Archegosauroidea

Archegosauroidea is an extinct superfamily of Permian temnospondyls. The superfamily is assigned to the clade Stereospondylomorpha and is the sister taxon to the suborder Stereospondyli. It includes the families Actinodontidae and Archegosauridae, and possibly the genus Intasuchus, which is placed within the monotypic family Intasuchidae. They were fully aquatic animals, and were metabolically and physiologically more similar to fish than modern amphibians.

Archegosauroidea

ДиБгд at Russian Wikipedia · 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
TemnospondyliPBDB
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 23 million years on record.

The record covers at least 290.1 Mya to 266.9 Mya. No occurrence read is dated outside 298.9 Mya to 256.8 Mya.

Carboniferous — about 0 of 39 occurrencesPermian — about 39 of 39 occurrencesPermian300–298 Mya — about 0.2 occurrences298–297 Mya — about 0.5 occurrences297–295 Mya — about 0.5 occurrences295–294 Mya — about 0.5 occurrences294–292 Mya — about 0.5 occurrences292–291 Mya — about 0.5 occurrences291–290 Mya — about 0.4 occurrences290–288 Mya — about 0.2 occurrences288–287 Mya — about 0.2 occurrences287–285 Mya — about 0.2 occurrences285–284 Mya — about 0.2 occurrences284–282 Mya — about 0.2 occurrences282–281 Mya — about 0.2 occurrences281–279 Mya — about 0.2 occurrences279–278 Mya — about 0.2 occurrences278–276 Mya — about 0.9 occurrences276–275 Mya — about 1 occurrence275–273 Mya — about 2 occurrences273–272 Mya — about 2 occurrences272–271 Mya — about 2 occurrences271–269 Mya — about 2 occurrences269–268 Mya — about 2 occurrences268–266 Mya — about 6 occurrences266–265 Mya — about 10 occurrences265–263 Mya — about 4 occurrences263–262 Mya — about 1 occurrence262–260 Mya — about 1 occurrence260–259 Mya — about 0.7 occurrences259–257 Mya — about 0.3 occurrences257–256 Mya — about 0.1 occurrences290.1 Mya266.9 Mya299.7 Mya256 Mya

39 occurrences of Archegosauroidea 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

39 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

12 formations

Amanakskaya — 53.37°N, 52.81°EAmanakskaya — 52.26°N, 54.85°EAmanakskaya — 51.82°N, 54.99°EAmanakskaya — 51.67°N, 54.38°EAmanakskaya — 52.97°N, 53.81°EBelebei — 55.72°N, 51.40°EBelebei — 54.11°N, 54.13°EBolshekinelskaya — 52.23°N, 54.88°EBolshekinelskaya — 52.17°N, 55.19°EBolshekinelskaya — 52.63°N, 53.78°EIsheevo — 55.78°N, 48.93°EIsheevo — 55.04°N, 46.78°EPechishchi — 58.64°N, 49.85°EBaytugan — 56.01°N, 52.71°EMamal — 34.06°N, 74.94°ERio do Rasto — 30.33°S, 54.32°WBelebey — 55.71°N, 51.41°EOsinovskaya — 52.00°N, 56.54°ELower Pedra de Fogo — 5.60°S, 42.08°WKama Region Third — 55.03°N, 48.88°E

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The named rock units Archegosauroidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 occurrences have no formation on record, which is common for older literature.

Archegosauroidea and its relatives

Permian

Where Archegosauroidea and its relatives were recorded in the Permian.

Found in the same rock

137 taxa

The Paleobiology Database records 23 sites for Archegosauroidea, 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

19 references

Each of the 39 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. 7 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 Archegosauroidea

Credit
ДиБгд at Russian Wikipedia
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Archegosauroidea 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 itTemnospondyli through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. von Meyer 1857