Paratirolites
Genus of molluscs (fossil)
title: "Paratirolites" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["triassic-ammonites", "ceratitida-genera", "fossils-of-iran", "lopingian-first-appearances", "early-triassic-extinctions", "xenodiscoidea", "lopingian-life", "changhsingian-life", "early-triassic-life", "induan-life"] description: "Genus of molluscs (fossil)" topic_path: "geography/iran" source: "https://en.wikipedia.org/wiki/Paratirolites" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Genus of molluscs (fossil) ::
| fossil_range = | image = Paratirolites robustus (10.5852-ejt.2021.776.1559) Figure 26.png | image_caption = | taxon = Paratirolites | authority = Stoyanow, 1910
Paratirolites is a genus of latest Permian and earliest Triassic ceratites from Armenia, Azerbaijan, Afghanistan, China and Iran with distinct ribs, prominent ventro-lateral tubercles, and a broadly arched venter. The suture is ceratitic with a large ventral saddle. Ceratites are ammonoid cephalopods that lived during the Late Permian and Triassic.
Paratirolites is included in the Xenodiscoidean family Dzhulfitidae along with Abichites and Dzhulfites. Previously it was included in the Stephanitidae, a family belonging to the Ceratitoidea.
Species of Paratirolites have also been found in the Upper Permian of Azerbaijan, China, Thailand and Japan, and in the Triassic of Azerbaijan and Afghanistan.
References
References
- Arkell, et al, 1957. Mesozoic Ammonoidea. [[Treatise on Invertebrate Paleontology]], Part L. Geological Soc. of America and Univ. Kansas press
- Tozer, Edward T.. (1979). "The significance of the ammonoids ''Paratirolites'' and ''Otoceras'' in correlating the Permian–Triassic boundary beds of Iran and the People's Republic of China". Canadian Journal of Earth Sciences.
- (2016). "The ammonoids from the Late Permian ''Paratirolites'' Limestone of Julfa (East Azerbaijan, Iran)". Journal of Systematic Palaeontology.
- [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14312 Paratirolites-Paleodb]
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