Homalopoma

Homalopoma, common name the dwarf turbans, is a genus of mostly very small sea snails with a calcareous operculum, marine gastropoda molluscs in the subfamily Colloniinae of the family Colloniidae.

Homalopoma

Credit:2016 - Manuel CABALLER Project:RECOLNAT · CC BY 4.0 · via Wikipedia/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
TurbinidaePBDB
Diet
grazerPBDB, for Turbinidae
Life habit
epifaunalPBDB, for Turbinidae
Motility
actively mobilePBDB, for Turbinidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 83 million years on record.

The record covers at least 83.6 Mya to 129 ka. No occurrence read is dated outside 85.7 Mya to 0 Mya.

Late Cretaceous — about 2 of 196 occurrencesLate CretaceousPaleocene — about 5 of 196 occurrencesPaleoceneEocene — about 36 of 196 occurrencesEoceneOligocene — about 5 of 196 occurrencesOligoceneMiocene — about 15 of 196 occurrencesMiocenePliocene — about 17 of 196 occurrencesPleistocene — about 116 of 196 occurrences87–85 Mya — about 1 occurrence85–82 Mya — about 0.9 occurrences67–64 Mya — about 2 occurrences64–61 Mya — about 2 occurrences61–58 Mya — about 0.6 occurrences58–55 Mya — about 2 occurrences55–52 Mya — about 5 occurrences52–50 Mya — about 5 occurrences50–47 Mya — about 4 occurrences47–44 Mya — about 3 occurrences44–41 Mya — about 3 occurrences41–38 Mya — about 7 occurrences38–35 Mya — about 4 occurrences35–32 Mya — about 2 occurrences32–29 Mya — about 1 occurrence29–26 Mya — about 1 occurrence26–23 Mya — about 1 occurrence23–20 Mya — about 4 occurrences20–17 Mya — about 1 occurrence17–15 Mya — about 2 occurrences15–12 Mya — about 4 occurrences12–8.7 Mya — about 1 occurrence8.7–5.8 Mya — about 3 occurrences5.8–2.9 Mya — about 13 occurrences2.9–0 Mya — about 121 occurrences83.6 Mya129 ka87 Mya0 Mya

196 occurrences of Homalopoma 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

196 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

51 formations

Lomita Marl — 33.75°N, 118.30°WLomita Marl — 33.74°N, 118.29°WUnnamed — 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°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°WPalos Verdes Sand — 33.80°N, 118.17°WTimms Point Silt — 33.73°N, 118.28°WCareaga Sandstone — 34.84°N, 120.41°WCareaga Sandstone — 34.90°N, 120.32°WCareaga Sandstone — 34.88°N, 120.51°WCrescent — 47.31°N, 123.53°WCrescent — 47.31°N, 123.55°WAtsunai — 43.08°N, 143.83°EAtsunai — 42.80°N, 143.81°EFlournoy — 43.02°N, 123.93°WFlournoy — 43.28°N, 123.08°WRoseburg — 43.01°N, 123.91°WSanta Barbara — 34.40°N, 119.69°WCapay — 39.20°N, 121.82°WCapay — 38.77°N, 122.20°WCapay — 38.54°N, 122.05°WJuncal — 34.78°N, 119.15°WJuncal — 34.40°N, 118.48°WCowlitz — 46.40°N, 122.96°WCowlitz — 46.40°N, 122.93°WBrèches rouges de Carboneras — 37.60°N, 1.32°WBowden — 17.88°N, 76.28°WFalun de Saucats — 44.66°N, 0.57°WDiscovery Point — 29.00°N, 118.27°WDiscovery Point — 29.00°N, 118.23°WMare — 10.64°N, 64.11°WFernando — 34.05°N, 118.25°WLengua — 10.26°N, 61.41°WLengua — 10.23°N, 61.53°WQuimper — 48.00°N, 122.83°WLincoln Creek — 47.66°N, 122.96°WLincoln Creek — 46.41°N, 122.93°W

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The named rock units Homalopoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 27 further formations hold fewer occurrences each and are not listed. 58 occurrences have no formation on record, which is common for older literature.

Homalopoma and its relatives

Pleistocene

Where Homalopoma and its relatives were recorded in the Pleistocene.

Found in the same rock

2,506 taxa

The Paleobiology Database records 114 sites for Homalopoma, 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

87 references

Each of the 196 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. 75 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

Credit
Credit:2016 - Manuel CABALLER Project:RECOLNAT
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Homalopoma 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.

The description on this site

Licence
CC BY-SA 4.0

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

Keep going

What may have been alongside itTurbinidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Carpenter 1864