Leukoma

Leukoma

Bricktop · CC BY-SA 3.0 · via Wikidata/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
VenerinaePBDB
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 232 occurrencesMiocene — about 44 of 232 occurrencesMiocenePliocene — about 37 of 232 occurrencesPliocenePleistocene — about 148 of 232 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 0.3 occurrences20–19 Mya — about 0.3 occurrences19–18 Mya — about 0.3 occurrences18–17 Mya — about 0.3 occurrences17–16 Mya — about 0.3 occurrences16–16 Mya — about 0.7 occurrences16–15 Mya — about 2 occurrences15–14 Mya — about 2 occurrences14–13 Mya — about 2 occurrences13–13 Mya — about 2 occurrences13–12 Mya — about 2 occurrences12–11 Mya — about 3 occurrences11–10 Mya — about 3 occurrences10–9.4 Mya — about 3 occurrences9.4–8.6 Mya — about 3 occurrences8.6–7.8 Mya — about 3 occurrences7.8–7.1 Mya — about 4 occurrences7.1–6.3 Mya — about 6 occurrences6.3–5.5 Mya — about 6 occurrences5.5–4.7 Mya — about 7 occurrences4.7–3.9 Mya — about 8 occurrences3.9–3.1 Mya — about 12 occurrences3.1–2.4 Mya — about 23 occurrences2.4–1.6 Mya — about 32 occurrences1.6–785 ka Mya — about 10 occurrences785 ka–0 Mya — about 96 occurrences15.98 Mya11.7 ka23.5 Mya0 Mya

232 occurrences of Leukoma 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

232 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

50 formations

Careaga Sandstone — 34.88°N, 120.51°WCareaga Sandstone — 34.84°N, 120.41°WCareaga Sandstone — 34.74°N, 120.41°WCareaga Sandstone — 34.85°N, 120.26°WPalos Verdes Sand — 33.80°N, 118.16°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WPalos Verdes Sand — 33.66°N, 117.94°WKubota — 37.50°N, 140.00°ESisquoc — 34.81°N, 120.22°WPancho Rico — 36.24°N, 121.29°WPancho Rico — 35.89°N, 121.05°WPancho Rico — 35.99°N, 120.91°WPancho Rico — 35.73°N, 120.81°WPancho Rico — 36.03°N, 120.80°WPancho Rico — 35.90°N, 120.84°WEstratos de Caldera — 27.05°S, 70.79°WEstratos de Caldera — 27.15°S, 70.93°WEstratos de Caldera — 27.13°S, 70.92°WEstratos de Caldera — 27.33°S, 70.87°WEstratos de Caldera — 27.51°S, 70.84°WUnnamed — 33.24°N, 119.51°WPampa del Palo terrace — 17.57°S, 71.34°WPampa del Palo terrace — 17.58°S, 71.17°WKanomatazawa — 36.66°N, 140.10°EItahana — 36.00°N, 139.00°ESan Pedro Sand — 33.74°N, 118.28°WJacalitos — 36.07°N, 120.44°WJacalitos — 36.06°N, 120.45°WJacalitos — 36.03°N, 120.39°WJacalitos — 35.95°N, 120.17°WPico — 34.42°N, 118.70°WPico — 34.36°N, 118.56°WTachilni — 54.98°N, 162.85°WTachilni — 54.85°N, 163.41°WNishikurosawa — 39.70°N, 140.12°EMerced — 37.38°N, 122.19°WMerced — 38.37°N, 122.92°WNagura Gravel — 24.43°N, 124.23°EErmanovskaya — 58.50°N, 159.17°EEmpire — 43.39°N, 124.28°WEmpire — 43.43°N, 124.23°WGatun — 9.35°N, 79.83°WBattery — 41.76°N, 124.20°WSanta Clara — 37.37°N, 122.14°WHookton — 40.98°N, 124.11°WToshima Sand — 34.62°N, 137.22°E

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The named rock units Leukoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 26 further formations hold fewer occurrences each and are not listed. 68 occurrences have no formation on record, which is common for older literature.

Leukoma and its relatives

Pleistocene

Where Leukoma and its relatives were recorded in the Pleistocene.

Found in the same rock

2,081 taxa

The Paleobiology Database records 186 sites for Leukoma, 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

75 references

Each of the 232 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. 63 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 Leukoma

Credit
Bricktop
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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. (Römer 1857)