Acicula

Acicula is a genus of very small land snails with an operculum, terrestrial gastropod mollusks in the family Aciculidae.

Acicula

Francisco Welter Schultes [2] · 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
AciculidaePBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 5.5 million years on record.

The record covers at least 12.75 Mya to 7.246 Mya. No occurrence read is dated outside 13.82 Mya to 5.333 Mya.

Miocene — about 17 of 17 occurrencesMiocenePliocene — about 0 of 17 occurrences14–14 Mya — about 0.4 occurrences14–13 Mya — about 0.9 occurrences13–13 Mya — about 0.9 occurrences13–13 Mya — about 0.9 occurrences11–11 Mya — about 0.4 occurrences11–11 Mya — about 0.4 occurrences11–10 Mya — about 0.4 occurrences10–9.9 Mya — about 0.4 occurrences9.9–9.6 Mya — about 0.3 occurrences8.9–8.6 Mya — about 0.1 occurrences8.6–8.3 Mya — about 0.4 occurrences8.3–8.0 Mya — about 0.4 occurrences8.0–7.7 Mya — about 0.1 occurrences7.4–7.0 Mya — about 1 occurrence7.0–6.7 Mya — about 2 occurrences6.7–6.4 Mya — about 2 occurrences6.4–6.1 Mya — about 2 occurrences6.1–5.8 Mya — about 2 occurrences5.8–5.5 Mya — about 2 occurrences5.5–5.1 Mya — about 0.8 occurrences12.75 Mya7.246 Mya14.3 Mya4.8 Mya

17 occurrences of Acicula on record, most of them in the Miocene. 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

17 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

facies à Congeria — 45.05°N, 7.93°E

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The named rock units Acicula 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.

Acicula and its relatives

Miocene

Where Acicula and its relatives were recorded in the Miocene.

Found in the same rock

298 taxa

The Paleobiology Database records 12 sites for Acicula, 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

4 references

Each of the 17 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 Acicula

Credit
Francisco Welter Schultes [2]
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Acicula was found in MorphoSource and Sketchfab.

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 itAciculidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hartmann 1821