Paratirolites
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.

Korn, D., Hairapetian, V., Ghaderi, A., Leda, L., Schobben, M., & Akbari, A. (2021). The Changhsingian (Late Permian)… · CC BY 4.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- DzhulfitidaePBDB
- Diet
- carnivorePBDB, for Ceratitida
- Life habit
- nektonicPBDB, for Ceratitida
- Motility
- actively mobilePBDB, for Ceratitida
- Vision
- well-developedPBDB, for Cephalopoda
- Environment
- marinePBDB, for Cephalopoda
Time the record covers
At least 3.3 million years on record.
The record covers at least 254.14 Mya to 250.8 Mya. No occurrence read is dated outside 259.857 Mya to 247 Mya.
206 occurrences of Paratirolites on record, most of them in the Permian. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
206 occurrencesThese are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
13 formations
- Hambast Formation71
- Ali Bashi Formation70
- Akhura Formation31
- Ali Bashi Formation9
- Akhura Formation4
- Ali Bashi Formation4
Loading coastlines…
The named rock units Paratirolites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.
Paratirolites and its relatives
PermianWhere Paratirolites and its relatives were recorded in the Permian.
Found in the same rock
170 taxa- Abichites stoyanowi24 sites
- Alibashites mojsisovicsi17 sites
- Stoyanowites dieneri11 sites
- Abichites abichi10 sites
- Dzhulfites spinosus9 sites
- Alibashites ferdowsii8 sites
- Cryptophyllum leptoconicum7 sites
- Ufimia differentiata7 sites
- Abichites6 sites
- Abichites alibashiensis6 sites
- Neoendothyra6 sites
- Shevyrevites nodosus6 sites
- Transcaucasathyris minor6 sites
- Arasella minuta4 sites
- Nodosaria4 sites
- Pentaphyllum cuneatum4 sites
- Pseudogastrioceras4 sites
- Pseudogastrioceras abichianum4 sites
- Xenodiscus4 sites
- Alibashites uncinatus3 sites
- Esfahanites armatus3 sites
- Etheripecten3 sites
- Lutites alius3 sites
- Lutites stepanovi3 sites
The Paleobiology Database records 132 sites for Paratirolites, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
21 references- The Changhsingian (Late Permian) ammonoids from Baghuk Mountain (central Iran)67
- The ammonoids from the Late Permian Paratirolites Limestone of Julfa (East Azerbaijan, Iran)63
- Kotlyar et al., 198335
- The Development and Change of Marine Organisms at the Palaeozoic-Mesozoic Boundary10
- Permian-Triassic strata, Kuh-e-Ali Bashi, northwestern Iran6
- Latest Permian ammonoid Paratirolites from the Ofunato district, Southern Kitakami Massif, Northeast Japan3
- Upper Permian and Permian-Triassic boundary in north Iran3
- Yang et al., 19872
- New material of Permian ammonoids with discussion on the origin, migration of Araxoceratidae and the horizon of the Paratirolites2
- The Permian and the Lower Triassic systems in Abadeh Region, Central Iran2
- Triassic ammonoids of the Nakhichevan ASSR2
- On the character of the boundary of Palaeozoic and Mesozoic near Djulfa2
Each of the 206 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 9 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Paratirolites
- Source
- Wikipedia/Commons
- Credit
- Korn, D., Hairapetian, V., Ghaderi, A., Leda, L., Schobben, M., & Akbari, A. (2021). The Changhsingian (Late Permian)…
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Paratirolites was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itDzhulfitidae through timeFormations of the PermianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Stoyanow 1910