Barnea

Barnea is a genus of bivalves belonging to the family Pholadidae.

Barnea

Erik Veldhuis; Modified by Tom Meijer · 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
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 85 million years on record.

The record covers at least 85.7 Mya to 11.7 ka. No occurrence read is dated outside 89.8 Mya to 0 Mya.

Late Cretaceous — about 2 of 63 occurrencesLate CretaceousPaleocene — about 0 of 63 occurrencesEocene — about 3 of 63 occurrencesEoceneOligocene — about 0 of 63 occurrencesMiocene — about 9 of 63 occurrencesMiocenePliocene — about 13 of 63 occurrencesPleistocene — about 31 of 63 occurrences92–89 Mya — about 0.5 occurrences89–85 Mya — about 1 occurrence85–82 Mya — about 0.3 occurrences58–55 Mya — about 0.3 occurrences55–52 Mya — about 0.8 occurrences52–49 Mya — about 0.8 occurrences49–46 Mya — about 0.2 occurrences43–40 Mya — about 0.4 occurrences40–37 Mya — about 0.6 occurrences24–21 Mya — about 0.3 occurrences21–18 Mya — about 0.6 occurrences18–15 Mya — about 1 occurrence15–12 Mya — about 4 occurrences12–9.2 Mya — about 2 occurrences9.2–6.1 Mya — about 0.9 occurrences6.1–3.1 Mya — about 10 occurrences3.1–0 Mya — about 39 occurrences85.7 Mya11.7 ka92 Mya0 Mya

63 occurrences of Barnea 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

63 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

28 formations

Pamlico — 38.55°N, 75.08°WPamlico — 32.69°N, 80.23°WPamlico — 32.83°N, 79.94°WPamlico — 34.78°N, 76.69°WPamlico — 35.14°N, 76.77°WPamlico — 35.50°N, 76.27°WRed Crag — 51.87°N, 1.29°ERed Crag — 51.97°N, 1.35°ERed Crag — 51.85°N, 1.28°ERed Crag — 52.75°N, 1.53°EAcredale — 36.79°N, 76.17°WTalbot — 38.07°N, 76.36°WTalbot — 38.32°N, 76.48°WMichoud — 30.05°N, 89.96°WWaccamaw — 34.33°N, 78.20°WWaccamaw — 34.29°N, 78.51°WRedding — 40.68°N, 122.02°WNorfolk — 36.92°N, 76.49°WHatchetigbee Bluff — 31.93°N, 88.06°WMontello conglomerate — 46.22°N, 12.80°EBlackheath Beds — 51.43°N, 0.15°ENew Orleans Barrier Trend — 30.05°N, 89.96°WYorktown — 35.51°N, 77.62°WTomioka — 42.77°N, 143.02°EMonte Leon Fm — 50.37°S, 69.05°WVindobonian Marl — 36.00°N, 51.18°EKaranga — 36.63°N, 52.20°ECalvert — 38.64°N, 76.52°WLillo — 51.25°N, 4.28°ECoralline Crag — 52.75°N, 1.53°EWaiomio — 40.03°S, 175.48°EAkasawa Silt — 34.67°N, 137.25°EToshima Sand — 34.62°N, 137.22°ESakishima — 34.37°N, 136.82°E

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The named rock units Barnea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 further formations hold fewer occurrences each and are not listed. 18 occurrences have no formation on record, which is common for older literature.

Barnea and its relatives

Pleistocene

Where Barnea and its relatives were recorded in the Pleistocene.

Found in the same rock

1,880 taxa

The Paleobiology Database records 39 sites for Barnea, 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

33 references

Each of the 63 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. 21 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 Barnea

Credit
Erik Veldhuis; Modified by Tom Meijer
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
Barnea truncata · USNM:IZ:USNM 1409682

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.

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 itPholadinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leach 1826