Tirolites
Tirolites is an extinct genus of ammonoid cephalopod. Its first appearance defines the Smithian-Spathian boundary in the Olenekian stage of the Early Triassic epoch. It is prominent in the Paris biota.

Ghedo · CC BY-SA 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
- TirolitidaePBDB
- 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 13 million years on record.
The record covers at least 250.8 Mya to 237 Mya. No occurrence read is dated outside 251.902 Mya to 233.6 Mya.
205 occurrences of Tirolites on record, most of them in the Early Triassic. 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
205 occurrences- Early Triassic99%
- Late Triassicunder 1%
These 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
31 formations
- Werfen Formation47
- Tartalinskaya Formation22
- Csopak Marl Formation16
- Thaynes Formation11
- Bac Thuy Formation11
- Werfen Formation10
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The named rock units Tirolites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 further formations hold fewer occurrences each and are not listed. 29 occurrences have no formation on record, which is common for older literature.
Tirolites and its relatives
Early TriassicWhere Tirolites and its relatives were recorded in the Early Triassic.
Found in the same rock
433 taxa- Bakevellia exporrecta15 sites
- Dinarites14 sites
- Columbites13 sites
- Werfenella rectecostata11 sites
- Crittendenia australasiatica10 sites
- Gastropoda10 sites
- Ladinaticella costata10 sites
- Natiria costata10 sites
- Pseudosageceras9 sites
- Columbites parisianus8 sites
- Costatoria costata8 sites
- Eumorphotis telleri8 sites
- Neoschizodus laevigatus8 sites
- Pseudomonotis8 sites
- Dinarites dalmatinus7 sites
- Trematoceras7 sites
- Dalmatites morlaccus6 sites
- Idahocolumbites cheneyi6 sites
- Leptochondria albertii6 sites
- Unionites canalensis6 sites
- Bittnerithyris margaritovi5 sites
- Eumorphotis5 sites
- Hellenites5 sites
- Jeanbesseiceras jacksoni5 sites
The Paleobiology Database records 129 sites for Tirolites, 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
43 references- Die Cephalopoden der oberen Werfener Schichten von Muć in Dalmatien sowie von anderen dalmatinischen, bosnisch-herzegowinischen und alpinen Lokalitäten48
- Die Cephalopoden der Mediterranen Triasprovinz30
- Examples of Late Olenekian invertebrate successions: Paper 1. Western Tethys (Dolnapa, Mangyshlak)23
- The lower Triassic sequences of the Dolomites (Italy) and transdanubian mid-mountains (Hungary) and their correlation16
- Olenekian (Early Triassic) stratigraphy and fossil assemblages in northeastern Vietnam8
- New middle Olenekian (Early Triassic) ammonoids of South Primorye6
- Ammonoids of the late Scythian (Lower Triassic)6
- Ammonoids and nautiloids from the earliest Spathian Paris Biota and other early Spathian localities in southeastern Idaho, USA5
- Spathian (Lower Triassic) ammonoids from western USA (Idaho, California, Utah and Nevada)5
- Triassic Ammonoid succession in South Primorye: 2. Middle Olenekian Tirolites - Amphistephanites Zone5
- Lower Triassic, Xihuancang Formation, Jianghe Formation, Yangkang Formation4
- Cephalopoda4
Each of the 205 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. 31 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 Tirolites
- Source
- Wikipedia/Commons
- Credit
- Ghedo
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Tirolites”
- 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 itTirolitidae through timeFormations of the Early TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Mojsisovics 1879