Mastodonsauridae
Mastodonsauridae is a family of capitosauroid temnospondyls. Fossils belonging to this family have been found in North America, Greenland, Europe, Asia, and Australia. The family Capitosauridae is synonymous with Mastodonsauridae.

Ghedoghedo · 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
- CapitosauroideaPBDB
- 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 45 million years on record.
The record covers at least 250.8 Mya to 205.7 Mya. No occurrence read is dated outside 251.902 Mya to 201.4 Mya.
67 occurrences of Mastodonsauridae on record, most of them in the Middle 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
67 occurrencesThese 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
34 formations
- Burgersdorp Formation · Beaufort Group9
- Kongressfjellet Formation5
- Otter Sandstone Formation · Sherwood Sandstone Group4
- Erfurt Formation · Keuper Group4
- Moenkopi Formation3
- Elliot Formation · Stormberg Group3
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The named rock units Mastodonsauridae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed. 9 occurrences have no formation on record, which is common for older literature.
Mastodonsauridae and its relatives
Middle TriassicWhere Mastodonsauridae and its relatives were recorded in the Middle Triassic.
Found in the same rock
212 taxa- Archosauria6 sites
- Xenotosuchus africanus5 sites
- Mastodonsaurus giganteus4 sites
- Tatrasuchus wildi4 sites
- Temnospondyli4 sites
- Aphaneramma rostratum3 sites
- Axelia robusta3 sites
- Dicynodontia3 sites
- Kestrosaurus3 sites
- Lissodus3 sites
- Plagiosuchus pustuliferus3 sites
- Procolophonidae3 sites
- Pygopterus degeeri3 sites
- Saurichthys3 sites
- Saurichthys (Lepidosaurichthys) elongatus3 sites
- Saurichthys (Lepidosaurichthys) ornatus3 sites
- Sauropodomorpha3 sites
- Scleracanthus asper3 sites
- Trematolestes hagdorni3 sites
- Wellesaurus peabodyi3 sites
- Actinistia2 sites
- Archosauriformes2 sites
- Batrachotomus kupferzellensis2 sites
- Birgeria mougeoti2 sites
The Paleobiology Database records 61 sites for Mastodonsauridae, 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
41 references- Tetrapod localities from the Triassic of the SE of European Russia6
- The Triassic labyrinthodonts from Germany5
- Re-evaluation of Kestrosaurus Haughton, a capitosaurid temnospondyl amphibian from the Upper Beaufort Group of South Africa4
- Fossils from the Elliot and Clarens Formations (Karoo Sequence) of the northeastern Cape, Orange Free State and Lesotho, and a suggested biozonation based on tetrapods4
- On the morphology of the lower jaw of Stegocephalia with special reference to Eotriassic stegocephalians from Spitzbergen. I. Descriptive Part4
- The Moenkopi Formation along the Little Colorado River in eastern Arizona3
- New tempospondyl amphibians from the basal Triassic of the Obshchii Syrt Highland, Eastern Europe2
- A giant skull of the temnospondyl Xenotosuchus africanus from the Middle Triassic of South Africa and its ontogenetic implications2
- A systematic revision and phylogenetic analysis of Triassic mastodonsauroids (Temnospondyli: Stereospondyli)2
- Giant temnospondyl amphibians from the Early to Middle Triassic Narrabeen Group of the Sydney Basin, New South Wales, Australia2
- Investigations in South African fossil reptiles and amphibians (Part 13)2
- Über die Stegocephalen aus der Trias Spitzbergens2
Each of the 67 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. 29 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 Mastodonsauridae
- Source
- Wikipedia/Commons
- Credit
- Ghedoghedo
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Mastodonsauridae 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 itCapitosauroidea through timeFormations of the Middle TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Lydekker 1885