Stagonolepididae
Searched as Stagonolepididae indet.. The Paleobiology Database treats Stagonolepididae as the accepted name.

No machine-readable author provided. ArthurWeasley~commonswiki assumed (based on copyright claims). · CC BY 2.5 · 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
- AetosauriaPBDB
- Diet
- herbivorePBDB, for Aetosauria
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Diapsida
Time the record covers
At most 32 million years on record.
Every occurrence read is dated to somewhere between 237 Mya and 205.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
26 occurrences of Stagonolepididae 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
26 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
9 formations
- Garita Creek Formation · Chinle Group8
- Chinle Formation7
- Tecovas Formation · Chinle Group4
- Redonda Formation · Chinle Group2
- Bluewater Creek Formation · Chinle Group1
- Cooper Canyon Formation · Dockum Group1
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The named rock units Stagonolepididae has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Stagonolepididae and its relatives
Late TriassicWhere Stagonolepididae and its relatives were recorded in the Late Triassic.
Found in the same rock
522 taxa- Typothorax coccinarum79 sites
- Calyptosuchus wellesi45 sites
- Anaschisma browni37 sites
- Metoposauridae31 sites
- Mystriosuchinae30 sites
- Leptosuchus29 sites
- Reptilia28 sites
- Phytosauria27 sites
- Aetosauria26 sites
- Archosauria25 sites
- Mystriosuchini21 sites
- Arganodus20 sites
- Paratypothorax20 sites
- Apachesaurus gregorii19 sites
- Theropoda19 sites
- Redfieldiidae18 sites
- Osteichthyes14 sites
- Postosuchus kirkpatricki14 sites
- Archosauriformes13 sites
- Vancleavea campi13 sites
- Machaeroprosopus buceros11 sites
- Poposaurus gracilis11 sites
- Shuvosaurus11 sites
- Temnospondyli11 sites
The Paleobiology Database records 231 sites for Stagonolepididae, 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
16 references- Fossil Vertebrate Collections8
- Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A.3
- The vertebrate macrofauna of the Upper Triassic (Apachean) Redonda Formation, east-central New Mexico2
- Lithostratigraphy, chemostratigraphy, and vertebrate biostratigraphy of the Dockum Group (Upper Triassic), of southern Garza County, West Texas. Unpublished PhD thesis, Texas Tech University1
- The vertebrate assemblage of the Late Triassic Canjilon Quarry (northern New Mexico, USA), and the importance of apomorphy-based assemblage comparisons1
- The microvertebrate fauna of the Upper Triassic (Revueltian) Snyder Quarry, north-central New Mexico1
- Advances in Late Triassic vertebrate paleontology based on new material from Petrified Forest National Park, Arizona1
- South American occurrences of the Adamanian (Late Triassic: latest Carnian) index taxon Stagonolepis (Archosauria: Aetosauria) and their biochronological significance1
- Diminutive metoposaurid skulls from the Upper Triassic Blue Hills (Adamanian: latest Carnian) of Arizona1
- The vertebrate fauna, biostratigraphy and biochronology of the type Revueltian land-vertebrate faunachron, Bull Canyon Formation (Upper Triassic), east-central New Mexico1
- Late Triassic (Carnian and Norian) Tetrapods from the Southwestern United States1
- A late Carnian theropod from New Mexico: implications for the early evolution of Theropoda1
Each of the 26 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. 4 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 Stagonolepididae
- Source
- Wikidata/Commons
- Credit
- No machine-readable author provided. ArthurWeasley~commonswiki assumed (based on copyright claims).
- Licence
- CC BY 2.5
- Commercial use
- the licence allows it
No 3D scan of Stagonolepididae 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 itAetosauria through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Lydekker 1887)