Cyclocardia

Searched as Cyclocardia (Cyclocardia) depressa. The Paleobiology Database treats Cyclocardia as the accepted name.

Cyclocardia

Uncredited · via Wikidata/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
CarditidaePBDB
Diet
suspension feederPBDB
Life habit
semi-infaunalPBDB
Motility
facultatively mobilePBDB
Vision
blindPBDB, for Crassatelloidea
Environment
marinePBDB, for Crassatelloidea

Time the record covers

At most 4.3 million years on record.

Every occurrence read is dated to somewhere between 27.3 Mya and 23.04 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Oligocene — about 2 of 2 occurrencesOligoceneMiocene — about 0 of 2 occurrences27–27 Mya — about 0.0 occurrences27–27 Mya — about 0.1 occurrences27–27 Mya — about 0.1 occurrences27–27 Mya — about 0.1 occurrences27–27 Mya — about 0.1 occurrences27–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences25–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–24 Mya — about 0.1 occurrences24–23 Mya — about 0.1 occurrences23–23 Mya — about 0.1 occurrences23–23 Mya — about 0.1 occurrences23–23 Mya — about 0.0 occurrences27.8 Mya22.5 Mya

2 occurrences of Cyclocardia on record, most of them in the Oligocene. 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

2 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

Brejning Clay — 56.17°N, 9.75°EVejle Fjord — 55.18°N, 11.88°E

Loading coastlines…

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

Cyclocardia and its relatives

Oligocene

Where Cyclocardia and its relatives were recorded in the Oligocene.

Found in the same rock

2,636 taxa

The Paleobiology Database records 278 sites for Cyclocardia, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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 2 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content2

Picture of Cyclocardia

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows 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.

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

Keep going

What may have been alongside itCarditidae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1867)