Macoma (Psammacoma) arctata

Macoma arctata (Conrad, 1849), a relative of Macoma (Psammacoma) arctata — not Macoma (Psammacoma) arctata itself

Not Macoma (Psammacoma) arctata. This is Macoma arctata (Conrad, 1849), a relative — both are Tellinidae.

via GBIF · CC0 · via GBIF. 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
PsammacomaPBDB
Diet
deposit feederPBDB, for Psammacoma
Life habit
infaunalPBDB, for Psammacoma
Motility
facultatively mobilePBDB, for Psammacoma
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 15 million years on record.

The record covers at least 23.04 Mya to 7.246 Mya. No occurrence read is dated outside 27.3 Mya to 5.333 Mya.

Oligocene — about 12 of 50 occurrencesOligoceneMiocene — about 38 of 50 occurrencesMiocenePliocene — about 0 of 50 occurrences28–27 Mya — about 0.7 occurrences27–26 Mya — about 2 occurrences26–26 Mya — about 2 occurrences26–25 Mya — about 2 occurrences25–24 Mya — about 2 occurrences24–23 Mya — about 2 occurrences23–22 Mya — about 2 occurrences22–22 Mya — about 2 occurrences22–21 Mya — about 2 occurrences21–20 Mya — about 2 occurrences20–19 Mya — about 2 occurrences19–19 Mya — about 2 occurrences19–18 Mya — about 2 occurrences18–17 Mya — about 2 occurrences17–16 Mya — about 2 occurrences16–16 Mya — about 4 occurrences16–15 Mya — about 6 occurrences15–14 Mya — about 6 occurrences14–13 Mya — about 2 occurrences13–12 Mya — about 0.4 occurrences12–12 Mya — about 0.4 occurrences12–11 Mya — about 0.1 occurrences7.9–7.1 Mya — about 0.2 occurrences7.1–6.4 Mya — about 1 occurrence6.4–5.6 Mya — about 1 occurrence5.6–4.8 Mya — about 0.4 occurrences23.04 Mya7.246 Mya27.8 Mya4.8 Mya

50 occurrences of Macoma (Psammacoma) arctata on record, most of them in the Miocene. 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

50 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

8 formations

Astoria — 44.73°N, 124.06°WAstoria — 44.65°N, 124.06°WAstoria — 43.40°N, 124.28°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°WClallam — 48.23°N, 124.14°WClallam — 48.27°N, 122.25°WClallam — 48.26°N, 124.25°WPancho Rico — 36.05°N, 121.18°WPancho Rico — 35.89°N, 120.56°WPancho Rico — 36.06°N, 121.20°WUspenskaya — 60.42°N, 165.92°ERound Mountain — 35.43°N, 118.80°WFreeman Silt — 35.27°N, 119.31°W

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The named rock units Macoma (Psammacoma) arctata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Macoma (Psammacoma) arctata and its relatives

Miocene

Where Macoma (Psammacoma) arctata and its relatives were recorded in the Miocene.

Found in the same rock

376 taxa

The Paleobiology Database records 30 sites for Macoma (Psammacoma) arctata, 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

12 references

Each of the 50 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 Macoma arctata (Conrad, 1849)

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

No 3D scan of Macoma (Psammacoma) arctata was found in MorphoSource and Sketchfab.

Smithsonian Open Access 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 itPsammacoma through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1849)