Zirfaea crispata

Zirfaea crispata

Eric A. Lazo-Wasem · CC0 · 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
ZirfaeaPBDB
Diet
suspension feederPBDB, for Pholadidae
Life habit
boringPBDB, for Pholadidae
Motility
stationaryPBDB, for Pholadidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 3.4 million years on record.

The record covers at least 3.6 Mya to 129 ka. No occurrence read is dated outside 5.333 Mya to 11.7 ka.

Miocene — about 0 of 16 occurrencesPliocene — about 6 of 16 occurrencesPliocenePleistocene — about 10 of 16 occurrencesPleistoceneHolocene — about 0 of 16 occurrences5.4–5.3 Mya — about 0.1 occurrences5.3–5.1 Mya — about 0.2 occurrences5.1–4.9 Mya — about 0.2 occurrences4.9–4.7 Mya — about 0.2 occurrences4.7–4.5 Mya — about 0.2 occurrences4.5–4.3 Mya — about 0.2 occurrences4.3–4.1 Mya — about 0.2 occurrences4.1–3.9 Mya — about 0.2 occurrences3.9–3.7 Mya — about 0.2 occurrences3.7–3.5 Mya — about 0.5 occurrences3.5–3.3 Mya — about 0.8 occurrences3.3–3.1 Mya — about 0.8 occurrences3.1–2.9 Mya — about 0.8 occurrences2.9–2.7 Mya — about 0.8 occurrences2.7–2.5 Mya — about 0.7 occurrences2.5–2.3 Mya — about 0.4 occurrences2.3–2.1 Mya — about 0.4 occurrences2.1–1.9 Mya — about 0.4 occurrences1.9–1.8 Mya — about 0.4 occurrences1.8–1.6 Mya — about 0.2 occurrences1.6–1.4 Mya — about 0.2 occurrences1.4–1.2 Mya — about 0.2 occurrences1.2–972 ka Mya — about 0.2 occurrences972 ka–778 ka Mya — about 0.2 occurrences778 ka–583 ka Mya — about 0.4 occurrences583 ka–389 ka Mya — about 0.4 occurrences389 ka–194 ka Mya — about 0.4 occurrences194 ka–0 Mya — about 6 occurrences3.6 Mya129 ka5.8 Mya0 Mya

16 occurrences of Zirfaea crispata 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

16 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

8 formations

Presumpscot — 43.84°N, 70.10°WPresumpscot — 44.23°N, 69.78°WPresumpscot — 44.91°N, 66.99°WPresumpscot — 43.64°N, 70.26°WRed Crag — 51.97°N, 1.35°ERed Crag — 51.85°N, 1.28°ERed Crag — 52.75°N, 1.53°ELillo — 51.25°N, 4.28°ECoralline Crag — 52.75°N, 1.53°EHolderness — 54.10°N, 0.21°WWeybourne Crag — 52.90°N, 1.37°EWexford Gravels — 52.43°N, 6.33°WEtchegoin — 36.19°N, 120.64°W

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The named rock units Zirfaea crispata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Zirfaea crispata and its relatives

Pleistocene

Where Zirfaea crispata and its relatives were recorded in the Pleistocene.

Found in the same rock

418 taxa

The Paleobiology Database records 8 sites for Zirfaea crispata, 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

9 references

Each of the 16 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 Zirfaea crispata

Credit
Eric A. Lazo-Wasem
Licence
CC0
Commercial use
the licence allows it

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Zirfaea crispata · USNM:IZ:USNM 462635

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

Keep going

What may have been alongside itZirfaea through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1758)