Petricolaria cognata

Petricolaria cognata

via iDigBio · CC0 · via iDigBio. 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
Petricola (Petricolaria)PBDB
Diet
suspension feederPBDB, for Petricola
Life habit
boringPBDB, for Petricola
Motility
stationaryPBDB, for Petricola
Vision
blindPBDB, for Bivalvia

Time the record covers

At most 118 thousand years on record.

Every occurrence read is dated to somewhere between 129 ka and 11.7 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pleistocene — about 8 of 8 occurrencesPleistoceneHolocene — about 0 of 8 occurrences147 ka–126 ka Mya — about 0.2 occurrences126 ka–105 ka Mya — about 1 occurrence105 ka–84 ka Mya — about 1 occurrence84 ka–63 ka Mya — about 1 occurrence63 ka–42 ka Mya — about 1 occurrence42 ka–21 ka Mya — about 1 occurrence21 ka–0 Mya — about 0.6 occurrences629 ka0 Mya

8 occurrences of Petricolaria cognata on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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

8 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

Palos Verdes Sand — 33.71°N, 118.27°W

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The named rock units Petricolaria cognata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Petricolaria cognata and its relatives

Pleistocene

Where Petricolaria cognata and its relatives were recorded in the Pleistocene.

Found in the same rock

295 taxa

The Paleobiology Database records 8 sites for Petricolaria cognata, 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 8 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 content1

Picture of Petricolaria cognata

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Petricolaria cognata 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.

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

Keep going

What may have been alongside itPetricola (Petricolaria) through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Adams 1852)