Arca biangula

Arca biangula

via iDigBio · CC BY-NC-ND · 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
ArcaPBDB
Diet
suspension feederPBDB, for Arca
Life habit
epifaunalPBDB, for Arca
Motility
stationary, attachedPBDB, for Arca
Vision
limitedPBDB, for Arcidae
Environment
lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Arcidae

Time the record covers

At least 25 million years on record.

The record covers at least 41.03 Mya to 15.98 Mya. No occurrence read is dated outside 48.07 Mya to 13.82 Mya.

Eocene — about 6 of 13 occurrencesEoceneOligocene — about 4 of 13 occurrencesOligoceneMiocene — about 3 of 13 occurrencesMiocene49–48 Mya — about 0.1 occurrences48–46 Mya — about 0.2 occurrences46–45 Mya — about 0.2 occurrences45–44 Mya — about 0.2 occurrences44–43 Mya — about 0.2 occurrences43–42 Mya — about 0.2 occurrences42–40 Mya — about 0.4 occurrences40–39 Mya — about 0.7 occurrences39–38 Mya — about 0.7 occurrences38–37 Mya — about 0.9 occurrences37–36 Mya — about 0.9 occurrences36–35 Mya — about 0.9 occurrences35–33 Mya — about 0.7 occurrences33–32 Mya — about 0.4 occurrences32–31 Mya — about 0.4 occurrences31–30 Mya — about 0.4 occurrences30–29 Mya — about 0.4 occurrences29–27 Mya — about 0.4 occurrences27–26 Mya — about 0.5 occurrences26–25 Mya — about 0.5 occurrences25–24 Mya — about 0.5 occurrences24–23 Mya — about 0.3 occurrences21–20 Mya — about 0.1 occurrences20–19 Mya — about 0.5 occurrences19–18 Mya — about 0.5 occurrences18–17 Mya — about 0.5 occurrences17–16 Mya — about 0.5 occurrences16–14 Mya — about 0.6 occurrences14–13 Mya — about 0.2 occurrences41.03 Mya15.98 Mya48.8 Mya13.1 Mya

13 occurrences of Arca biangula on record, most of them in the Eocene. 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

13 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

7 formations

Sables a Nummulites variolarius — 49.25°N, 2.50°ESelsey — 50.73°N, 0.78°WUpper Cyrena — 47.50°N, 19.08°EBurgeschleinitz — 48.63°N, 15.78°ENari — 26.14°N, 66.79°ETermofourà — 45.05°N, 7.80°EBaldissero — 45.02°N, 7.71°E

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The named rock units Arca biangula 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.

Arca biangula and its relatives

Eocene

Where Arca biangula and its relatives were recorded in the Eocene.

Found in the same rock

1,054 taxa

The Paleobiology Database records 11 sites for Arca biangula, 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

10 references

Each of the 13 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 content1

Picture of Arca biangula

Source
iDigBio
Credit
via iDigBio
Licence
CC BY-NC-ND
Commercial use
the licence does not allow it

No 3D scan of Arca biangula 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 itArca through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lamarck 1805