Acila

Searched as Acila (Truncacila) nehalemensis minima. The Paleobiology Database treats Acila as the accepted name.

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 most 3.9 million years on record.

Every occurrence read is dated to somewhere between 37.71 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 9 of 9 occurrencesEoceneOligocene — about 0 of 9 occurrences38–38 Mya — about 0.3 occurrences38–37 Mya — about 0.4 occurrences37–37 Mya — about 0.4 occurrences37–37 Mya — about 0.4 occurrences37–37 Mya — about 0.4 occurrences37–37 Mya — about 0.4 occurrences37–37 Mya — about 0.4 occurrences37–36 Mya — about 0.4 occurrences36–36 Mya — about 0.4 occurrences36–36 Mya — about 0.4 occurrences36–36 Mya — about 0.4 occurrences36–36 Mya — about 0.4 occurrences36–36 Mya — about 0.4 occurrences36–35 Mya — about 0.4 occurrences35–35 Mya — about 0.4 occurrences35–35 Mya — about 0.4 occurrences35–35 Mya — about 0.4 occurrences35–35 Mya — about 0.4 occurrences35–35 Mya — about 0.4 occurrences35–35 Mya — about 0.4 occurrences35–34 Mya — about 0.4 occurrences34–34 Mya — about 0.4 occurrences34–34 Mya — about 0.4 occurrences34–34 Mya — about 0.3 occurrences38.21 Mya33.4 Mya

9 occurrences of Acila on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

9 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

1 formation

Eugene — 44.05°N, 123.09°WEugene — 44.16°N, 123.05°WEugene — 44.77°N, 123.03°W

Loading coastlines…

The named rock units Acila has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Acila and its relatives

Eocene

Where Acila and its relatives were recorded in the Eocene.

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

1 reference

Each of the 9 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. Each entry links to the Paleobiology Database's own record for the work.

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 EoceneThe world it lived on

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