Planorbis

Planorbis is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs in the family Planorbidae, the ram's horn snails, or planorbids. All species in this genus have sinistral or left-coiling shells.

Planorbis

Ehrmann, Hermann Felix Paul (* 21st December 1868 – † 6th October 1937; Germany) · 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
PlanorbiniPBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda
Environment
freshwaterPBDB, for Planorbidae

Time the record covers

At least 372 million years on record.

The record covers at least 372.15 Mya to 129 ka. No occurrence read is dated outside 382.31 Mya to 11.7 ka.

Devonian — about 1 of 142 occurrencesCarboniferous — about 0 of 142 occurrencesPermian — about 0 of 142 occurrencesEarly Triassic — about 0 of 142 occurrencesMiddle Triassic — about 0 of 142 occurrencesLate Triassic — about 0 of 142 occurrencesEarly Jurassic — about 0 of 142 occurrencesMiddle Jurassic — about 0 of 142 occurrencesLate Jurassic — about 1 of 142 occurrencesEarly Cretaceous — about 2 of 142 occurrencesEarly CretaceousLate Cretaceous — about 1 of 142 occurrencesLate CretaceousPaleocene — about 1 of 142 occurrencesEocene — about 77 of 142 occurrencesOligocene — about 4 of 142 occurrencesMiocene — about 15 of 142 occurrencesPliocene — about 5 of 142 occurrencesPleistocene — about 35 of 142 occurrences390–377 Mya — about 0.5 occurrences377–364 Mya — about 0.5 occurrences156–143 Mya — about 1 occurrence143–130 Mya — about 2 occurrences78–65 Mya — about 1 occurrence65–52 Mya — about 4 occurrences52–39 Mya — about 15 occurrences39–26 Mya — about 61 occurrences26–13 Mya — about 7 occurrences13–0 Mya — about 50 occurrences372.15 Mya129 ka390 Mya0 Mya

142 occurrences of Planorbis on record, most of them in the Eocene. 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

142 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

39 formations

Headon Beds — 50.72°N, 1.59°WHeadon Beds — 50.75°N, 1.60°WHeadon Beds — 50.67°N, 1.08°WHeadon Beds — 50.63°N, 1.55°WBembridge Limestone — 50.67°N, 1.08°WOsborne Beds — 50.71°N, 1.10°WOsborne Beds — 50.66°N, 1.55°WKuldana — 33.78°N, 72.68°EKuldana — 33.62°N, 71.92°EKuldana — 33.60°N, 71.51°EHempstead — 50.72°N, 1.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WSables a Nummulites variolarius — 49.25°N, 2.50°ELower Headon Beds — 50.63°N, 1.55°WLower Headon Beds — 50.67°N, 1.10°WLower Headon Beds — 50.67°N, 1.53°WHeadon Hill — 50.67°N, 1.57°WArcadia — 27.89°N, 82.48°WUpper Headon Beds — 50.63°N, 1.55°WSan Pedro Sand — 33.74°N, 118.28°WLisbon — 31.50°N, 87.80°WWoolwich and Reading — 51.52°N, 0.08°WSubathu — 30.97°N, 77.02°EAfyon — 39.00°N, 31.00°EVirgin Hills — 18.00°S, 126.00°EMorrison — 41.89°N, 106.00°WBlackheath Beds — 51.43°N, 0.15°EVenta del Moro-Villatoya — 39.48°N, 1.35°WBembridge Marls — 50.71°N, 1.45°WMasmas — 24.48°N, 32.94°ESable de Vauroux-Saint-Antoine — 48.43°N, 2.15°ECalcaire de Saint-Ouen — 49.13°N, 3.35°E

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The named rock units Planorbis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 further formations hold fewer occurrences each and are not listed. 42 occurrences have no formation on record, which is common for older literature.

Planorbis and its relatives

Eocene

Where Planorbis and its relatives were recorded in the Eocene.

Found in the same rock

2,940 taxa

The Paleobiology Database records 101 sites for Planorbis, 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

62 references

Each of the 142 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. 50 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 Planorbis

Credit
Ehrmann, Hermann Felix Paul (* 21st December 1868 – † 6th October 1937; Germany)
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itPlanorbini through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Muller 1774