Arcopsis symmetrica

No picture of Arcopsis symmetrica was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Arcopsis symmetrica, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ArcopsisPBDB
Diet
suspension feederPBDB, for Arcopsis
Life habit
epifaunalPBDB, for Arcopsis
Motility
stationary, attachedPBDB, for Arcopsis
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 2.5 million years on record.

The record covers at least 2.58 Mya to 11.7 ka. No occurrence read is dated outside 5.333 Mya to 0 Mya.

Miocene — about 0 of 9 occurrencesPliocene — about 2 of 9 occurrencesPliocenePleistocene — about 5 of 9 occurrencesPleistoceneHolocene — about 2 of 9 occurrences5.4–5.3 Mya — about 0.1 occurrences5.3–5.1 Mya — about 0.1 occurrences5.1–4.9 Mya — about 0.1 occurrences4.9–4.7 Mya — about 0.1 occurrences4.7–4.5 Mya — about 0.1 occurrences4.5–4.3 Mya — about 0.1 occurrences4.3–4.1 Mya — about 0.1 occurrences4.1–3.9 Mya — about 0.1 occurrences3.9–3.7 Mya — about 0.1 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 0.1 occurrences583 ka–389 ka Mya — about 0.1 occurrences389 ka–194 ka Mya — about 0.1 occurrences194 ka–0 Mya — about 6 occurrences2.58 Mya11.7 ka5.8 Mya0 Mya

9 occurrences of Arcopsis symmetrica 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

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

3 formations

Tentokuji — 39.75°N, 140.41°EToshima Sand — 34.62°N, 137.22°ESakishima — 34.37°N, 136.82°E

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The named rock units Arcopsis symmetrica has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Arcopsis symmetrica and its relatives

Pleistocene

Where Arcopsis symmetrica and its relatives were recorded in the Pleistocene.

Found in the same rock

358 taxa

The Paleobiology Database records 8 sites for Arcopsis symmetrica, 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

6 references

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. 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 content0

No picture of Arcopsis symmetrica was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Arcopsis symmetrica, or no answer at all. This entry cannot say which.

No 3D scan of Arcopsis symmetrica was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itArcopsis through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Reeve 1844)