Poleumita

Poleumita is an extinct genus of medium-sized sea snails, fossil marine gastropods in the family Euomphalidae. This genus is known from the Silurian period.

Poleumita

the paleobear from Lontananza, Loreto, Peru · CC BY 2.0 · 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
EuomphalidaePBDB
Diet
suspension feeder, detritivorePBDB, for Euomphalidae
Life habit
epifaunalPBDB, for Euomphalidae
Motility
stationaryPBDB, for Euomphalidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 178 million years on record.

The record covers at least 438.1 Mya to 259.857 Mya. No occurrence read is dated outside 443.1 Mya to 254.14 Mya.

Ordovician — about 0 of 87 occurrencesSilurian — about 77 of 87 occurrencesSilurianDevonian — about 6 of 87 occurrencesDevonianCarboniferous — about 0 of 87 occurrencesPermian — about 4 of 87 occurrencesPermianEarly Triassic — about 0 of 87 occurrences447–440 Mya — about 1 occurrence440–434 Mya — about 7 occurrences434–427 Mya — about 44 occurrences427–421 Mya — about 24 occurrences421–414 Mya — about 4 occurrences414–408 Mya — about 1 occurrence408–401 Mya — about 0.8 occurrences401–394 Mya — about 0.8 occurrences394–388 Mya — about 0.1 occurrences263–257 Mya — about 2 occurrences257–250 Mya — about 2 occurrences438.1 Mya259.857 Mya447 Mya250 Mya

87 occurrences of Poleumita on record, most of them in the Silurian. 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

87 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

41 formations

Upper Visby — 57.50°N, 18.55°ESlite Beds — 57.72°N, 18.80°ESlite Beds — 57.75°N, 18.73°EBagovitsa — 48.68°N, 26.58°EBagovitsa — 48.55°N, 26.49°EBagovitsa — 48.76°N, 26.39°EZechstein — 50.33°N, 9.05°EZechstein — 51.63°N, 10.46°EZechstein — 50.90°N, 12.11°EHogklint — 57.50°N, 18.55°EHemse Beds — 57.28°N, 18.32°EHemse Beds — 57.37°N, 18.69°ESteinsfjorden — 68.79°N, 14.95°EMuch Wenlock Limestone — 52.50°N, 2.08°WDamery Beds — 52.37°N, 2.73°WDamery Beds — 51.88°N, 2.23°WCanon de Caballeros — 23.75°N, 99.26°WWabash — 40.42°N, 85.80°WCape Phillips — 75.80°N, 94.50°WBarlow Inlet — 74.82°N, 93.41°WPribalkhash — 47.22°N, 77.06°EPribalkhash — 48.24°N, 76.89°EPandzhrut — 39.35°N, 68.03°EGuelph — 43.34°N, 80.32°WGuelph — 44.18°N, 80.82°WBrassfield — 39.71°N, 84.13°WBrassfield — 39.34°N, 84.12°WSlite — 57.74°N, 18.49°EJaani — 58.62°N, 22.90°EPagegiai — 55.57°N, 21.45°ELockport — 43.15°N, 77.62°WLower Visby — 57.50°N, 18.55°EHalla Beds — 57.53°N, 18.43°EKlinteberg Beds — 57.53°N, 18.43°E

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The named rock units Poleumita has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 further formations hold fewer occurrences each and are not listed. 8 occurrences have no formation on record, which is common for older literature.

Poleumita and its relatives

Silurian

Where Poleumita and its relatives were recorded in the Silurian.

Found in the same rock

980 taxa

The Paleobiology Database records 68 sites for Poleumita, 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

38 references

Each of the 87 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. 26 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 Poleumita

Credit
the paleobear from Lontananza, Loreto, Peru
Licence
CC BY 2.0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itEuomphalidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Clarke and Ruedemann 1903