Herrerasauria

Fred Wierum · CC BY-SA 4.0 · via Wikidata/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
- TheropodomorphaPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Diapsida
Time the record covers
At most 36 million years on record.
Every occurrence read is dated to somewhere between 237 Mya and 201.4 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
5 occurrences of Herrerasauria 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
5 occurrences- Late Triassic100%
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
4 formations
- Chinle Formation2
- Magnesian Conglomerate Formation1
- Maleri Formation · Gondwana Group1
- Tecovas Formation · Dockum Group1
Loading coastlines…
The named rock units Herrerasauria has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Herrerasauria and its relatives
Late TriassicWhere Herrerasauria and its relatives were recorded in the Late Triassic.
Found in the same rock
62 taxa- Mystriosuchinae3 sites
- Coelophysis2 sites
- Crocodylomorpha2 sites
- Lepidosauria2 sites
- Reptilia2 sites
- Stagonolepididae2 sites
- Typothorax coccinarum2 sites
- Actinopteri1 site
- Anaschisma1 site
- Anchisauria1 site
- Antediplodon1 site
- Apachesaurus gregorii1 site
- Archosauria1 site
- Archosauriformes1 site
- Archosauromorpha1 site
- Arganodus1 site
- Asylosaurus yalensis1 site
- Caseosaurus1 site
- Caseosaurus crosbyensis1 site
- Chondrichthyes1 site
- Clevosaurus1 site
- Coelacanthidae1 site
- Coelophysidae1 site
- Coelophysoidea1 site
The Paleobiology Database records 5 sites for Herrerasauria, 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
5 references- A new herrerasaurian dinosaur from the Upper Triassic Upper Maleri Formation of south-central India1
- Notes on the remains of archosaurian reptiles, mostly basal sauropodomorph dinosaurs, from the 1834 fissure fill (Rhaetian, Upper Triassic) at Clifton in Bristol, southwest England1
- A critical re-evaluation of the Late Triassic dinosaur taxa of North America1
- Late Triassic dinosaurs from the western United States1
- A new specimen of an early crocodylomorph (cf. Sphenosuchus sp.) from the Upper Triassic Chinle Formation of Petrified Forest National Park, Arizona1
Each of the 5 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. 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 Herrerasauria
- Source
- Wikidata/Commons
- Credit
- Fred Wierum
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Herrerasauria 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itTheropodomorpha through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Galton 1985