Tryonia

Tryonia is a genus of freshwater snails in the family Hydrobiidae. This genus is sometimes placed in the family Cochliopidae.

Tryonia

via iDigBio · CC0 · via iDigBio. 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
CochliopidaePBDB
Diet
grazerPBDB, for Rissooidea
Life habit
epifaunalPBDB, for Rissooidea
Motility
actively mobilePBDB, for Rissooidea
Vision
limitedPBDB, for Gastropoda
Environment
freshwaterPBDB, for Cochliopidae

Time the record covers

At least 72 million years on record.

The record covers at least 72.2 Mya to 129 ka. No occurrence read is dated outside 83.6 Mya to 11.7 ka.

Late Cretaceous — about 2 of 16 occurrencesLate CretaceousPaleocene — about 0 of 16 occurrencesEocene — about 0 of 16 occurrencesOligocene — about 0 of 16 occurrencesMiocene — about 13 of 16 occurrencesMiocenePliocene — about 0 of 16 occurrencesPleistocene — about 1 of 16 occurrences85–82 Mya — about 0.2 occurrences82–80 Mya — about 0.5 occurrences80–77 Mya — about 0.5 occurrences77–74 Mya — about 0.5 occurrences74–71 Mya — about 0.3 occurrences26–23 Mya — about 0.1 occurrences23–20 Mya — about 0.7 occurrences20–17 Mya — about 0.7 occurrences17–14 Mya — about 4 occurrences14–11 Mya — about 5 occurrences11–8.5 Mya — about 2 occurrences8.5–5.7 Mya — about 0.9 occurrences2.8–0 Mya — about 1 occurrence72.2 Mya129 ka85 Mya0 Mya

16 occurrences of Tryonia on record, most of them in the Miocene. 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

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

3 formations

Pebas — 3.67°S, 71.77°WPebas — 3.48°S, 73.00°WPebas — 3.87°S, 71.38°WPebas — 4.02°S, 73.15°WPebas — 3.87°S, 73.48°WPebas — 3.00°S, 73.42°WNacatoch Sand — 32.10°N, 96.47°WPebas — 3.80°S, 70.25°WPebas — 0.05°S, 74.67°W

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The named rock units Tryonia 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.

Tryonia and its relatives

Miocene

Where Tryonia and its relatives were recorded in the Miocene.

Found in the same rock

141 taxa

The Paleobiology Database records 14 sites for Tryonia, 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 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Tryonia

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Tryonia 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 itCochliopidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Stimpson 1865