Cyrena

Searched as Cyrena (Cyrena) convexa bolyaiana n. ssp.. The Paleobiology Database treats Cyrena as the accepted name.

Corbicula is a genus of freshwater and brackish water clams, aquatic bivalve mollusks in the family Cyrenidae, the basket clams. The genus name is the Neo-Latin diminutive of Latin corbis, a basket, referring to the shape and ribs of the shell.

Cyrena

Yaca2671 · CC BY-SA 3.0 · 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
CyrenidaePBDB
Diet
suspension feederPBDB, for Venerida
Life habit
infaunalPBDB, for Venerida
Motility
facultatively mobilePBDB, for Venerida
Vision
blindPBDB, for Bivalvia

Time the record covers

At most 6.6 million years on record.

The one occurrence read is dated to somewhere between 33.9 Mya and 27.3 Mya, which is a dating window rather than a span.

Eocene — about 0 of 1 occurrenceOligocene — about 1 of 1 occurrenceOligocene34–34 Mya — about 0.0 occurrences34–34 Mya — about 0.0 occurrences34–33 Mya — about 0.0 occurrences33–33 Mya — about 0.0 occurrences33–33 Mya — about 0.0 occurrences33–33 Mya — about 0.0 occurrences33–32 Mya — about 0.0 occurrences32–32 Mya — about 0.0 occurrences32–32 Mya — about 0.0 occurrences32–32 Mya — about 0.0 occurrences32–31 Mya — about 0.0 occurrences31–31 Mya — about 0.0 occurrences31–31 Mya — about 0.0 occurrences31–31 Mya — about 0.0 occurrences31–30 Mya — about 0.0 occurrences30–30 Mya — about 0.0 occurrences30–30 Mya — about 0.0 occurrences30–30 Mya — about 0.0 occurrences30–29 Mya — about 0.0 occurrences29–29 Mya — about 0.0 occurrences29–29 Mya — about 0.0 occurrences29–29 Mya — about 0.0 occurrences29–28 Mya — about 0.0 occurrences28–28 Mya — about 0.0 occurrences28–28 Mya — about 0.0 occurrences28–28 Mya — about 0.0 occurrences28–27 Mya — about 0.0 occurrences27–27 Mya — about 0.0 occurrences34.4 Mya26.8 Mya

1 occurrence of Cyrena 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

1 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

1 formation

Mera — 47.40°N, 23.85°E

Loading coastlines…

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

Cyrena and its relatives

Oligocene

Where Cyrena and its relatives were recorded in the Oligocene.

Found in the same rock

1,107 taxa

The Paleobiology Database records 99 sites for Cyrena, 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

1 reference

Each of the 1 occurrence 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 content1

Picture of Cyrena

Credit
Yaca2671
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Cyrena 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.

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 itCyrenidae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lamarck