Perotrochus

Perotrochus

Shellnut · CC BY-SA 3.0 · via Wikidata/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
PleurotomariidaePBDB
Diet
carnivorePBDB, for Pleurotomariidae
Life habit
epifaunalPBDB, for Pleurotomariidae
Motility
actively mobilePBDB, for Pleurotomariidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 165 million years on record.

The record covers at least 170.9 Mya to 5.333 Mya. No occurrence read is dated outside 174.7 Mya to 3.6 Mya.

Early Jurassic — about 0 of 15 occurrencesMiddle Jurassic — about 1 of 15 occurrencesLate Jurassic — about 0 of 15 occurrencesEarly Cretaceous — about 0 of 15 occurrencesLate Cretaceous — about 1 of 15 occurrencesLate CretaceousPaleocene — about 0 of 15 occurrencesEocene — about 6 of 15 occurrencesEoceneOligocene — about 6 of 15 occurrencesMiocene — about 0 of 15 occurrencesPliocene — about 1 of 15 occurrencesPleistocene — about 0 of 15 occurrences178–172 Mya — about 0.7 occurrences172–166 Mya — about 0.3 occurrences89–83 Mya — about 0.0 occurrences83–77 Mya — about 0.5 occurrences77–71 Mya — about 0.4 occurrences59–54 Mya — about 2 occurrences54–48 Mya — about 1 occurrence48–42 Mya — about 0.8 occurrences42–36 Mya — about 2 occurrences36–30 Mya — about 2 occurrences30–24 Mya — about 4 occurrences24–18 Mya — about 0.4 occurrences6.1–178 ka Mya — about 1 occurrence170.9 Mya5.333 Mya178 Mya178 ka

15 occurrences of Perotrochus on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

15 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

8 formations

Red Bluff Tuff — 43.97°S, 176.59°WRed Bluff Tuff — 44.30°S, 176.25°WCastle Hayne — 34.23°N, 77.94°WKahuitara Tuff — 44.24°S, 176.24°WAlzey — 49.83°N, 7.72°EKattachi — 33.01°N, 130.48°EOtekaike Limestone — 44.64°S, 170.65°EManiyara Fort — 23.46°N, 68.60°EBrejning — 56.87°N, 8.64°E

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The named rock units Perotrochus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Perotrochus and its relatives

Eocene

Where Perotrochus and its relatives were recorded in the Eocene.

Found in the same rock

484 taxa

The Paleobiology Database records 11 sites for Perotrochus, 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

11 references

Each of the 15 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 content2

Picture of Perotrochus

Credit
Shellnut
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Photogrammetry

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Perotrochus amabilis · UF:Invertebrate Zoology:210413-Mollusca

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPleurotomariidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Fischer 1885