Psammacoma

Psammacoma

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
MacominaePBDB
Diet
deposit feederPBDB
Life habit
infaunalPBDB
Motility
facultatively mobilePBDB
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 37 million years on record.

The record covers at least 37.71 Mya to 11.7 ka. No occurrence read is dated outside 41.03 Mya to 0 Mya.

Eocene — about 2 of 222 occurrencesEoceneOligocene — about 12 of 222 occurrencesOligoceneMiocene — about 167 of 222 occurrencesMiocenePliocene — about 22 of 222 occurrencesPleistocene — about 18 of 222 occurrences42–40 Mya — about 0.2 occurrences40–39 Mya — about 0.4 occurrences39–38 Mya — about 0.4 occurrences38–36 Mya — about 0.4 occurrences36–35 Mya — about 0.4 occurrences35–33 Mya — about 0.3 occurrences28–27 Mya — about 2 occurrences27–25 Mya — about 4 occurrences25–24 Mya — about 4 occurrences24–22 Mya — about 5 occurrences22–21 Mya — about 6 occurrences21–20 Mya — about 8 occurrences20–18 Mya — about 9 occurrences18–17 Mya — about 9 occurrences17–15 Mya — about 14 occurrences15–14 Mya — about 20 occurrences14–13 Mya — about 11 occurrences13–11 Mya — about 14 occurrences11–9.8 Mya — about 23 occurrences9.8–8.4 Mya — about 23 occurrences8.4–7.0 Mya — about 20 occurrences7.0–5.6 Mya — about 7 occurrences5.6–4.2 Mya — about 7 occurrences4.2–2.8 Mya — about 14 occurrences2.8–1.4 Mya — about 10 occurrences1.4–0 Mya — about 12 occurrences37.71 Mya11.7 ka41.9 Mya0 Mya

222 occurrences of Psammacoma on record, most of them in the Miocene. 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

222 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

53 formations

Gatun — 9.35°N, 79.81°WGatun — 9.35°N, 79.83°WGatun — 9.35°N, 79.85°WGatun — 9.33°N, 79.89°WAstoria — 44.73°N, 124.06°WAstoria — 44.65°N, 124.06°WAstoria — 43.40°N, 124.28°WCastilletes — 11.91°N, 71.35°WCastilletes — 11.93°N, 71.36°WShoal River — 30.72°N, 86.12°WShoal River — 30.72°N, 86.04°WShoal River — 30.63°N, 86.17°WShoal River — 30.69°N, 86.65°WTemblor — 35.95°N, 120.22°WTemblor — 35.50°N, 119.78°WTemblor — 35.42°N, 119.85°WTemblor — 35.47°N, 119.91°WTemblor — 35.40°N, 119.82°WVaqueros — 33.68°N, 117.76°WVaqueros — 34.33°N, 118.83°WVaqueros — 34.07°N, 118.71°WVaqueros — 34.37°N, 118.82°WVaqueros — 34.45°N, 118.92°WVaqueros — 34.58°N, 118.91°WVaqueros — 34.57°N, 119.02°WVaqueros — 35.24°N, 120.09°WCantaure — 11.90°N, 69.84°WFerrotepec — 18.03°N, 103.60°WTubará — 9.53°N, 74.87°WTubará — 10.99°N, 74.95°WTubará — 10.45°N, 75.33°WTubará — 10.75°N, 75.00°WClallam — 48.23°N, 124.14°WClallam — 48.27°N, 122.25°WClallam — 48.26°N, 124.25°WCulebra — 9.05°N, 79.65°WCulebra — 9.76°N, 79.68°WCulebra — 9.03°N, 79.63°WJackson Bluff — 30.39°N, 84.63°WCanoa — 0.20°N, 80.27°WBowden — 17.88°N, 76.28°WSpringvale — 10.62°N, 61.05°WPirabas — 0.80°S, 47.13°WPirabas — 1.00°S, 48.00°WPirabas — 0.48°S, 48.17°WUrumaco — 11.00°N, 69.83°WUrumaco — 11.24°N, 70.26°WPancho Rico — 36.05°N, 121.18°WPancho Rico — 35.89°N, 120.56°WPancho Rico — 36.06°N, 121.20°WJama — 0.18°S, 80.32°WZorritos — 3.67°S, 80.65°WZorritos — 3.80°S, 80.50°WChagres Sandstone — 9.15°N, 79.96°WChagres Sandstone — 9.27°N, 79.92°WArmuelles — 8.03°N, 82.92°WQuebrada Chocolate — 9.97°N, 83.07°WJimol — 11.90°N, 71.39°WJimol — 12.00°N, 71.31°W

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The named rock units Psammacoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 29 further formations hold fewer occurrences each and are not listed. 7 occurrences have no formation on record, which is common for older literature.

Psammacoma and its relatives

Miocene

Where Psammacoma and its relatives were recorded in the Miocene.

Found in the same rock

2,668 taxa

The Paleobiology Database records 148 sites for Psammacoma, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

50 references

Each of the 222 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. 38 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 Psammacoma

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 was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itMacominae through timeFormations of the MioceneThe world it lived on

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