Helicoidea

Helicoidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the order Stylommatophora.

Helicoidea

Diana Foreman · 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
HelicoideiPBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 93 million years on record.

The record covers at least 93.9 Mya to 11.7 ka. No occurrence read is dated outside 113.2 Mya to 0 Mya.

Early Cretaceous — about 1 of 393 occurrencesEarly CretaceousLate Cretaceous — about 3 of 393 occurrencesLate CretaceousPaleocene — about 0 of 393 occurrencesPaleoceneEocene — about 31 of 393 occurrencesEoceneOligocene — about 13 of 393 occurrencesOligoceneMiocene — about 216 of 393 occurrencesMiocenePliocene — about 11 of 393 occurrencesPleistocene — about 114 of 393 occurrences115–112 Mya — about 0.1 occurrences112–108 Mya — about 0.2 occurrences108–104 Mya — about 0.2 occurrences104–100 Mya — about 0.2 occurrences100–96 Mya — about 0.2 occurrences96–92 Mya — about 0.1 occurrences73–69 Mya — about 1 occurrence69–65 Mya — about 2 occurrences62–58 Mya — about 0.1 occurrences58–54 Mya — about 2 occurrences54–50 Mya — about 2 occurrences50–46 Mya — about 3 occurrences46–42 Mya — about 4 occurrences42–38 Mya — about 5 occurrences38–35 Mya — about 12 occurrences35–31 Mya — about 4 occurrences31–27 Mya — about 2 occurrences27–23 Mya — about 9 occurrences23–19 Mya — about 22 occurrences19–15 Mya — about 50 occurrences15–12 Mya — about 110 occurrences12–7.7 Mya — about 24 occurrences7.7–3.8 Mya — about 14 occurrences3.8–0 Mya — about 125 occurrences93.9 Mya11.7 ka115 Mya0 Mya

393 occurrences of Helicoidea on record, most of them in the Miocene. 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

393 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

43 formations

Ober Süßwassermolasse — 48.63°N, 11.80°EUpper Freshwater Molasse — 48.15°N, 9.88°EUpper Freshwater Molasse — 48.66°N, 10.23°EUpper Freshwater Molasse — 48.09°N, 10.03°EUpper Freshwater Molasse — 48.63°N, 11.80°EUpper Freshwater Molasse — 48.16°N, 10.11°ERandeck Maar — 48.57°N, 9.53°EArcadia — 27.89°N, 82.48°WArcadia — 27.96°N, 82.37°WArcadia — 29.25°N, 82.17°WArcadia — 30.48°N, 84.02°WArcadia — 30.21°N, 84.30°WArcadia — 30.49°N, 85.17°WBembridge Limestone — 50.67°N, 1.53°WBembridge Limestone — 50.67°N, 1.08°WKirchberg — 48.47°N, 10.35°EKirchberg — 48.48°N, 10.48°EKirchberg — 48.57°N, 10.42°ELower Freshwater Molasse — 46.88°N, 7.11°Efacies à Congeria — 45.05°N, 7.93°EGrand Bay — 12.48°N, 61.42°WDeep River — 46.63°N, 111.06°WDeep River — 46.60°N, 111.04°WDeep River — 46.68°N, 111.14°WCreechbarrow Limestone — 50.65°N, 2.12°WWillwood — 44.30°N, 109.00°WWillwood — 44.78°N, 108.97°WFort Thompson — 26.76°N, 81.44°WScripps — 32.83°N, 117.12°WHeadon Beds — 50.72°N, 1.59°WOsborne Beds — 50.71°N, 1.10°WVenta del Moro-Villatoya — 39.48°N, 1.35°WSappa — 39.80°N, 98.10°WShuler — 32.71°N, 96.71°WSajovolgyi — 47.97°N, 19.69°EEdelény — 48.39°N, 20.64°EGrimmelfingen — 48.60°N, 10.72°ELefkon — 41.17°N, 23.50°EChambers Tuff — 29.90°N, 104.20°W

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The named rock units Helicoidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 19 further formations hold fewer occurrences each and are not listed. 232 occurrences have no formation on record, which is common for older literature.

Helicoidea and its relatives

Miocene

Where Helicoidea and its relatives were recorded in the Miocene.

Found in the same rock

3,276 taxa

The Paleobiology Database records 188 sites for Helicoidea, 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

102 references

Each of the 393 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. 90 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 Helicoidea

Credit
Diana Foreman
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Helicoidea 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 itHelicoidei through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Rafinesque 1815