Diadectomorpha

Diadectomorpha is a clade of large tetrapods that lived in Euramerica during the Carboniferous and Early Permian periods and in Asia during Late Permian (Wuchiapingian), They have typically been classified as advanced reptiliomorphs positioned close to, but outside of the clade Amniota, though some recent research has recovered them as the sister group to the traditional Synapsida within Amniota, based on inner ear anatomy and cladistic analyses. They include both large carnivorous and even larger herbivorous forms, some semi-aquatic and others fully terrestrial. The diadectomorphs seem to have originated during late Mississippian times, although they only became common after the Carboniferous rainforest collapse and flourished during the Late Pennsylvanian and Early Permian periods.

Diadectomorpha

Ghedoghedo · Public Domain · 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
CotylosauriaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
brackish,freshwater,terrestrialPBDB, for Tetrapoda

Time the record covers

At least 47 million years on record.

The record covers at least 307.4 Mya to 259.857 Mya. No occurrence read is dated outside 314.6 Mya to 251.902 Mya.

Carboniferous — about 12 of 100 occurrencesCarboniferousPermian — about 88 of 100 occurrencesPermianEarly Triassic — about 0 of 100 occurrences316–314 Mya — about 0.1 occurrences314–312 Mya — about 0.3 occurrences312–309 Mya — about 0.3 occurrences309–307 Mya — about 0.3 occurrences307–305 Mya — about 2 occurrences305–303 Mya — about 4 occurrences303–301 Mya — about 3 occurrences301–298 Mya — about 4 occurrences298–296 Mya — about 8 occurrences296–294 Mya — about 8 occurrences294–292 Mya — about 9 occurrences292–290 Mya — about 9 occurrences290–288 Mya — about 11 occurrences288–285 Mya — about 11 occurrences285–283 Mya — about 8 occurrences283–281 Mya — about 5 occurrences281–279 Mya — about 5 occurrences279–277 Mya — about 5 occurrences277–275 Mya — about 5 occurrences275–272 Mya — about 0.6 occurrences272–270 Mya — about 0.2 occurrences270–268 Mya — about 0.2 occurrences268–266 Mya — about 0.2 occurrences266–264 Mya — about 0.1 occurrences264–262 Mya — about 0.1 occurrences262–259 Mya — about 0.3 occurrences259–257 Mya — about 0.7 occurrences257–255 Mya — about 0.7 occurrences255–253 Mya — about 0.5 occurrences253–251 Mya — about 0.1 occurrences307.4 Mya259.857 Mya316 Mya251 Mya

100 occurrences of Diadectomorpha 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

100 occurrences

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

31 formations

Cutler — 37.17°N, 109.85°WCutler — 37.03°N, 110.06°WCutler — 36.31°N, 106.35°WCutler — 38.02°N, 108.05°WCutler — 36.16°N, 106.65°WArroyo — 33.77°N, 99.22°WArroyo — 33.70°N, 99.27°WArroyo — 33.59°N, 99.26°WArroyo — 33.73°N, 99.36°WArroyo — 33.97°N, 99.20°WBelle Plains — 33.74°N, 98.90°WBelle Plains — 33.87°N, 98.84°WBelle Plains — 33.69°N, 99.02°WWaggoner Ranch — 33.82°N, 98.69°WWaggoner Ranch — 33.76°N, 99.14°WAdmiral — 33.62°N, 98.86°WAdmiral — 33.82°N, 98.69°WAbo/Cutler — 35.72°N, 106.78°WAbo/Cutler — 36.28°N, 106.36°WAbo/Cutler — 36.18°N, 106.67°WAbo/Cutler — 36.16°N, 106.64°WAbo/Cutler — 34.17°N, 106.75°WVale — 32.45°N, 99.73°WVale — 32.13°N, 99.75°WVale — 32.23°N, 99.83°WVale — 33.67°N, 99.78°WTambach — 50.81°N, 10.62°ESangre de Cristo — 38.47°N, 105.86°WSangre de Cristo — 34.64°N, 107.18°WEl Cobre Canyon — 36.14°N, 106.62°WAbo — 35.77°N, 106.69°WAbo — 34.64°N, 107.18°WAbo — 38.76°N, 107.05°WClyde — 33.77°N, 99.10°WPutnam — 33.60°N, 98.63°WPetrolia — 33.69°N, 99.02°WPetrolia — 33.64°N, 98.90°WNocona — 33.68°N, 98.70°WNocona — 33.72°N, 98.34°WArroyo del Agua — 36.12°N, 106.66°WArroyo del Agua — 36.12°N, 106.64°WArcher City — 33.58°N, 98.65°WArcher City — 33.67°N, 98.69°WGarber — 34.30°N, 98.60°WGarber — 36.66°N, 97.69°WKildare Capes — 46.09°N, 62.92°WAda — 34.93°N, 96.70°WLueders — 33.78°N, 99.14°WShangshihezi — 34.92°N, 112.37°EEskridge — 40.15°N, 95.90°WGreene — 39.72°N, 80.90°W

Loading coastlines…

The named rock units Diadectomorpha has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 further formations hold fewer occurrences each and are not listed. 7 occurrences have no formation on record, which is common for older literature.

Diadectomorpha and its relatives

Permian

Where Diadectomorpha and its relatives were recorded in the Permian.

Found in the same rock

278 taxa

The Paleobiology Database records 71 sites for Diadectomorpha, 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

42 references

Each of the 100 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. 30 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 Diadectomorpha

Credit
Ghedoghedo
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Diadectomorpha 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 itCotylosauria through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Watson 1917)