Trochoceras

Trochoceras is a genus of trochoidally coiled nautiloid cephalopods placed in the nautilid family Rutoceratidae that lived during the Middle and Late Devonian in what is now central Europe.

Trochoceras

Hectonichus · 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
RutoceratidaePBDB
Diet
carnivorePBDB, for Nautilida
Life habit
nektobenthicPBDB, for Nautilida
Motility
actively mobilePBDB, for Nautilida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At least 39 million years on record.

The record covers at least 450.2 Mya to 410.62 Mya. No occurrence read is dated outside 451 Mya to 399.5 Mya.

Ordovician — about 3 of 8 occurrencesOrdovicianSilurian — about 3 of 8 occurrencesSilurianDevonian — about 2 of 8 occurrencesDevonian452–450 Mya — about 1 occurrence450–448 Mya — about 0.8 occurrences448–447 Mya — about 0.4 occurrences447–445 Mya — about 0.3 occurrences423–422 Mya — about 1.0 occurrences422–420 Mya — about 2 occurrences420–418 Mya — about 0.3 occurrences415–413 Mya — about 0.1 occurrences413–411 Mya — about 0.7 occurrences411–409 Mya — about 0.3 occurrences409–407 Mya — about 0.2 occurrences407–406 Mya — about 0.2 occurrences406–404 Mya — about 0.2 occurrences404–402 Mya — about 0.2 occurrences402–400 Mya — about 0.2 occurrences400–398 Mya — about 0.1 occurrences450.2 Mya410.62 Mya452 Mya398 Mya

8 occurrences of Trochoceras on record, most of them in the Ordovician. 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.

Found in

5 formations

Amadjuak — 65.25°N, 73.17°WFiddlers Green — 42.85°N, 78.80°WSyracuse — 43.05°N, 76.15°WBønsnes — 59.98°N, 11.32°EPraha — 49.92°N, 14.07°E

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The named rock units Trochoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Trochoceras and its relatives

Ordovician

Where Trochoceras and its relatives were recorded in the Ordovician.

Found in the same rock

127 taxa

The Paleobiology Database records 7 sites for Trochoceras, 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

5 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 Trochoceras

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

No 3D scan of Trochoceras 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 itRutoceratidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Barrande in von Hauer 1848