Abra aequalis

Abra aequalis, also known as the Atlantic abra, is a species of marine bivalve found in the west Atlantic Ocean.

Abra aequalis

(c) Jacob Weston, some rights reserved (CC BY) · CC BY 4.0 · 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
AbraPBDB
Diet
deposit feeder, suspension feederPBDB, for Abra
Life habit
infaunalPBDB, for Abra
Motility
facultatively mobilePBDB, for Abra
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 3.5 million years on record.

The record covers at least 3.6 Mya to 11.7 ka. No occurrence read is dated outside 5.333 Mya to 0 Mya.

Miocene — about 0 of 72 occurrencesPliocene — about 20 of 72 occurrencesPliocenePleistocene — about 40 of 72 occurrencesPleistoceneHolocene — about 12 of 72 occurrences5.4–5.3 Mya — about 0.6 occurrences5.3–5.1 Mya — about 1 occurrence5.1–4.9 Mya — about 1 occurrence4.9–4.7 Mya — about 1 occurrence4.7–4.5 Mya — about 1 occurrence4.5–4.3 Mya — about 1 occurrence4.3–4.1 Mya — about 1 occurrence4.1–3.9 Mya — about 1 occurrence3.9–3.7 Mya — about 1 occurrence3.7–3.5 Mya — about 1 occurrence3.5–3.3 Mya — about 1 occurrence3.3–3.1 Mya — about 1 occurrence3.1–2.9 Mya — about 1 occurrence2.9–2.7 Mya — about 1 occurrence2.7–2.5 Mya — about 2 occurrences2.5–2.3 Mya — about 2 occurrences2.3–2.1 Mya — about 2 occurrences2.1–1.9 Mya — about 2 occurrences1.9–1.8 Mya — about 2 occurrences1.8–1.6 Mya — about 2 occurrences1.6–1.4 Mya — about 2 occurrences1.4–1.2 Mya — about 2 occurrences1.2–972 ka Mya — about 2 occurrences972 ka–778 ka Mya — about 2 occurrences778 ka–583 ka Mya — about 0.9 occurrences583 ka–389 ka Mya — about 0.8 occurrences389 ka–194 ka Mya — about 0.8 occurrences194 ka–0 Mya — about 28 occurrences3.6 Mya11.7 ka5.8 Mya0 Mya

72 occurrences of Abra aequalis 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

72 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

18 formations

Morne l'Enfer — 10.23°N, 61.63°WJames City — 35.28°N, 76.65°WJames City — 35.04°N, 76.99°WWaccamaw — 34.56°N, 78.49°WWaccamaw — 34.29°N, 78.51°WWaccamaw — 34.33°N, 78.20°WWaccamaw — 34.17°N, 78.60°WHorry Clay — 34.97°N, 76.97°WHorry Clay — 33.69°N, 78.89°WCaloosahatchee — 26.89°N, 82.01°WCaloosahatchee — 26.45°N, 80.86°WCaloosahatchee — 27.77°N, 82.68°WBermont — 26.89°N, 82.01°WBermont — 26.68°N, 80.67°WFort Thompson — 27.06°N, 82.26°WFort Thompson — 26.80°N, 81.37°WChowan RIver — 35.28°N, 76.65°WChowan RIver — 36.05°N, 76.73°WDuplin — 34.90°N, 78.05°WDuplin — 34.62°N, 79.01°WDuplin — 34.50°N, 79.11°WNew Orleans Barrier Trend — 30.05°N, 89.96°WMichoud — 30.05°N, 89.96°WAcredale — 36.79°N, 76.17°WYorktown — 35.51°N, 77.62°WJackson Bluff — 30.43°N, 84.57°WCanepatch — 33.83°N, 78.89°WPamlico — 32.69°N, 80.23°WPamlico — 35.59°N, 76.23°WNorfolk — 36.92°N, 76.49°WMount Hope — 9.33°N, 79.90°W

Loading coastlines…

The named rock units Abra aequalis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.

Abra aequalis and its relatives

Pleistocene

Where Abra aequalis and its relatives were recorded in the Pleistocene.

Found in the same rock

1,363 taxa

The Paleobiology Database records 57 sites for Abra aequalis, 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

24 references

Each of the 72 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. 12 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 content1

Picture of Abra aequalis

Credit
(c) Jacob Weston, some rights reserved (CC BY)
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Abra aequalis 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.

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 itAbra through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Say 1822)