Physella

Physella is a genus of small, left-handed or sinistral, air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Physidae.

Physella

N yotarou · CC BY 2.5 · 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
PhyselliniPBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda
Environment
freshwaterPBDB, for Physidae

Time the record covers

At least 65 million years on record.

The record covers at least 66 Mya to 129 ka. No occurrence read is dated outside 72.2 Mya to 11.7 ka.

Late Cretaceous — about 1 of 8 occurrencesLate CretaceousPaleocene — about 0 of 8 occurrencesEocene — about 2 of 8 occurrencesEoceneOligocene — about 0 of 8 occurrencesMiocene — about 0 of 8 occurrencesPliocene — about 0 of 8 occurrencesPleistocene — about 5 of 8 occurrences74–71 Mya — about 0.2 occurrences71–69 Mya — about 0.4 occurrences69–66 Mya — about 0.4 occurrences66–64 Mya — about 0.0 occurrences56–54 Mya — about 0.3 occurrences54–52 Mya — about 0.3 occurrences52–49 Mya — about 0.3 occurrences49–47 Mya — about 0.1 occurrences42–39 Mya — about 0.5 occurrences39–37 Mya — about 0.5 occurrences2.5–0 Mya — about 5 occurrences66 Mya129 ka74 Mya0 Mya

8 occurrences of Physella on record, most of them in the Pleistocene. 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

8 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

5 formations

Bermont — 27.70°N, 82.50°WBermont — 27.72°N, 82.43°WFort Thompson — 27.72°N, 82.43°WFort Thompson — 26.76°N, 81.44°WCook Mountain — 30.64°N, 96.52°WReklaw — 30.81°N, 96.65°WChorrillo — 50.52°S, 72.56°W

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The named rock units Physella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Physella and its relatives

Pleistocene

Where Physella and its relatives were recorded in the Pleistocene.

Found in the same rock

640 taxa

The Paleobiology Database records 7 sites for Physella, 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

6 references

Each of the 8 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 Physella

Credit
N yotarou
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan of Physella 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 itPhysellini through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Haldeman 1849