Longimactra

Oxyperas is a genus of large marine bivalve molluscs or clams, in the family Mactridae.

Longimactra

GrahamBould · Public Domain · 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
MactridaePBDB
Diet
suspension feederPBDB, for Mactridae
Life habit
infaunalPBDB, for Mactridae
Motility
facultatively mobilePBDB, for Mactridae
Vision
blindPBDB, for Bivalvia

Time the record covers

At most 3.4 million years on record.

The one occurrence read is dated to somewhere between 41.03 Mya and 37.71 Mya, which is a dating window rather than a span.

Eocene — about 1 of 1 occurrenceEocene41–41 Mya — about 0.0 occurrences41–41 Mya — about 0.0 occurrences41–41 Mya — about 0.0 occurrences41–41 Mya — about 0.0 occurrences41–40 Mya — about 0.0 occurrences40–40 Mya — about 0.0 occurrences40–40 Mya — about 0.0 occurrences40–40 Mya — about 0.0 occurrences40–40 Mya — about 0.0 occurrences40–40 Mya — about 0.0 occurrences40–40 Mya — about 0.0 occurrences40–39 Mya — about 0.0 occurrences39–39 Mya — about 0.0 occurrences39–39 Mya — about 0.0 occurrences39–39 Mya — about 0.0 occurrences39–39 Mya — about 0.0 occurrences39–39 Mya — about 0.0 occurrences39–39 Mya — about 0.0 occurrences39–38 Mya — about 0.0 occurrences38–38 Mya — about 0.0 occurrences38–38 Mya — about 0.0 occurrences38–38 Mya — about 0.0 occurrences38–38 Mya — about 0.0 occurrences38–38 Mya — about 0.0 occurrences41.53 Mya37.21 Mya

1 occurrence of Longimactra 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

1 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

Tapui Glauconitic Sandstone — 44.97°S, 170.58°E

Loading coastlines…

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

Longimactra and its relatives

Eocene

Where Longimactra and its relatives were recorded in the Eocene.

Found in the same rock

22 taxa

The Paleobiology Database records 1 site for Longimactra, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 1 occurrence 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 content1

Picture of Longimactra

Credit
GrahamBould
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Longimactra was found in MorphoSource and Sketchfab.

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 itMactridae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Finlay 1928