Acila

Acila is a genus of marine bivalves in the family Nuculidae. Acila fossils have been found dating back to 113.0 Ma ago.

Acila

EcologyWA · CC BY 2.0 · 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
Also called
divaricate nutclamPBDB
Sits inside
NuculidaePBDB
Diet
deposit feeder, suspension feederPBDB, for Nuculidae
Life habit
infaunalPBDB, for Nuculidae
Motility
facultatively mobilePBDB, for Nuculidae
Vision
blindPBDB, for Bivalvia
Environment
coastal,inner shelf,outer shelf,oceanicPBDB, for Nuculidae

Time the record covers

At least 113 million years on record.

The record covers at least 113.2 Mya to 129 ka. No occurrence read is dated outside 121.4 Mya to 11.7 ka.

Early Cretaceous — about 6 of 638 occurrencesEarly CretaceousLate Cretaceous — about 115 of 638 occurrencesLate CretaceousPaleocene — about 27 of 638 occurrencesEocene — about 100 of 638 occurrencesEoceneOligocene — about 152 of 638 occurrencesOligoceneMiocene — about 133 of 638 occurrencesMiocenePliocene — about 57 of 638 occurrencesPleistocene — about 49 of 638 occurrences124–120 Mya — about 0.2 occurrences120–116 Mya — about 0.5 occurrences116–111 Mya — about 1.0 occurrences111–107 Mya — about 0.8 occurrences107–103 Mya — about 2 occurrences103–99 Mya — about 4 occurrences99–95 Mya — about 8 occurrences95–91 Mya — about 6 occurrences91–87 Mya — about 6 occurrences87–83 Mya — about 22 occurrences83–78 Mya — about 18 occurrences78–74 Mya — about 18 occurrences74–70 Mya — about 17 occurrences70–66 Mya — about 16 occurrences66–62 Mya — about 10 occurrences62–58 Mya — about 10 occurrences58–54 Mya — about 15 occurrences54–50 Mya — about 15 occurrences50–45 Mya — about 14 occurrences45–41 Mya — about 14 occurrences41–37 Mya — about 18 occurrences37–33 Mya — about 39 occurrences33–29 Mya — about 41 occurrences29–25 Mya — about 67 occurrences25–21 Mya — about 44 occurrences21–17 Mya — about 16 occurrences17–12 Mya — about 42 occurrences12–8.3 Mya — about 37 occurrences8.3–4.1 Mya — about 43 occurrences4.1–0 Mya — about 90 occurrences113.2 Mya129 ka124 Mya0 Mya

638 occurrences of Acila on record, most of them in the Oligocene. 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

638 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

185 formations

Astoria — 46.19°N, 123.83°WAstoria — 44.73°N, 124.06°WAstoria — 44.65°N, 124.06°WAstoria — 43.40°N, 124.28°WAstoria — 45.22°N, 123.97°WTimms Point Silt — 33.73°N, 118.28°WHinoshima — 32.47°N, 130.47°EHinoshima — 32.39°N, 130.40°EPittsburg Bluff — 45.87°N, 123.12°WPittsburg Bluff — 46.13°N, 123.37°WPittsburg Bluff — 45.82°N, 123.18°WPittsburg Bluff — 45.90°N, 123.15°WPittsburg Bluff — 46.00°N, 123.26°WPittsburg Bluff — 45.59°N, 123.21°WPittsburg Bluff — 45.83°N, 123.98°WTentokuji — 39.75°N, 140.41°EPico — 34.36°N, 118.56°WPico — 34.43°N, 118.70°WPico — 34.34°N, 118.47°WBlakeley — 47.58°N, 122.48°WBlakeley — 48.16°N, 123.95°WBlakeley — 48.16°N, 123.83°WBlakeley — 47.55°N, 122.34°WBlakeley — 47.57°N, 122.11°WBlakeley — 47.95°N, 122.07°WMartinez — 38.05°N, 122.15°WMartinez — 38.02°N, 122.10°WMartinez — 38.21°N, 121.99°WOmagari — 42.83°N, 143.67°ETachilni — 54.98°N, 162.85°WTachilni — 54.85°N, 163.41°WTachilni — 54.79°N, 163.36°WClallam — 48.23°N, 124.14°WClallam — 48.27°N, 122.25°WClallam — 48.20°N, 122.11°WClallam — 48.26°N, 124.25°WStepovak — 55.46°N, 160.98°WStepovak — 55.37°N, 161.36°WStepovak — 55.26°N, 160.70°WStepovak — 55.64°N, 159.67°WStepovak — 55.66°N, 160.23°WArakayskaya — 47.05°N, 142.06°EPysht — 48.16°N, 123.91°WPysht — 48.16°N, 123.96°WKeasey — 46.00°N, 123.26°WKeasey — 45.90°N, 123.15°WKeasey — 45.88°N, 123.26°WWoodbine — 32.86°N, 97.06°WWoodbine — 33.71°N, 96.46°WWoodbine — 33.66°N, 96.91°WWoodbine — 33.68°N, 96.85°WWoodbine — 33.90°N, 95.57°WWoodbine — 33.87°N, 95.51°WChico — 39.66°N, 121.58°WChico — 39.83°N, 121.71°WChico — 39.86°N, 121.71°WChico — 39.64°N, 121.56°WChico — 39.79°N, 121.63°WChico — 38.72°N, 121.21°WKholmskaya — 47.05°N, 142.06°ELadd — 33.75°N, 117.68°WLadd — 33.72°N, 117.64°WSanta Susana — 34.29°N, 118.69°WSanta Susana — 34.25°N, 118.73°WQuimper — 47.95°N, 122.68°WQuimper — 48.00°N, 122.83°WQuimper — 48.05°N, 122.69°WEugene — 44.05°N, 123.09°WEugene — 44.05°N, 123.02°WEugene — 44.98°N, 123.18°WEugene — 44.94°N, 123.03°WEugene — 44.88°N, 123.13°WEugene — 44.77°N, 123.03°WSan Emigdio — 35.00°N, 119.29°WSan Emigdio — 35.06°N, 119.18°WSan Emigdio — 35.00°N, 119.00°WPanoche — 37.43°N, 121.27°WPanoche — 37.28°N, 121.21°WPanoche — 37.21°N, 121.22°W

Loading coastlines…

The named rock units Acila has been recovered from, largest first. Drawn where the rock is now, not where it formed. 161 further formations hold fewer occurrences each and are not listed. 82 occurrences have no formation on record, which is common for older literature.

Acila and its relatives

Oligocene

Where Acila and its relatives were recorded in the Oligocene.

Found in the same rock

2,048 taxa

The Paleobiology Database records 426 sites for Acila, and this reads 240 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

162 references

Each of the 638 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. 150 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 content2

Picture of Acila

Credit
EcologyWA
Licence
CC BY 2.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itNuculidae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Adams and Adams 1858)