Crassatina

Crassatina is a genus of saltwater clams, marine bivalve molluscs in the family Crassatellidae of the order Carditida.

Crassatina

Manuel CABALLER · CC BY 4.0 · 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
CrassatellinaePBDB
Diet
suspension feederPBDB, for Crassatellidae
Life habit
shallow infaunalPBDB, for Crassatellidae
Motility
facultatively mobilePBDB, for Crassatellidae
Vision
blindPBDB, for Crassatelloidea
Environment
marinePBDB, for Crassatelloidea

Time the record covers

At least 50 million years on record.

The record covers at least 56 Mya to 5.333 Mya. No occurrence read is dated outside 66 Mya to 2.58 Mya.

Late Cretaceous — about 0 of 30 occurrencesPaleocene — about 1 of 30 occurrencesPaleoceneEocene — about 14 of 30 occurrencesEoceneOligocene — about 5 of 30 occurrencesOligoceneMiocene — about 6 of 30 occurrencesMiocenePliocene — about 4 of 30 occurrencesPleistocene — about 0 of 30 occurrences67–65 Mya — about 0.1 occurrences65–63 Mya — about 0.2 occurrences63–61 Mya — about 0.2 occurrences61–58 Mya — about 0.2 occurrences58–56 Mya — about 0.2 occurrences56–54 Mya — about 0.0 occurrences50–47 Mya — about 0.4 occurrences47–45 Mya — about 2 occurrences45–43 Mya — about 2 occurrences43–41 Mya — about 2 occurrences41–39 Mya — about 0.7 occurrences39–36 Mya — about 3 occurrences36–34 Mya — about 5 occurrences34–32 Mya — about 2 occurrences32–30 Mya — about 2 occurrences30–28 Mya — about 2 occurrences28–25 Mya — about 0.3 occurrences17–15 Mya — about 2 occurrences15–12 Mya — about 3 occurrences12–10 Mya — about 0.6 occurrences5.7–3.5 Mya — about 3 occurrences3.5–1.3 Mya — about 1 occurrence56 Mya5.333 Mya67 Mya1 Mya

30 occurrences of Crassatina on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

30 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

9 formations

Falun de Jeurs — 48.48°N, 2.23°EBanc à verrins — 48.85°N, 1.94°EDnieper Beds — 48.45°N, 35.15°EMandrikovka — 48.45°N, 34.98°ESelsey — 50.73°N, 0.78°WFalun d'Auvers-Saint-Georges — 47.40°N, 4.45°EGetkilninskaya — 62.50°N, 165.00°EAlexandria — 33.82°S, 25.65°EBaden — 46.10°N, 18.30°E

Loading coastlines…

The named rock units Crassatina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Crassatina and its relatives

Eocene

Where Crassatina and its relatives were recorded in the Eocene.

Found in the same rock

806 taxa

The Paleobiology Database records 21 sites for Crassatina, 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

10 references

Each of the 30 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 content2

Picture of Crassatina

Credit
Manuel CABALLER
Licence
CC BY 4.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

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 itCrassatellinae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kobelt 1881