Aspidosaurus
Aspidosaurus is an extinct genus of dissorophoid temnospondyl within the family Dissorophidae.

Schoch, R. R. · CC BY-SA 3.0 · 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
- AspidosaurinaePBDB
- Diet
- carnivorePBDB, for Olsoniformes
- Life habit
- ground dwellingPBDB, for Olsoniformes
- Motility
- actively mobilePBDB, for Temnospondyli
- Environment
- brackish,freshwater,terrestrialPBDB, for Tetrapoda
Time the record covers
At least 21 million years on record.
The record covers at least 298.9 Mya to 277.3 Mya. No occurrence read is dated outside 303.7 Mya to 266.9 Mya.
12 occurrences of Aspidosaurus 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
12 occurrences- Carboniferous27%
- Permian73%
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
8 formations
- Belle Plains Formation · Wichita Group2
- Arroyo Formation · Clear Fork Group2
- Admiral Formation · Wichita Group1
- Cutler Formation1
- Lueders Formation · Wichita Group1
- Ada Formation1
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The named rock units Aspidosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Aspidosaurus and its relatives
PermianWhere Aspidosaurus and its relatives were recorded in the Permian.
Found in the same rock
134 taxa- Eryops5 sites
- Diadectes4 sites
- Captorhinus aguti2 sites
- Diadectes zenos2 sites
- Dimetrodon2 sites
- Diplocaulus2 sites
- Dissorophus multicinctus2 sites
- Edaphosaurus novomexicanus2 sites
- Ophiacodon mirus2 sites
- Sphenacodon ferox2 sites
- Temnospondyli2 sites
- Tetrapoda2 sites
- Trimerorhachis insignis2 sites
- Zatrachys serratus2 sites
- Abyssomedon williamsi1 site
- Acheloma1 site
- Acheloma cryptatheria1 site
- Acheloma cumminsi1 site
- Acleistorhinidae1 site
- Aerosaurus1 site
- Aerosaurus greenleeorum1 site
- Aerosaurus wellesi1 site
- Anisodexis1 site
- Archeria1 site
The Paleobiology Database records 9 sites for Aspidosaurus, 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
7 references- Handbook of Paleoherpetology Part 3A2 Temnospondyli I3
- Vertebrate faunal horizons in the Texas Permo-Carboniferous red beds3
- New Upper Pennsylvanian armored dissorophid records (Temnospondyli, Dissorophoidea) from the U.S. midcontinent and the stratigraphic distributions of dissorophids2
- Dissorophid diversity at the early Permian cave system near Richards Spur, Oklahoma, USA1
- Morphology, Phylogeny, and Evolution of Diadectidae (Cotylosauria: Diadectomorpha)1
- American Permian Vertebrates1
- New or little known reptiles and amphibians from the Permian (?) of Texas1
Each of the 12 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 Aspidosaurus
- Source
- Wikipedia/Commons
- Credit
- Schoch, R. R.
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Aspidosaurus was found in MorphoSource and Sketchfab.
Smithsonian Open Access was 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 itAspidosaurinae through timeFormations of the PermianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Broili 1904