Collonia

Collonia is a genus of small sea snails with calcareous opercula, marine gastropod mollusks in the family Colloniidae.

Collonia

Pease, 1868 · CC0 · 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
ColloniidaePBDB
Diet
grazerPBDB, for Trochoidea
Life habit
epifaunalPBDB, for Trochoidea
Motility
actively mobilePBDB, for Trochoidea
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 219 million years on record.

The record covers at least 233.6 Mya to 13.82 Mya. No occurrence read is dated outside 237 Mya to 12.8 Mya.

Middle Triassic — about 0 of 31 occurrencesLate Triassic — about 10 of 31 occurrencesLate TriassicEarly Jurassic — about 0 of 31 occurrencesMiddle Jurassic — about 0 of 31 occurrencesLate Jurassic — about 0 of 31 occurrencesEarly Cretaceous — about 0 of 31 occurrencesLate Cretaceous — about 0 of 31 occurrencesPaleocene — about 7 of 31 occurrencesEocene — about 12 of 31 occurrencesEoceneOligocene — about 1 of 31 occurrencesMiocene — about 1 of 31 occurrences241–234 Mya — about 7 occurrences234–226 Mya — about 3 occurrences70–63 Mya — about 4 occurrences63–55 Mya — about 3 occurrences55–47 Mya — about 1 occurrence47–39 Mya — about 5 occurrences39–32 Mya — about 6 occurrences32–24 Mya — about 0.8 occurrences24–16 Mya — about 0.2 occurrences16–8.3 Mya — about 1 occurrence233.6 Mya13.82 Mya241 Mya8 Mya

31 occurrences of Collonia on record, most of them in the Eocene. 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

31 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

9 formations

Cassian — 46.57°N, 11.94°ECassian — 46.55°N, 11.93°ESables a Nummulites variolarius — 49.25°N, 2.50°ECalcaire de Mons — 50.45°N, 3.93°EHückelhoven — 51.08°N, 6.32°EHosselkus — 40.85°N, 122.10°WMarna di Possagno — 46.16°N, 13.37°EDanian Limestone — 55.25°N, 12.13°ESables de Pierrefonds — 49.38°N, 3.00°EBrejning — 56.87°N, 8.64°E

Loading coastlines…

The named rock units Collonia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 occurrences have no formation on record, which is common for older literature.

Collonia and its relatives

Eocene

Where Collonia and its relatives were recorded in the Eocene.

Found in the same rock

1,820 taxa

The Paleobiology Database records 19 sites for Collonia, 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

17 references

Each of the 31 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. 5 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 Collonia

Credit
Pease, 1868
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itColloniidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1850