Calliostoma

Searched as Calliostoma philanthropum pontoni. The Paleobiology Database treats Calliostoma as the accepted name.

Calliostoma is a genus of small to medium-sized sea snails with gills and an operculum, marine gastropod molluscs within the family Calliostomatidae, the Calliostoma top snails. Previously this genus was placed within the family Trochidae. Calliostoma is the type genus of the family Calliostomatidae.

Calliostoma

Jerry Kirkhart · CC BY 2.0 · 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
CalliostomatinaePBDB
Diet
carnivorePBDB
Life habit
epifaunalPBDB
Motility
actively mobilePBDB
Vision
limitedPBDB, for Gastropoda

Time the record covers

At most 1.9 million years on record.

Every occurrence read is dated to somewhere between 2.58 Mya and 774 ka, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pliocene — about 0 of 2 occurrencesPleistocene — about 2 of 2 occurrencesPleistocene2.6–2.5 Mya — about 0.1 occurrences2.5–2.4 Mya — about 0.1 occurrences2.4–2.3 Mya — about 0.1 occurrences2.3–2.2 Mya — about 0.1 occurrences2.2–2.1 Mya — about 0.1 occurrences2.1–2.1 Mya — about 0.1 occurrences2.1–2.0 Mya — about 0.1 occurrences2.0–1.9 Mya — about 0.1 occurrences1.9–1.8 Mya — about 0.1 occurrences1.8–1.7 Mya — about 0.1 occurrences1.7–1.6 Mya — about 0.1 occurrences1.6–1.5 Mya — about 0.1 occurrences1.5–1.4 Mya — about 0.1 occurrences1.4–1.3 Mya — about 0.1 occurrences1.3–1.2 Mya — about 0.1 occurrences1.2–1.1 Mya — about 0.1 occurrences1.1–1.0 Mya — about 0.1 occurrences1.0–929 ka Mya — about 0.1 occurrences929 ka–835 ka Mya — about 0.1 occurrences835 ka–742 ka Mya — about 0.1 occurrences3.08 Mya274 ka

2 occurrences of Calliostoma on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

2 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

1 formation

James City — 35.28°N, 76.65°W

Loading coastlines…

The named rock units Calliostoma has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Calliostoma and its relatives

Pleistocene

Where Calliostoma and its relatives were recorded in the Pleistocene.

Found in the same rock

3,287 taxa

The Paleobiology Database records 385 sites for Calliostoma, and this reads 240 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

1 reference

Each of the 2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content2

Picture of Calliostoma

Credit
Jerry Kirkhart
Licence
CC BY 2.0
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 was 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 itCalliostomatinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Swainson 1840