Chrysostoma

Chrysostoma is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.

Chrysostoma

G.W. Tryon · 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
MonodontinaePBDB
Diet
grazerPBDB, for Trochidae
Life habit
epifaunalPBDB, for Trochidae
Motility
actively mobilePBDB, for Trochidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 264 million years on record.

The record covers at least 264.28 Mya to 129 ka. No occurrence read is dated outside 266.9 Mya to 11.7 ka.

Permian — about 4 of 8 occurrencesEarly Triassic — about 0 of 8 occurrencesMiddle Triassic — about 0 of 8 occurrencesLate Triassic — about 0 of 8 occurrencesEarly Jurassic — about 1 of 8 occurrencesEarly JurassicMiddle Jurassic — about 0 of 8 occurrencesLate Jurassic — about 1 of 8 occurrencesEarly Cretaceous — about 0 of 8 occurrencesLate Cretaceous — about 0 of 8 occurrencesPaleocene — about 0 of 8 occurrencesEocene — about 0 of 8 occurrencesOligocene — about 0 of 8 occurrencesMiocene — about 0 of 8 occurrencesPliocene — about 1 of 8 occurrencesPleistocene — about 1 of 8 occurrences272–263 Mya — about 4 occurrences200–191 Mya — about 0.3 occurrences191–181 Mya — about 0.7 occurrences154–145 Mya — about 1 occurrence9.1–0 Mya — about 2 occurrences264.28 Mya129 ka272 Mya0 Mya

8 occurrences of Chrysostoma on record, most of them in the Permian. 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

8 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.

Chrysostoma and its relatives

Permian

Where Chrysostoma and its relatives were recorded in the Permian.

Found in the same rock

433 taxa

The Paleobiology Database records 7 sites for Chrysostoma, 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

6 references

Each of the 8 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 Chrysostoma

Credit
G.W. Tryon
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Chrysostoma 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 itMonodontinae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Swainson 1840