Pachydiscus
Sign in to savePachydiscus is an extinct genus of ammonite from the Late Cretaceous and Early Paleocene with a worldwide distribution, and type for the desmoceratacean family Pachydiscidae. The genus' type species is P. neubergicus. Altogether some 28 species have been described.
Wikidata facts
- Image
- Pachydiscus neubergicus.jpg
Show 3 more facts
- Commons category
- Pachydiscus
- taxon name
- Pachydiscus
- taxon rank
- genus
Sources (1)
via Wikidata · CC0
~3 min read
Encyclopedic overview
4 sectionsContents
- Biostratigraphic significance
- Distribution
- References
- Further reading
Pachydiscus is an extinct genus of ammonite from the Late Cretaceous and Early Paleocene with a worldwide distribution, and type for the desmoceratacean family Pachydiscidae. The genus' type species is P. neubergicus. Altogether some 28 species have been described.
The shell of Pachydiscus is compressed and high-whorled, with an oval or flat sided section. Ribs tend to be differentiated into short umbilical and separate ventro-lateral sets, with a smooth area between. Some Hungarian specimens of this genus reached in diameter.
Excerpted from Wikipedia’s “Pachydiscus” article, available under the CC BY-SA 4.0 licence.