Ancylus

Ancylus is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.

Ancylus

Mauro Mariani at Italian Wikipedia · 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
PlanorbidaePBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda
Environment
freshwaterPBDB, for Planorbidae

Time the record covers

At least 309 million years on record.

The record covers at least 309.8 Mya to 11.7 ka. No occurrence read is dated outside 314.6 Mya to 0 Mya.

Carboniferous — about 1 of 10 occurrencesPermian — about 0 of 10 occurrencesEarly Triassic — about 0 of 10 occurrencesMiddle Triassic — about 0 of 10 occurrencesLate Triassic — about 0 of 10 occurrencesEarly Jurassic — about 0 of 10 occurrencesMiddle Jurassic — about 0 of 10 occurrencesLate Jurassic — about 0 of 10 occurrencesEarly Cretaceous — about 0 of 10 occurrencesLate Cretaceous — about 0 of 10 occurrencesPaleocene — about 0 of 10 occurrencesEocene — about 1 of 10 occurrencesOligocene — about 0 of 10 occurrencesMiocene — about 2 of 10 occurrencesPliocene — about 1 of 10 occurrencesPleistocene — about 4 of 10 occurrences321–310 Mya — about 0.9 occurrences310–299 Mya — about 0.1 occurrences43–32 Mya — about 1 occurrence32–21 Mya — about 0.1 occurrences21–11 Mya — about 0.9 occurrences11–0 Mya — about 7 occurrences309.8 Mya11.7 ka321 Mya0 Mya

10 occurrences of Ancylus 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

10 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

4 formations

Headon Beds — 50.72°N, 1.59°WVenta del Moro-Villatoya — 39.48°N, 1.35°WUpper Coal Measures — 54.91°N, 1.44°WCórcoles — 40.47°N, 2.68°W

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The named rock units Ancylus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Ancylus and its relatives

Pleistocene

Where Ancylus and its relatives were recorded in the Pleistocene.

Found in the same rock

283 taxa

The Paleobiology Database records 10 sites for Ancylus, 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 10 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 content2

Picture of Ancylus

Credit
Mauro Mariani at Italian Wikipedia
Licence
Public Domain
Commercial use
the licence allows it

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Ancylus fluviatilis · SMF:384699

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 itPlanorbidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Müller 1774