Simomactra falcata

Simomactra falcata

via iDigBio · CC0 · 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
Also called
hooked surfclamPBDB
Sits inside
SimomactraPBDB
Diet
suspension feederPBDB, for Mactridae
Life habit
infaunalPBDB, for Mactridae
Motility
facultatively mobilePBDB, for Mactridae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 3.4 million years on record.

The record covers at least 3.6 Mya to 129 ka. No occurrence read is dated outside 5.333 Mya to 11.7 ka.

Miocene — about 0 of 18 occurrencesPliocene — about 2 of 18 occurrencesPliocenePleistocene — about 16 of 18 occurrencesPleistoceneHolocene — about 0 of 18 occurrences5.4–5.3 Mya — about 0.1 occurrences5.3–5.1 Mya — about 0.2 occurrences5.1–4.9 Mya — about 0.2 occurrences4.9–4.7 Mya — about 0.2 occurrences4.7–4.5 Mya — about 0.2 occurrences4.5–4.3 Mya — about 0.2 occurrences4.3–4.1 Mya — about 0.2 occurrences4.1–3.9 Mya — about 0.2 occurrences3.9–3.7 Mya — about 0.2 occurrences3.7–3.5 Mya — about 0.1 occurrences3.5–3.3 Mya — about 0.1 occurrences3.3–3.1 Mya — about 0.1 occurrences3.1–2.9 Mya — about 0.1 occurrences2.9–2.7 Mya — about 0.1 occurrences2.7–2.5 Mya — about 0.1 occurrences2.5–2.3 Mya — about 0.1 occurrences2.3–2.1 Mya — about 0.1 occurrences2.1–1.9 Mya — about 0.1 occurrences1.9–1.8 Mya — about 0.1 occurrences1.8–1.6 Mya — about 0.1 occurrences1.6–1.4 Mya — about 0.1 occurrences1.4–1.2 Mya — about 0.1 occurrences1.2–972 ka Mya — about 0.1 occurrences972 ka–778 ka Mya — about 0.1 occurrences778 ka–583 ka Mya — about 1.0 occurrences583 ka–389 ka Mya — about 1.0 occurrences389 ka–194 ka Mya — about 1.0 occurrences194 ka–0 Mya — about 12 occurrences3.6 Mya129 ka5.8 Mya0 Mya

18 occurrences of Simomactra falcata 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

18 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

6 formations

Palos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.71°N, 118.27°WPalos Verdes Sand — 33.80°N, 118.17°WPalos Verdes — 33.63°N, 117.90°WSan Pedro Sand — 33.71°N, 118.27°WElk River — 42.74°N, 124.49°WWildcat — 40.64°N, 124.31°WEtchegoin — 36.16°N, 120.65°W

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The named rock units Simomactra falcata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Simomactra falcata and its relatives

Pleistocene

Where Simomactra falcata and its relatives were recorded in the Pleistocene.

Found in the same rock

749 taxa

The Paleobiology Database records 16 sites for Simomactra falcata, 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

9 references

Each of the 18 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 Simomactra falcata

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Simomactra falcata was found in Smithsonian Open Access and Sketchfab.

MorphoSource was 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 itSimomactra through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Gould 1850)