Ischigualastia

Ischigualastia is an extinct genus of large dicynodont therapsids from the Late Triassic (Carnian) Ischigualasto Formation of Argentina. The type species and only known species, I. jenseni, was named in 1962 by C. Barry Cox, who wrote a more detailed description three years later. The species name honours James Jensen, who prepared some of the earliest fossils. There are some reports of Ischigualastia remains outside of Argentina, though these do not hold up to scrutiny.

Ischigualastia

Kentaro Ohno · CC BY 2.0 · 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
StahleckeriinaePBDB
Diet
herbivorePBDB, for Dicynodontia
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At most 6.3 million years on record.

Every occurrence read is dated to somewhere between 233.6 Mya and 227.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Triassic — about 2 of 2 occurrencesLate Triassic234–233 Mya — about 0.1 occurrences233–233 Mya — about 0.1 occurrences233–233 Mya — about 0.1 occurrences233–233 Mya — about 0.1 occurrences233–232 Mya — about 0.1 occurrences232–232 Mya — about 0.1 occurrences232–232 Mya — about 0.1 occurrences232–232 Mya — about 0.1 occurrences232–231 Mya — about 0.1 occurrences231–231 Mya — about 0.1 occurrences231–231 Mya — about 0.1 occurrences231–231 Mya — about 0.1 occurrences231–230 Mya — about 0.1 occurrences230–230 Mya — about 0.1 occurrences230–230 Mya — about 0.1 occurrences230–230 Mya — about 0.1 occurrences230–229 Mya — about 0.1 occurrences229–229 Mya — about 0.1 occurrences229–229 Mya — about 0.1 occurrences229–229 Mya — about 0.1 occurrences229–229 Mya — about 0.1 occurrences229–228 Mya — about 0.1 occurrences228–228 Mya — about 0.1 occurrences228–228 Mya — about 0.1 occurrences228–228 Mya — about 0.1 occurrences228–227 Mya — about 0.1 occurrences234.1 Mya226.8 Mya

2 occurrences of Ischigualastia 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

2 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

1 formation

Ischigualasto — 31.10°S, 68.90°WIschigualasto — 30.00°S, 68.00°W

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The named rock units Ischigualastia has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Ischigualastia and its relatives

Late Triassic

Where Ischigualastia and its relatives were recorded in the Late Triassic.

Found in the same rock

8 taxa

The Paleobiology Database records 2 sites for Ischigualastia, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

2 references

Each of the 2 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 Ischigualastia

Credit
Kentaro Ohno
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan of Ischigualastia 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 itStahleckeriinae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cox 1962