Zirfaea

Zirfaea

Erik Veldhuis · CC BY-SA 3.0 · 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
PholadinaePBDB
Diet
suspension feederPBDB, for Pholadidae
Life habit
boringPBDB, for Pholadidae
Motility
stationaryPBDB, for Pholadidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 22 million years on record.

The record covers at least 23.04 Mya to 129 ka. No occurrence read is dated outside 27.3 Mya to 11.7 ka.

Oligocene — about 1 of 55 occurrencesOligoceneMiocene — about 9 of 55 occurrencesMiocenePliocene — about 8 of 55 occurrencesPliocenePleistocene — about 37 of 55 occurrencesPleistocene28–27 Mya — about 0.1 occurrences27–26 Mya — about 0.2 occurrences26–25 Mya — about 0.2 occurrences25–24 Mya — about 0.2 occurrences24–23 Mya — about 0.2 occurrences23–22 Mya — about 0.4 occurrences22–21 Mya — about 0.4 occurrences21–20 Mya — about 0.4 occurrences20–19 Mya — about 0.5 occurrences19–19 Mya — about 0.5 occurrences19–18 Mya — about 0.5 occurrences18–17 Mya — about 0.5 occurrences17–16 Mya — about 0.5 occurrences16–15 Mya — about 0.4 occurrences15–14 Mya — about 0.4 occurrences14–13 Mya — about 0.2 occurrences13–12 Mya — about 0.2 occurrences12–11 Mya — about 0.3 occurrences11–10 Mya — about 0.3 occurrences10–9.3 Mya — about 0.3 occurrences9.3–8.4 Mya — about 0.3 occurrences8.4–7.4 Mya — about 0.3 occurrences7.4–6.5 Mya — about 1 occurrence6.5–5.6 Mya — about 1 occurrence5.6–4.6 Mya — about 1 occurrence4.6–3.7 Mya — about 1 occurrence3.7–2.8 Mya — about 5 occurrences2.8–1.9 Mya — about 5 occurrences1.9–928 ka Mya — about 1 occurrence928 ka–0 Mya — about 32 occurrences23.04 Mya129 ka27.8 Mya0 Mya

55 occurrences of Zirfaea 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

55 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

21 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°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.73°N, 118.29°WPalos Verdes Sand — 33.66°N, 117.94°WRed Crag — 51.97°N, 1.35°ERed Crag — 51.85°N, 1.28°ERed Crag — 52.75°N, 1.53°EPancho Rico — 36.02°N, 120.88°WPancho Rico — 36.13°N, 120.73°WLillo — 51.25°N, 4.28°ECareaga Sandstone — 34.74°N, 120.41°WCareaga Sandstone — 34.82°N, 120.45°WVaqueros — 34.04°N, 118.88°WVaqueros — 34.38°N, 118.84°WMonterey — 35.99°N, 120.30°WIl'inskaya — 57.78°N, 158.58°ECoralline Crag — 52.75°N, 1.53°EHolderness — 54.10°N, 0.21°WSespe — 33.77°N, 117.68°WBattery — 41.76°N, 124.20°WMerced — 37.39°N, 122.17°WWeybourne Crag — 52.90°N, 1.37°EShimo — 35.51°N, 135.51°EWexford Gravels — 52.43°N, 6.33°WSooke — 48.38°N, 123.90°WPalos Verdes — 33.63°N, 117.90°WEtchegoin — 36.19°N, 120.64°WSan Diego — 32.54°N, 117.11°W

Loading coastlines…

The named rock units Zirfaea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 21 occurrences have no formation on record, which is common for older literature.

Zirfaea and its relatives

Pleistocene

Where Zirfaea and its relatives were recorded in the Pleistocene.

Found in the same rock

1,433 taxa

The Paleobiology Database records 41 sites for Zirfaea, 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

35 references

Each of the 55 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. 23 further references are not listed. 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 Zirfaea

Credit
Erik Veldhuis
Licence
CC BY-SA 3.0
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

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.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1842