Tchoiria

Tchoiria () is a genus of neochoristoderan reptile from the Early Cretaceous of Mongolia. The name Tchoiria comes from the city of Choir which is nearby to where the holotype was found. Tchoiria is thought to have a similar diet to another neochoristoderan reptile, Champsosaurus, due to morphology of the skull. It would hunt in freshwater environments, like the living gharials, where it would prey on many different types of fish and turtles.

Tchoiria

Rodrigo Mundaca · CC BY-SA 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
NeochoristoderaPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At least 3.1 million years on record.

The record covers at least 113.2 Mya to 110.1 Mya. No occurrence read is dated outside 121.4 Mya to 100.5 Mya.

Early Cretaceous — about 3 of 3 occurrencesEarly CretaceousLate Cretaceous — about 0 of 3 occurrences122–121 Mya — about 0.0 occurrences121–120 Mya — about 0.1 occurrences120–120 Mya — about 0.1 occurrences120–119 Mya — about 0.1 occurrences119–118 Mya — about 0.1 occurrences118–118 Mya — about 0.1 occurrences118–117 Mya — about 0.1 occurrences117–116 Mya — about 0.1 occurrences116–115 Mya — about 0.1 occurrences115–115 Mya — about 0.1 occurrences115–114 Mya — about 0.1 occurrences114–113 Mya — about 0.1 occurrences110–109 Mya — about 0.1 occurrences109–109 Mya — about 0.2 occurrences109–108 Mya — about 0.2 occurrences108–107 Mya — about 0.2 occurrences107–107 Mya — about 0.2 occurrences107–106 Mya — about 0.2 occurrences106–105 Mya — about 0.2 occurrences105–104 Mya — about 0.2 occurrences104–104 Mya — about 0.2 occurrences104–103 Mya — about 0.2 occurrences103–102 Mya — about 0.2 occurrences102–101 Mya — about 0.2 occurrences101–101 Mya — about 0.2 occurrences101–100 Mya — about 0.0 occurrences113.2 Mya110.1 Mya121.9 Mya100 Mya

3 occurrences of Tchoiria on record, most of them in the Early Cretaceous. 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

3 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

Khuren Dukh — 45.85°N, 108.40°E

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The named rock units Tchoiria has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Tchoiria and its relatives

Early Cretaceous

Where Tchoiria and its relatives were recorded in the Early Cretaceous.

Found in the same rock

16 taxa

The Paleobiology Database records 3 sites for Tchoiria, 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

3 references

Each of the 3 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 Tchoiria

Credit
Rodrigo Mundaca
Licence
CC BY-SA 2.0
Commercial use
the licence allows it

No 3D scan of Tchoiria 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 itNeochoristodera through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Efimov 1975