Aetosaurinae
Aetosaurinae is one of the two main clades of aetosaurs, the other being Desmatosuchia. It is a stem-based taxon defined as all aetosaurs more closely related to Aetosaurus than Desmatosuchus. Aetosaurinae currently comprises Aetosaurus, similar forms such as Coahomasuchus and Stenomyti, and the widespread and successful aetosaur clade Typothoracinae.

Ghedoghedo · 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
- StagonolepididaePBDB
- Diet
- herbivorePBDB, for Aetosauria
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Diapsida
Time the record covers
At least 105 million years on record.
The record covers at least 227.3 Mya to 121.4 Mya. No occurrence read is dated outside 237 Mya to 119.57 Mya.
159 occurrences of Aetosaurinae on record, most of them in the Late 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
159 occurrences- Late Triassic99%
- Early Cretaceousunder 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
26 formations
- Chinle Formation84
- Garita Creek Formation · Chinle Group13
- Cooper Canyon Formation · Dockum Group10
- Löwenstein Formation · Keuper Group7
- Bull Canyon Formation · Dockum Group5
- Redonda Formation · Chinle Group5
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The named rock units Aetosaurinae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 further formations hold fewer occurrences each and are not listed.
Aetosaurinae and its relatives
Late TriassicWhere Aetosaurinae and its relatives were recorded in the Late Triassic.
Found in the same rock
389 taxa- Typothorax coccinarum79 sites
- Mystriosuchini21 sites
- Paratypothorax20 sites
- Mystriosuchinae19 sites
- Archosauria17 sites
- Metoposauridae16 sites
- Reptilia16 sites
- Theropoda16 sites
- Apachesaurus gregorii14 sites
- Phytosauria13 sites
- Anaschisma browni12 sites
- Arganodus12 sites
- Machaeroprosopus buceros11 sites
- Redfieldiidae11 sites
- Shuvosaurus11 sites
- Stagonolepididae11 sites
- Typothorax11 sites
- Archosauriformes9 sites
- Leptosuchus8 sites
- Postosuchus8 sites
- Postosuchus kirkpatricki8 sites
- Shuvosaurus inexpectatus8 sites
- Aetosauria7 sites
- Osteichthyes7 sites
The Paleobiology Database records 136 sites for Aetosaurinae, 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
58 references- Late Triassic (Carnian and Norian) Tetrapods from the Southwestern United States47
- A new species of the aetosaur Typothorax (Archosauria: Stagonolepididae) from the Upper Triassic of east-central New Mexico13
- Lithostratigraphy, chemostratigraphy, and vertebrate biostratigraphy of the Dockum Group (Upper Triassic), of southern Garza County, West Texas. Unpublished PhD thesis, Texas Tech University9
- Advances in Late Triassic vertebrate paleontology based on new material from Petrified Forest National Park, Arizona7
- A vertebrate fauna from the Upper Triassic Owl Rock Member of the Chinle Formation in Northern Arizona, Northern Arizona University7
- Biostratigraphic utility of the Upper Triassic aetosaur Tecovasuchus (Archosauria: Stagonolepididae), an index taxon of St. Johnsian (Adamanian: late Carnian) time6
- Revised phylogenetic analysis of the Aetosauria (Archosauria: Pseudosuchia); assessing the effects of incongruent morphological character sets5
- Tecovasuchus chatterjeei, a new aetosaur (Archosauria: Stagonolepididae) from the Tecovas Formation (Carnian, Upper Triassic) of Texas4
- A reappraisal of the taxonomic status of Aetosauroides (Archosauria, Aetosauria) specimens from the Late Triassic of South America and their proposed synonymy with Stagonolepis3
- Fossil Vertebrate Collections3
- Geology and paleontology of the Chinle Formation, Petrified Forest National Park and vicinity, Arizona and a discussion of vertebrate fossils of the southwestern Upper Triassic3
- A new aetosaur from the Upper Triassic Chinle Formation of the Eagle Basin, Colorado, USA2
Each of the 159 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. 46 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 Aetosaurinae
- Source
- Wikipedia/Commons
- Credit
- Ghedoghedo
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Aetosaurinae 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 itStagonolepididae through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Baur 1887)