Paratirolites

{{Short description|Genus of molluscs (fossil)}}

{{Automatic taxobox

| fossil_range = {{fossilrange|Upper Permian|Lower Triassic}}

| 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.Arkell, et al, 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L. Geological Soc. of America and Univ. Kansas press{{cite journal |last=Tozer |first=Edward T. |year=1979 |title=The significance of the ammonoids Paratirolites and Otoceras in correlating the Permian–Triassic boundary beds of Iran and the People's Republic of China |journal=Canadian Journal of Earth Sciences |volume=16 |issue=7 |pages=79–139 |doi=10.1139/e79-139}}{{cite journal |last1=Korn |first1=Dieter |last2=Ghaderi |first2=Abbas |last3=Leda |first3=Lucyna |last4=Schobben |first4=Martin |last5=Ashouri |first5=Ali Reza |year=2016 |title=The ammonoids from the Late Permian Paratirolites Limestone of Julfa (East Azerbaijan, Iran) |journal=Journal of Systematic Palaeontology |volume=14 |issue=10 |pages=841–890 |doi=10.1080/14772019.2015.1119211|bibcode=2016JSPal..14..841K |s2cid=130932875 }} 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.[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14312 Paratirolites-Paleodb] 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.