Metoposauridae
Metoposauridae is an extinct family of trematosaurian temnospondyls. The family is known from the Late Triassic period. Most members are large, approximately 1.5 metres (4.9 ft) long and could reach 3 m long. Metoposaurids can be distinguished from most other stereospondyls by the position of their eyes, placed far forward on the snout.

Dmitry Bogdanov · 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
- TrematosauroideaPBDB
- Diet
- carnivorePBDB, for Temnospondyli
- Life habit
- amphibiousPBDB, for Temnospondyli
- Motility
- actively mobilePBDB, for Temnospondyli
- Environment
- brackish,freshwater,terrestrialPBDB, for Tetrapoda
Time the record covers
At least 37 million years on record.
The record covers at least 243.43 Mya to 205.7 Mya. No occurrence read is dated outside 244.4 Mya to 201.4 Mya.
252 occurrences of Metoposauridae 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
252 occurrences- Middle Triassicunder 1%
- 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
40 formations
- Chinle Formation117
- Bluewater Creek Formation · Chinle Group14
- Redonda Formation · Chinle Group12
- Tecovas Formation · Dockum Group11
- Popo Agie Formation · Chugwater Group10
- Cooper Canyon Formation · Dockum Group6
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The named rock units Metoposauridae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 16 further formations hold fewer occurrences each and are not listed. 1 occurrence has no formation on record, which is common for older literature.
Metoposauridae and its relatives
Late TriassicWhere Metoposauridae and its relatives were recorded in the Late Triassic.
Found in the same rock
382 taxa- Anaschisma browni69 sites
- Phytosauria45 sites
- Leptosuchus35 sites
- Calyptosuchus wellesi33 sites
- Apachesaurus gregorii30 sites
- Reptilia30 sites
- Typothorax coccinarum28 sites
- Aetosauria26 sites
- Mystriosuchinae26 sites
- Archosauria25 sites
- Arganodus23 sites
- Redfieldiidae21 sites
- Anaschisma17 sites
- Vancleavea campi16 sites
- Theropoda15 sites
- Apachesaurus14 sites
- Mystriosuchini14 sites
- Osteichthyes13 sites
- Postosuchus kirkpatricki13 sites
- Stagonolepididae13 sites
- Archosauriformes12 sites
- Paratypothorax12 sites
- Smilosuchus adamanensis12 sites
- Coelacanthidae11 sites
The Paleobiology Database records 207 sites for Metoposauridae, 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
80 references- Late Triassic (Carnian and Norian) Tetrapods from the Southwestern United States79
- The tetrapod fauna of the Upper Triassic lower Chinle Group (Adamanian: latest Carnian) of the Zuni Mountains, west-central New Mexico13
- Triassic amphibians from the Rocky Mountain Region8
- The vertebrate macrofauna of the Upper Triassic (Apachean) Redonda Formation, east-central New Mexico7
- Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A.7
- Lithostratigraphy, chemostratigraphy, and vertebrate biostratigraphy of the Dockum Group (Upper Triassic), of southern Garza County, West Texas. Unpublished PhD thesis, Texas Tech University6
- Tetrapod fauna of the Upper Triassic (Revueltian) Owl Rock Formation, Chinle Group, Arizona6
- Fossil Vertebrate Collections5
- Fossil occurrences and structural disturbance in the Triassic Chinle Formation at North Stinking Springs Mountain near St. Johns, Arizona5
- Upper Triassic tetrapods from the Lucero Uplift, central New Mexico5
- Triassic vertebrate paleontology and biochronology of New Mexico4
- The Triassic system in the Dry Cimarron Valley, New Mexico, Colorado and Oklahoma4
Each of the 252 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. 68 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 Metoposauridae
- Source
- Wikipedia/Commons
- Credit
- Dmitry Bogdanov
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Metoposauridae 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 itTrematosauroidea through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Watson 1919