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.[1][2][3] Ceratites are ammonoid cephalopods that lived during the Late Permian and Triassic.
| Paratirolites Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ceratitida |
| Family: | †Dzhulfitidae |
| Genus: | †Paratirolites Stoyanow, 1910 |
Paratirolites is included in the Xenodiscoidean family Dzhulfitidae along with Abichites and Dzhulfites.[4] Previously it was included in the Stephanitidae,[1] 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.[4]
References edit
- ^ a b 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. 16 (7): 79–139. doi:10.1139/e79-139.
- ^ Korn, Dieter; Ghaderi, Abbas; Leda, Lucyna; Schobben, Martin; Ashouri, Ali Reza (2016). "The ammonoids from the Late Permian Paratirolites Limestone of Julfa (East Azerbaijan, Iran)". Journal of Systematic Palaeontology. 14 (10): 841–890. Bibcode:2016JSPal..14..841K. doi:10.1080/14772019.2015.1119211. S2CID 130932875.
- ^ a b Paratirolites-Paleodb