Anisus
Searched as Anisus hilgendorfi subcarinata. The Paleobiology Database treats Anisus as the accepted name.

Francisco Welter Schultes · CC BY-SA 2.5 · via Wikidata/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
- PlanorbidaePBDB
- Life habit
- epifaunalPBDB, for Gastropoda
- Motility
- actively mobilePBDB, for Gastropoda
- Vision
- limitedPBDB, for Gastropoda
- Environment
- freshwaterPBDB, for Planorbidae
Time the record covers
At most 2.8 million years on record.
Every occurrence read is dated to somewhere between 13.82 Mya and 11.1 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Anisus 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
2 occurrences- Miocene100%
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
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The named rock units Anisus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Anisus and its relatives
MioceneWhere Anisus and its relatives were recorded in the Miocene.
Found in the same rock
542 taxa- Vertigo10 sites
- Pisidium9 sites
- Planorbis7 sites
- Gastrocopta nouletiana6 sites
- Limax6 sites
- Carychium minimum5 sites
- Gyraulus5 sites
- Prososthenia5 sites
- Succinea5 sites
- Vallonia pulchella5 sites
- Acanthinula4 sites
- Argna oppoliensis4 sites
- Bithynia jurinaci4 sites
- Carychium sandbergeri4 sites
- Cepaea4 sites
- Discus pleuradrus4 sites
- Hydrobia4 sites
- Hyla4 sites
- Latonia gigantea4 sites
- Lymnaea4 sites
- Nesovitrea disciformis4 sites
- Rana4 sites
- Truncatellina4 sites
- Vertigo (Vertigo) callosa4 sites
The Paleobiology Database records 30 sites for Anisus, 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
1 referenceEach of the 2 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Anisus
- Source
- Wikidata/Commons
- Credit
- Francisco Welter Schultes
- Licence
- CC BY-SA 2.5
- Commercial use
- the licence allows it
No 3D scan of Anisus 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPlanorbidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Studer 1820