Pachychilus

Pachychilus, common name the jute snails, is a genus of freshwater snails with an operculum, aquatic gastropod mollusk in the family Pachychilidae.

Pachychilus

Luis Ruiz Berti · CC BY-SA 3.0 · 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
MelaniidaePBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 23 million years on record.

The record covers at least 27.3 Mya to 3.6 Mya. No occurrence read is dated outside 33.9 Mya to 2.58 Mya.

Eocene — about 0 of 4 occurrencesOligocene — about 2 of 4 occurrencesOligoceneMiocene — about 0 of 4 occurrencesPliocene — about 2 of 4 occurrencesPliocenePleistocene — about 0 of 4 occurrences35–33 Mya — about 0.1 occurrences33–32 Mya — about 0.3 occurrences32–31 Mya — about 0.3 occurrences31–30 Mya — about 0.3 occurrences30–29 Mya — about 0.3 occurrences29–28 Mya — about 0.3 occurrences28–27 Mya — about 0.2 occurrences6.3–5.2 Mya — about 0.1 occurrences5.2–4.1 Mya — about 0.6 occurrences4.1–3.0 Mya — about 0.9 occurrences3.0–2.0 Mya — about 0.5 occurrences27.3 Mya3.6 Mya34.5 Mya2 Mya

4 occurrences of Pachychilus on record, most of them in the Oligocene. 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

4 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

2 formations

Mare — 10.00°N, 64.00°WMare — 10.61°N, 63.52°WMancora — 5.20°S, 80.63°W

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The named rock units Pachychilus has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Pachychilus and its relatives

Oligocene

Where Pachychilus and its relatives were recorded in the Oligocene.

Found in the same rock

134 taxa

The Paleobiology Database records 3 sites for Pachychilus, 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

3 references

Each of the 4 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 Pachychilus

Credit
Luis Ruiz Berti
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Pachychilus was found in Sketchfab.

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 itMelaniidae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lea