Pleurorthoceras

Pleurorthoceras, from Ancient Greek πλευρά (pleurá), meaning "rib or side", ὀρθός (orthós), meaning "straight", and κέρας (kéras), meaning "horn", is an orthocerid cephalopod from the Upper Ordovician of North America. The shell externally is like that of Michelinoceras in being long and slender with a circular cross section. It differs in having a subcentral siphuncle with somewhat inflated segments.

No picture of Pleurorthoceras was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pleurorthoceras, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
OrthoceratidaePBDB
Diet
carnivorePBDB, for Orthocerida
Life habit
nektonicPBDB, for Orthocerida
Motility
actively mobilePBDB, for Orthocerida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Orthocerida

Time the record covers

At least 7.6 million years on record.

The record covers at least 452.8 Mya to 445.2 Mya. No occurrence read is dated outside 453.9 Mya to 443.1 Mya.

Ordovician — about 16 of 16 occurrencesOrdovicianSilurian — about 0 of 16 occurrences454–454 Mya — about 0.8 occurrences454–453 Mya — about 1 occurrence453–453 Mya — about 1 occurrence453–452 Mya — about 0.5 occurrences452–452 Mya — about 0.5 occurrences452–452 Mya — about 0.3 occurrences452–451 Mya — about 0.1 occurrences451–451 Mya — about 0.2 occurrences451–450 Mya — about 0.4 occurrences450–450 Mya — about 0.4 occurrences450–450 Mya — about 0.4 occurrences450–449 Mya — about 0.5 occurrences449–449 Mya — about 0.6 occurrences449–449 Mya — about 0.6 occurrences449–448 Mya — about 0.6 occurrences448–448 Mya — about 0.6 occurrences448–447 Mya — about 0.6 occurrences447–447 Mya — about 0.6 occurrences447–447 Mya — about 0.6 occurrences447–446 Mya — about 0.6 occurrences446–446 Mya — about 0.6 occurrences446–445 Mya — about 0.4 occurrences445–445 Mya — about 0.5 occurrences445–445 Mya — about 0.8 occurrences445–444 Mya — about 0.8 occurrences444–444 Mya — about 0.8 occurrences444–443 Mya — about 0.8 occurrences443–443 Mya — about 0.6 occurrences452.8 Mya445.2 Mya454.4 Mya442.6 Mya

16 occurrences of Pleurorthoceras 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

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

7 formations

Nanzheng — 35.00°N, 108.00°EBull Fork — 39.35°N, 85.21°WBull Fork — 39.63°N, 84.92°WBull Fork — 39.48°N, 84.06°WBull Fork — 39.56°N, 84.73°WBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EVasalemma — 59.24°N, 24.29°EKullsberg — 61.05°N, 15.20°EKullsberg — 60.92°N, 15.10°EAmadjuak — 65.25°N, 73.17°WAkpatok — 65.25°N, 73.17°W

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

Pleurorthoceras and its relatives

Ordovician

Where Pleurorthoceras and its relatives were recorded in the Ordovician.

Found in the same rock

437 taxa

The Paleobiology Database records 13 sites for Pleurorthoceras, 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 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. 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 content0

No picture of Pleurorthoceras was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pleurorthoceras, or no answer at all. This entry cannot say which.

No 3D scan of Pleurorthoceras 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 itOrthoceratidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Flower 1962