Homalopoma (Homalopoma) luridum

Homalopoma luridum (Dall, 1885), a relative of Homalopoma (Homalopoma) luridum — not Homalopoma (Homalopoma) luridum itself

Not Homalopoma (Homalopoma) luridum. This is Homalopoma luridum (Dall, 1885), a relative — both are Colloniidae.

Gustav Paulay, Emmett Duffy, Matt Whalen, Alyssa Gehman · CC BY 4.0 · 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
Also called
dark dwarf-turbanPBDB
Sits inside
Homalopoma (Homalopoma)PBDB
Diet
grazerPBDB, for Turbinidae
Life habit
epifaunalPBDB, for Turbinidae
Motility
actively mobilePBDB, for Turbinidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 2.4 million years on record.

The record covers at least 2.58 Mya to 129 ka. No occurrence read is dated outside 3.6 Mya to 0 Mya.

Pliocene — about 1 of 62 occurrencesPliocenePleistocene — about 61 of 62 occurrencesPleistoceneHolocene — about 0 of 62 occurrences3.7–3.6 Mya — about 0.0 occurrences3.6–3.4 Mya — about 0.1 occurrences3.4–3.3 Mya — about 0.1 occurrences3.3–3.1 Mya — about 0.1 occurrences3.1–3.0 Mya — about 0.1 occurrences3.0–2.9 Mya — about 0.1 occurrences2.9–2.7 Mya — about 0.1 occurrences2.7–2.6 Mya — about 0.1 occurrences2.6–2.5 Mya — about 1 occurrence2.5–2.3 Mya — about 1 occurrence2.3–2.2 Mya — about 1 occurrence2.2–2.0 Mya — about 1 occurrence2.0–1.9 Mya — about 1 occurrence1.9–1.8 Mya — about 1 occurrence1.8–1.6 Mya — about 1 occurrence1.6–1.5 Mya — about 1 occurrence1.5–1.4 Mya — about 1 occurrence1.4–1.2 Mya — about 1 occurrence1.2–1.1 Mya — about 1 occurrence1.1–957 ka Mya — about 1 occurrence957 ka–820 ka Mya — about 1 occurrence820 ka–683 ka Mya — about 3 occurrences683 ka–547 ka Mya — about 4 occurrences547 ka–410 ka Mya — about 4 occurrences410 ka–273 ka Mya — about 4 occurrences273 ka–137 ka Mya — about 4 occurrences137 ka–0 Mya — about 27 occurrences2.58 Mya129 ka4.1 Mya0 Mya

62 occurrences of Homalopoma (Homalopoma) luridum 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

62 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

10 formations

Unnamed — 33.24°N, 119.51°WUnnamed — 33.24°N, 119.55°WQuaternary terrace — 33.75°N, 118.33°WQuaternary terrace — 33.76°N, 118.35°WLomita Marl — 33.75°N, 118.30°WSan Pedro Sand — 33.74°N, 118.28°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WTimms Point Silt — 33.73°N, 118.28°WDiscovery Point — 29.00°N, 118.27°WDiscovery Point — 29.00°N, 118.23°WCareaga Sandstone — 34.84°N, 120.41°WCareaga Sandstone — 34.88°N, 120.51°WFernando — 34.05°N, 118.25°WSanta Barbara — 34.40°N, 119.69°W

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The named rock units Homalopoma (Homalopoma) luridum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 26 occurrences have no formation on record, which is common for older literature.

Homalopoma (Homalopoma) luridum and its relatives

Pleistocene

Where Homalopoma (Homalopoma) luridum and its relatives were recorded in the Pleistocene.

Found in the same rock

1,209 taxa

The Paleobiology Database records 47 sites for Homalopoma (Homalopoma) luridum, 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

29 references

Each of the 62 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. 17 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 Homalopoma luridum (Dall, 1885)

Source
GBIF
Credit
Gustav Paulay, Emmett Duffy, Matt Whalen, Alyssa Gehman
Licence
CC BY 4.0
Commercial use
the licence allows it

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 itHomalopoma (Homalopoma) through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dall 1885)