Cirsochilus

Cirsochilus is an extinct genus of sea snails, marine gastropod molluscs in the family Colloniidae. Fossils of the genus date to between the Cretaceous and the Quaternary periods, and are found globally.

Cirsochilus

MNHN - Museum national d'Histoire naturelle · 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
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 111 million years on record.

The record covers at least 113.2 Mya to 1.8 Mya. No occurrence read is dated outside 119.57 Mya to 774 ka.

Early Cretaceous — about 1 of 29 occurrencesEarly CretaceousLate Cretaceous — about 0 of 29 occurrencesPaleocene — about 8 of 29 occurrencesEocene — about 18 of 29 occurrencesEoceneOligocene — about 1 of 29 occurrencesOligoceneMiocene — about 0 of 29 occurrencesPliocene — about 0 of 29 occurrencesPleistocene — about 1 of 29 occurrences122–118 Mya — about 0.3 occurrences118–114 Mya — about 0.6 occurrences114–110 Mya — about 0.1 occurrences61–57 Mya — about 6 occurrences57–53 Mya — about 2 occurrences49–45 Mya — about 2 occurrences45–41 Mya — about 4 occurrences41–37 Mya — about 12 occurrences37–33 Mya — about 0.2 occurrences33–28 Mya — about 0.6 occurrences28–24 Mya — about 0.2 occurrences4.1–0 Mya — about 1 occurrence113.2 Mya1.8 Mya122 Mya0 Mya

29 occurrences of Cirsochilus on record, most of them in the Eocene. 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

29 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

11 formations

Cook Mountain — 31.12°N, 95.90°WCook Mountain — 31.20°N, 95.73°WCook Mountain — 30.63°N, 96.54°WCook Mountain — 30.62°N, 96.56°WGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.55°N, 87.91°WBabica Beds — 49.92°N, 21.90°EPebble Point — 38.70°S, 143.18°EBanc à verrins — 48.85°N, 1.94°EWeches — 31.11°N, 96.28°WWeches — 31.25°N, 96.12°WCzarnorzeki Beds — 49.77°N, 21.93°EChinen — 26.17°N, 127.83°EYegua — 30.24°N, 96.99°WAlisitos — 31.52°N, 116.65°WLincoln Creek — 47.66°N, 122.96°W

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

Cirsochilus and its relatives

Eocene

Where Cirsochilus and its relatives were recorded in the Eocene.

Found in the same rock

888 taxa

The Paleobiology Database records 22 sites for Cirsochilus, 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

9 references

Each of the 29 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. 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 Cirsochilus

Credit
MNHN - Museum national d'Histoire naturelle
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Cirsochilus 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 itColloniidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Cossmann 1888)