Lymnaea

Lymnaea is a genus of small to large-sized air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the subfamily Lymnaeinae of the family Lymnaeidae, the pond snails.

Lymnaea

Dr. Lars Peters · CC BY-SA 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
LymnaeidaePBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda
Environment
freshwaterPBDB, for Lymnaeidae

Time the record covers

At least 143 million years on record.

The record covers at least 143.1 Mya to 11.7 ka. No occurrence read is dated outside 154.8 Mya to 0 Mya.

Late Jurassic — about 2 of 121 occurrencesLate JurassicEarly Cretaceous — about 0 of 121 occurrencesLate Cretaceous — about 3 of 121 occurrencesLate CretaceousPaleocene — about 0 of 121 occurrencesEocene — about 20 of 121 occurrencesEoceneOligocene — about 5 of 121 occurrencesMiocene — about 49 of 121 occurrencesMiocenePliocene — about 13 of 121 occurrencesPleistocene — about 27 of 121 occurrences158–153 Mya — about 0.4 occurrences153–147 Mya — about 0.9 occurrences147–142 Mya — about 0.7 occurrences74–68 Mya — about 2 occurrences68–63 Mya — about 1 occurrence58–53 Mya — about 0.5 occurrences53–47 Mya — about 5 occurrences47–42 Mya — about 5 occurrences42–37 Mya — about 6 occurrences37–32 Mya — about 5 occurrences32–26 Mya — about 3 occurrences26–21 Mya — about 2 occurrences21–16 Mya — about 13 occurrences16–11 Mya — about 31 occurrences11–5.3 Mya — about 3 occurrences5.3–0 Mya — about 42 occurrences143.1 Mya11.7 ka158 Mya0 Mya

121 occurrences of Lymnaea 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

121 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

25 formations

Upper 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°EWind River — 43.36°N, 107.41°WWind River — 43.36°N, 107.88°WWind River — 43.31°N, 107.43°WOber Süßwassermolasse — 48.63°N, 11.80°EBorgloon — 50.80°N, 5.33°EBorgloon — 50.89°N, 5.64°EBorgloon — 51.00°N, 4.50°EHeadon Beds — 50.72°N, 1.59°WShuler — 32.71°N, 96.71°WRandeck Maar — 48.57°N, 9.53°EKirchberg — 48.60°N, 10.72°EKirchberg — 48.68°N, 10.82°EKirchberg — 48.48°N, 10.48°ESiesta — 37.88°N, 122.22°WSiesta — 37.87°N, 122.12°WFluvio-marine Crag — 52.58°N, 1.38°EDensuș-Ciula — 45.62°N, 22.78°ESajovolgyi — 47.97°N, 19.69°EGarrity — 37.86°N, 122.12°WMorrison — 41.91°N, 106.01°WOlduvai — 2.99°S, 35.35°ECalcaire de Saint-Ouen — 49.13°N, 3.35°ESanta Maria di Ciciliano — 42.65°N, 12.49°EFalun de Saucats — 44.66°N, 0.57°WElko — 40.82°N, 115.70°WCórcoles — 40.47°N, 2.68°WGrimmelfingen — 48.60°N, 10.72°EMulholland — 37.88°N, 122.18°WLameta — 23.17°N, 79.95°EOtibanda — 7.37°S, 146.67°E

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The named rock units Lymnaea has been recovered from, largest first. Drawn where the rock is now, not where it formed. One further formation holds fewer occurrences and is not listed. 57 occurrences have no formation on record, which is common for older literature.

Lymnaea and its relatives

Miocene

Where Lymnaea and its relatives were recorded in the Miocene.

Found in the same rock

1,591 taxa

The Paleobiology Database records 79 sites for Lymnaea, 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

52 references

Each of the 121 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. 40 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 Lymnaea

Credit
Dr. Lars Peters
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Lymnaea stagnalis · UMUT:HGP-PB:RM34097

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 itLymnaeidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lamarck 1799