Gyraulus parvus

Gyraulus parvus is a species of freshwater snail in the family Planorbidae, the ram's horn snails. It is known by the common name ash gyro. It is native to much of North America and the Caribbean, where it occurs in Canada, the United States, Mexico, Hispaniola, Jamaica, and Cuba. It is also an introduced species in Eurasia, including Austria, the Czech Republic, France, Germany, and Israel.

A picture published with the record for Gyraulus parvus. What it shows has not been checked.

Smithsonian Environmental Research Center · 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.

Time the record covers

At least 2.4 million years on record.

The record covers at least 2.58 Mya to 129 ka. No occurrence read is dated outside 5.333 Mya to 11.7 ka.

Miocene — about 0 of 16 occurrencesPliocene — about 3 of 16 occurrencesPliocenePleistocene — about 13 of 16 occurrencesPleistoceneHolocene — about 0 of 16 occurrences5.4–5.3 Mya — about 0.1 occurrences5.3–5.1 Mya — about 0.1 occurrences5.1–4.9 Mya — about 0.1 occurrences4.9–4.7 Mya — about 0.2 occurrences4.7–4.5 Mya — about 0.2 occurrences4.5–4.3 Mya — about 0.2 occurrences4.3–4.1 Mya — about 0.2 occurrences4.1–3.9 Mya — about 0.2 occurrences3.9–3.7 Mya — about 0.2 occurrences3.7–3.5 Mya — about 0.2 occurrences3.5–3.3 Mya — about 0.2 occurrences3.3–3.1 Mya — about 0.2 occurrences3.1–2.9 Mya — about 0.2 occurrences2.9–2.7 Mya — about 0.2 occurrences2.7–2.5 Mya — about 0.2 occurrences2.5–2.3 Mya — about 0.3 occurrences2.3–2.1 Mya — about 0.3 occurrences2.1–1.9 Mya — about 0.3 occurrences1.9–1.8 Mya — about 0.3 occurrences1.8–1.6 Mya — about 0.3 occurrences1.6–1.4 Mya — about 0.3 occurrences1.4–1.2 Mya — about 0.6 occurrences1.2–972 ka Mya — about 0.6 occurrences972 ka–778 ka Mya — about 0.6 occurrences778 ka–583 ka Mya — about 0.6 occurrences583 ka–389 ka Mya — about 0.6 occurrences389 ka–194 ka Mya — about 0.7 occurrences194 ka–0 Mya — about 8 occurrences2.58 Mya129 ka5.8 Mya0 Mya

16 occurrences of Gyraulus parvus on record, most of them in the Pleistocene. 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

16 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

4 formations

Alturas — 41.49°N, 120.65°WAlturas — 40.16°N, 120.27°WSappa — 39.80°N, 98.10°WShuler — 32.71°N, 96.71°WFort Thompson — 26.76°N, 81.44°W

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The named rock units Gyraulus parvus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 occurrences have no formation on record, which is common for older literature.

Gyraulus parvus and its relatives

Pleistocene

Where Gyraulus parvus and its relatives were recorded in the Pleistocene.

Found in the same rock

340 taxa

The Paleobiology Database records 15 sites for Gyraulus parvus, 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

12 references

Each of the 16 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 Gyraulus parvus

Credit
Smithsonian Environmental Research Center
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan of Gyraulus parvus 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 itFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.