Cyclostrema

Cyclostrema is a genus of sea snails, marine gastropod mollusks in the family Liotiidae.

Cyclostrema

W.H. Dall · Public Domain · 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
LiotiinaePBDB
Diet
grazerPBDB, for Trochoidea
Life habit
epifaunalPBDB, for Trochoidea
Motility
actively mobilePBDB, for Trochoidea
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 59 million years on record.

The record covers at least 59.24 Mya to 11.7 ka. No occurrence read is dated outside 61.66 Mya to 0 Mya.

Paleocene — about 2 of 15 occurrencesPaleoceneEocene — about 0 of 15 occurrencesOligocene — about 0 of 15 occurrencesMiocene — about 0 of 15 occurrencesPliocene — about 6 of 15 occurrencesPleistocene — about 3 of 15 occurrences63–61 Mya — about 0.7 occurrences61–59 Mya — about 1 occurrence6.3–4.2 Mya — about 2 occurrences4.2–2.1 Mya — about 4 occurrences2.1–0 Mya — about 7 occurrences59.24 Mya11.7 ka63 Mya0 Mya

15 occurrences of Cyclostrema on record, most of them in the Pliocene. 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

15 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

3 formations

Lellinge Greensand — 55.71°N, 12.60°ETalar — 25.33°N, 62.00°ETalar — 25.33°N, 65.50°EOrmara & Jiwani — 25.25°N, 62.25°E

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The named rock units Cyclostrema has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Cyclostrema and its relatives

Pliocene

Where Cyclostrema and its relatives were recorded in the Pliocene.

Found in the same rock

246 taxa

The Paleobiology Database records 5 sites for Cyclostrema, 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

6 references

Each of the 15 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 Cyclostrema

Credit
W.H. Dall
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Cyclostrema 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 itLiotiinae through timeFormations of the PlioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Marryatt 1818