Acrosterigma

Acrosterigma is a genus of large saltwater clams or cockles, marine bivalve mollusc in the family Cardiidae, the cockles.

Acrosterigma

Jan Delsing. · 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
TrachycardiinaePBDB
Diet
suspension feederPBDB
Life habit
infaunalPBDB
Motility
facultatively mobilePBDB
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 15 million years on record.

The record covers at least 15.98 Mya to 11.7 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.

Oligocene — about 0 of 57 occurrencesMiocene — about 22 of 57 occurrencesMiocenePliocene — about 9 of 57 occurrencesPliocenePleistocene — about 25 of 57 occurrencesPleistocene24–23 Mya — about 0.1 occurrences23–22 Mya — about 0.3 occurrences22–21 Mya — about 0.3 occurrences21–20 Mya — about 0.3 occurrences20–20 Mya — about 0.5 occurrences20–19 Mya — about 0.5 occurrences19–18 Mya — about 0.5 occurrences18–17 Mya — about 0.5 occurrences17–16 Mya — about 0.5 occurrences16–16 Mya — about 1 occurrence16–15 Mya — about 3 occurrences15–14 Mya — about 3 occurrences14–13 Mya — about 1 occurrence13–13 Mya — about 0.7 occurrences13–12 Mya — about 0.7 occurrences12–11 Mya — about 0.9 occurrences11–10 Mya — about 0.9 occurrences10–9.4 Mya — about 0.9 occurrences9.4–8.6 Mya — about 0.9 occurrences8.6–7.8 Mya — about 0.9 occurrences7.8–7.1 Mya — about 1 occurrence7.1–6.3 Mya — about 2 occurrences6.3–5.5 Mya — about 2 occurrences5.5–4.7 Mya — about 2 occurrences4.7–3.9 Mya — about 2 occurrences3.9–3.1 Mya — about 3 occurrences3.1–2.4 Mya — about 4 occurrences2.4–1.6 Mya — about 3 occurrences1.6–785 ka Mya — about 3 occurrences785 ka–0 Mya — about 18 occurrences15.98 Mya11.7 ka23.5 Mya0 Mya

57 occurrences of Acrosterigma 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

57 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

25 formations

Gurabo — 19.45°N, 70.70°WGurabo — 19.53°N, 71.33°WGurabo — 18.93°N, 71.62°WToukoshan — 24.47°N, 120.72°EColville Sandstone — 29.52°S, 126.38°ETogopi — 5.50°N, 117.00°EWaimanalo — 21.25°N, 157.78°WWaimanalo — 21.30°N, 158.10°WUpper Kalibeng — 7.37°S, 111.32°EWare — 11.85°N, 71.32°WKutai Basin — 0.17°N, 117.44°ENullarbor Limestone — 32.03°S, 124.33°EEtolonskaya — 58.42°N, 159.00°EKakertskaya — 62.50°N, 165.00°ELower Sandstone — 34.87°N, 133.03°ECercado — 19.53°N, 71.27°WPoivre — 20.85°S, 115.50°EDampier Limestone — 25.53°S, 113.48°ETamala Limestone — 32.00°S, 115.75°EDry Creek Sands — 34.85°S, 138.60°EBowden — 17.88°N, 76.28°WNishikurosawa — 39.70°N, 140.12°ECilanang — 7.49°S, 110.00°EBaghmara — 25.17°N, 90.67°EBermont — 26.38°N, 80.71°WWaccamaw — 34.17°N, 78.60°WToshima Sand — 34.62°N, 137.22°E

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The named rock units Acrosterigma has been recovered from, largest first. Drawn where the rock is now, not where it formed. One further formation holds fewer occurrences and is not listed. 19 occurrences have no formation on record, which is common for older literature.

Acrosterigma and its relatives

Pleistocene

Where Acrosterigma and its relatives were recorded in the Pleistocene.

Found in the same rock

1,150 taxa

The Paleobiology Database records 32 sites for Acrosterigma, 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

28 references

Each of the 57 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. 16 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 Acrosterigma

Credit
Jan Delsing.
Licence
Public Domain
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Acrosterigma magnum · FMNH:Invertebrate Zoology:311592

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 itTrachycardiinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Dall 1900