Corculum

Corculum is a genus of small saltwater clams, marine bivalve molluscs in the family Cardiidae, the cockles. They maintain Symbiodinium dinoflagellates as symbionts.

Corculum

bpmuzik · 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
FraginaePBDB
Diet
suspension feederPBDB, for Cardiidae
Life habit
infaunalPBDB, for Cardiidae
Motility
facultatively mobilePBDB, for Cardiidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 50 million years on record.

The record covers at least 66 Mya to 15.98 Mya. No occurrence read is dated outside 72.2 Mya to 11.63 Mya.

Late Cretaceous — about 1 of 4 occurrencesLate CretaceousPaleocene — about 0 of 4 occurrencesEocene — about 1 of 4 occurrencesEoceneOligocene — about 0 of 4 occurrencesMiocene — about 2 of 4 occurrencesMiocene73–71 Mya — about 0.1 occurrences71–69 Mya — about 0.3 occurrences69–67 Mya — about 0.3 occurrences67–65 Mya — about 0.2 occurrences42–40 Mya — about 0.4 occurrences40–38 Mya — about 0.6 occurrences38–36 Mya — about 0.0 occurrences17–15 Mya — about 0.6 occurrences15–13 Mya — about 1.0 occurrences13–10 Mya — about 0.4 occurrences66 Mya15.98 Mya73 Mya10 Mya

4 occurrences of Corculum on record, most of them in the Miocene. 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

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

3 formations

Lower Menkrawit — 1.50°N, 116.50°ECook Mountain — 31.20°N, 95.73°WOwl Creek — 34.76°N, 88.93°W

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The named rock units Corculum 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.

Corculum and its relatives

Miocene

Where Corculum and its relatives were recorded in the Miocene.

Found in the same rock

280 taxa

The Paleobiology Database records 2 sites for Corculum, 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

2 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 content3

Picture of Corculum

Credit
bpmuzik
Licence
CC BY 2.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Corculum hemicardium · MCZ:Mala:192739

3D model

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

Smithsonian Open Access was 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 itFraginae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Röding 1798