Amphitomaria

No picture of Amphitomaria 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 Amphitomaria, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
DiscohelicidaePBDB
Diet
grazerPBDB, for Vetigastropoda
Life habit
epifaunalPBDB, for Vetigastropoda
Motility
actively mobilePBDB, for Vetigastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 22 million years on record.

The record covers at least 233.6 Mya to 211.18 Mya. No occurrence read is dated outside 237 Mya to 205.7 Mya.

Middle Triassic — about 0 of 4 occurrencesLate Triassic — about 4 of 4 occurrencesLate Triassic238–237 Mya — about 0.4 occurrences237–235 Mya — about 1.0 occurrences235–234 Mya — about 1.0 occurrences234–233 Mya — about 0.7 occurrences212–210 Mya — about 0.1 occurrences210–209 Mya — about 0.2 occurrences209–208 Mya — about 0.2 occurrences208–207 Mya — about 0.2 occurrences207–206 Mya — about 0.2 occurrences206–205 Mya — about 0.1 occurrences233.6 Mya211.18 Mya237.6 Mya205.1 Mya

4 occurrences of Amphitomaria 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

4 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

2 formations

Cassian — 46.58°N, 12.23°EMartin Bridge Limestone — 46.33°N, 116.73°W

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

Amphitomaria and its relatives

Late Triassic

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

Found in the same rock

125 taxa

The Paleobiology Database records 4 sites for Amphitomaria, 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

3 references

Each of the 4 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 Amphitomaria 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 Amphitomaria, or no answer at all. This entry cannot say which.

No 3D scan of Amphitomaria was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itDiscohelicidae through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.