Amnicola

Amnicola is a genus of very small freshwater snails which have an operculum. Amnicola species are aquatic prosobranch gastropod mollusks belonging to the family Amnicolidae according to the taxonomy of the Gastropoda.

Amnicola

Richard Ellsworth Call (1856-1917, U.S.A.) · 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
AmnicolidaePBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda
Environment
freshwaterPBDB, for Amnicolidae

Time the record covers

At least 168 million years on record.

The record covers at least 168.2 Mya to 129 ka. No occurrence read is dated outside 170.9 Mya to 11.7 ka.

Middle Jurassic — about 7 of 20 occurrencesLate Jurassic — about 0 of 20 occurrencesEarly Cretaceous — about 0 of 20 occurrencesLate Cretaceous — about 0 of 20 occurrencesPaleocene — about 1 of 20 occurrencesEocene — about 0 of 20 occurrencesOligocene — about 2 of 20 occurrencesMiocene — about 2 of 20 occurrencesMiocenePliocene — about 3 of 20 occurrencesPleistocene — about 5 of 20 occurrences174–169 Mya — about 4 occurrences169–163 Mya — about 3 occurrences70–64 Mya — about 0.2 occurrences64–58 Mya — about 0.6 occurrences58–52 Mya — about 0.2 occurrences35–29 Mya — about 0.7 occurrences29–23 Mya — about 0.9 occurrences23–17 Mya — about 0.4 occurrences17–12 Mya — about 2 occurrences5.8–0 Mya — about 8 occurrences168.2 Mya129 ka174 Mya0 Mya

20 occurrences of Amnicola on record, most of them in the Middle Jurassic. 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

20 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

7 formations

Charlton — 31.16°N, 81.86°WHepingxiang — 25.26°N, 99.57°EHepingxiang — 25.32°N, 100.24°EHepingxiang — 25.65°N, 99.95°EZhanghe — 25.17°N, 102.01°EArcadia — 27.89°N, 82.48°WShuler — 32.71°N, 96.71°WUpper Lufeng — 25.17°N, 102.08°ECareaga Sandstone — 34.74°N, 120.41°W

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The named rock units Amnicola has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.

Amnicola and its relatives

Middle Jurassic

Where Amnicola and its relatives were recorded in the Middle Jurassic.

Found in the same rock

369 taxa

The Paleobiology Database records 14 sites for Amnicola, 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 20 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 Amnicola

Credit
Richard Ellsworth Call (1856-1917, U.S.A.)
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Amnicola was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itAmnicolidae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gould and Haldeman 1841