative piece in a brick wall.
An iridescent ammonite from Madagascar .
Polished cross-section of an ammonite
An early ammonite reconstruction.
The Aptychus is a mysterious piece of ammonite anatomy.
Two polished halves of an ammonite fossil.
Parapuzosia was a very large ammonite genus.
Restoration of the mosasaur Mosasaurus hoffmannii compared to individuals of Parapuzosia .
Pleuroceras spinatum Museum of Toulouse
Plesiacanthoceras wyomingense .
The pavement outside the Lyme Regis museum, made of concrete cast in the shape of Ammonites.
A Perisphinctes fossil.
Ammonite fossils.
Scaphites fossil.
Shastoceras behemothi (front) and Annuloceras summersi (background)
An ammonite with goniatitic sutures .
The coat of arms of the municipality of Tensfeld contains an ammonite shell and a sundew .
An ammonitic ammonoid with the body chamber missing, showing the septal surface (especially at right) with its undulating lobes and saddles.
Cross-section of an English ammonite.
A gigantic ammonite fossil kept in a German museum.
Fossil ammonite.