Tretosternon

No picture of Tretosternon was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tretosternon, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
HelochelydridaePBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Diapsida

Time the record covers

At least 6.5 million years on record.

The record covers at least 139.1 Mya to 132.6 Mya. No occurrence read is dated outside 143.1 Mya to 125.77 Mya.

Late Jurassic — about 0 of 5 occurrencesEarly Cretaceous — about 5 of 5 occurrencesEarly Cretaceous144–143 Mya — about 0.1 occurrences143–142 Mya — about 0.3 occurrences142–142 Mya — about 0.3 occurrences142–141 Mya — about 0.3 occurrences141–141 Mya — about 0.3 occurrences141–140 Mya — about 0.3 occurrences140–139 Mya — about 0.3 occurrences139–139 Mya — about 0.1 occurrences137–137 Mya — about 0.0 occurrences137–136 Mya — about 0.1 occurrences136–136 Mya — about 0.1 occurrences136–135 Mya — about 0.1 occurrences135–134 Mya — about 0.1 occurrences134–134 Mya — about 0.1 occurrences134–133 Mya — about 0.1 occurrences133–133 Mya — about 0.1 occurrences133–132 Mya — about 0.2 occurrences132–131 Mya — about 0.2 occurrences131–131 Mya — about 0.2 occurrences131–130 Mya — about 0.2 occurrences130–130 Mya — about 0.2 occurrences130–129 Mya — about 0.2 occurrences129–128 Mya — about 0.2 occurrences128–128 Mya — about 0.2 occurrences128–127 Mya — about 0.2 occurrences127–126 Mya — about 0.2 occurrences126–126 Mya — about 0.2 occurrences126–125 Mya — about 0.0 occurrences139.1 Mya132.6 Mya143.6 Mya125.3 Mya

5 occurrences of Tretosternon 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

5 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

3 formations

Weald Clay — 50.96°N, 0.12°WWeald Clay — 52.72°N, 1.44°WLulworth — 50.60°N, 1.97°WWadhurst Clay — 50.86°N, 0.44°E

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The named rock units Tretosternon 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.

Tretosternon and its relatives

Early Cretaceous

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

Found in the same rock

132 taxa

The Paleobiology Database records 5 sites for Tretosternon, 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

5 references

Each of the 5 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 content0

No picture of Tretosternon was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tretosternon, or no answer at all. This entry cannot say which.

No 3D scan of Tretosternon 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itHelochelydridae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Owen 1842