Placamen

Placamen

via iDigBio · 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
Sits inside
VenerinaePBDB
Diet
suspension feederPBDB, for Veneridae
Life habit
infaunalPBDB, for Veneridae
Motility
facultatively mobilePBDB, for Veneridae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 33 million years on record.

The record covers at least 33.9 Mya to 129 ka. No occurrence read is dated outside 37.71 Mya to 11.7 ka.

Eocene — about 2 of 45 occurrencesEoceneOligocene — about 0 of 45 occurrencesMiocene — about 10 of 45 occurrencesMiocenePliocene — about 11 of 45 occurrencesPleistocene — about 22 of 45 occurrences38–37 Mya — about 0.3 occurrences37–36 Mya — about 0.7 occurrences36–35 Mya — about 0.7 occurrences35–33 Mya — about 0.4 occurrences23–22 Mya — about 0.2 occurrences22–21 Mya — about 0.2 occurrences21–19 Mya — about 0.2 occurrences19–18 Mya — about 0.2 occurrences18–17 Mya — about 0.2 occurrences17–15 Mya — about 0.2 occurrences15–14 Mya — about 0.3 occurrences14–13 Mya — about 0.3 occurrences13–12 Mya — about 0.4 occurrences12–10 Mya — about 2 occurrences10–9.0 Mya — about 2 occurrences9.0–7.7 Mya — about 2 occurrences7.7–6.4 Mya — about 2 occurrences6.4–5.1 Mya — about 2 occurrences5.1–3.8 Mya — about 3 occurrences3.8–2.6 Mya — about 7 occurrences2.6–1.3 Mya — about 9 occurrences1.3–0 Mya — about 13 occurrences33.9 Mya129 ka38.5 Mya0 Mya

45 occurrences of Placamen 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

45 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

20 formations

Togopi — 5.50°N, 117.00°EToukoshan — 24.47°N, 120.72°EDry Creek Sands — 34.75°S, 138.68°EDry Creek Sands — 34.85°S, 138.60°EDry Creek Sands — 34.88°S, 138.49°EDry Creek Sands — 34.97°S, 138.54°EDampier Limestone — 25.53°S, 113.48°EAscot — 32.08°S, 115.92°ESzekou — 22.01°N, 120.72°EVigo — 13.00°N, 122.00°EMandul Marl — 3.75°N, 117.65°EKlasaman — 0.88°S, 131.25°ETartaro — 15.15°N, 121.01°ECabatuan — 10.86°N, 122.50°EUlian — 11.09°N, 122.49°EWilson Bluff — 31.02°S, 126.08°EToolinna Limestone — 32.07°S, 126.10°EColville Sandstone — 30.17°S, 124.12°ECilanang — 7.49°S, 110.00°EUpper Kalibeng — 7.37°S, 111.32°EToshima Sand — 34.62°N, 137.22°EMuddy Creek — 37.73°S, 142.02°ENaganuma — 35.38°N, 139.54°E

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The named rock units Placamen has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Placamen and its relatives

Pleistocene

Where Placamen and its relatives were recorded in the Pleistocene.

Found in the same rock

759 taxa

The Paleobiology Database records 30 sites for Placamen, 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

19 references

Each of the 45 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. 7 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 content1

Picture of Placamen

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Placamen 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 itVenerinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Iredale 1925