Helicina

Helicina is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks.

Helicina

D. G. Robinson, A. Hovestadt, A. Fields & A. S. H. Breure · CC BY 3.0 · 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
StylommatophoraPBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 121 million years on record.

The record covers at least 121.4 Mya to 11.7 ka. No occurrence read is dated outside 125.77 Mya to 0 Mya.

Early Cretaceous — about 2 of 1357 occurrencesEarly CretaceousLate Cretaceous — about 35 of 1357 occurrencesLate CretaceousPaleocene — about 6 of 1357 occurrencesEocene — about 82 of 1357 occurrencesEoceneOligocene — about 44 of 1357 occurrencesOligoceneMiocene — about 748 of 1357 occurrencesMiocenePliocene — about 37 of 1357 occurrencesPleistocene — about 384 of 1357 occurrences128–124 Mya — about 0.4 occurrences124–120 Mya — about 0.6 occurrences115–111 Mya — about 0.1 occurrences111–107 Mya — about 0.2 occurrences107–103 Mya — about 0.2 occurrences103–98 Mya — about 0.2 occurrences98–94 Mya — about 0.2 occurrences94–90 Mya — about 0.0 occurrences86–81 Mya — about 0.3 occurrences81–77 Mya — about 0.6 occurrences77–73 Mya — about 0.6 occurrences73–68 Mya — about 20 occurrences68–64 Mya — about 14 occurrences64–60 Mya — about 3 occurrences60–56 Mya — about 4 occurrences56–51 Mya — about 14 occurrences51–47 Mya — about 16 occurrences47–43 Mya — about 16 occurrences43–38 Mya — about 13 occurrences38–34 Mya — about 20 occurrences34–30 Mya — about 9 occurrences30–26 Mya — about 17 occurrences26–21 Mya — about 40 occurrences21–17 Mya — about 36 occurrences17–13 Mya — about 375 occurrences13–8.6 Mya — about 121 occurrences8.6–4.3 Mya — about 207 occurrences4.3–0 Mya — about 428 occurrences121.4 Mya11.7 ka128 Mya0 Mya

1,357 occurrences of Helicina 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

1,357 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

74 formations

facies à Congeria — 45.05°N, 7.93°EOber 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 — 30.24°N, 84.23°WArcadia — 30.15°N, 84.37°WArcadia — 30.49°N, 85.17°WEdelény — 48.39°N, 20.64°EQueguay — 31.92°S, 57.91°WQueguay — 33.53°S, 56.88°WQueguay — 32.37°S, 57.61°WQueguay — 32.48°S, 57.41°WQueguay — 33.13°S, 57.25°WQueguay — 34.40°S, 55.64°WFort Thompson — 26.76°N, 81.44°WWillwood — 44.30°N, 109.00°WWillwood — 44.83°N, 109.09°WWillwood — 44.78°N, 108.97°WShuler — 32.71°N, 96.71°WAfyon — 39.00°N, 31.00°ESappa — 39.80°N, 98.10°WSarmiento — 42.90°S, 71.32°WLower Freshwater Molasse — 46.88°N, 7.11°EDeep 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°WBridger — 42.42°N, 109.35°WBridger — 41.20°N, 110.50°WBridger — 42.70°N, 110.10°WBridger — 41.28°N, 110.03°WSajovolgyi — 47.97°N, 19.69°EKirchberg — 48.47°N, 10.35°EKirchberg — 48.48°N, 10.48°EKirchberg — 48.57°N, 10.42°ELefkon — 41.17°N, 23.50°EBembridge Limestone — 50.67°N, 1.53°WBembridge Limestone — 50.67°N, 1.08°WChorrillo — 50.51°S, 72.56°WBorgloon — 50.80°N, 5.33°EGrand Bay — 12.48°N, 61.42°W

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The named rock units Helicina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 50 further formations hold fewer occurrences each and are not listed. 762 occurrences have no formation on record, which is common for older literature.

Helicina and its relatives

Miocene

Where Helicina and its relatives were recorded in the Miocene.

Found in the same rock

4,424 taxa

The Paleobiology Database records 329 sites for Helicina, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

191 references

Each of the 1,357 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. 179 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 content2

Picture of Helicina

Credit
D. G. Robinson, A. Hovestadt, A. Fields & A. S. H. Breure
Licence
CC BY 3.0
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
Limacina helicina · ANSP:IP:23C_4

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 itStylommatophora through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.