Isorthoceras

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

On record

Recorded, not inferred
Sits inside
ProteoceratidaePBDB
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 16 million years on record.

The record covers at least 455 Mya to 438.6 Mya. No occurrence read is dated outside 457.3 Mya to 432.9 Mya.

Ordovician — about 81 of 82 occurrencesOrdovicianSilurian — about 1 of 82 occurrencesSilurian458–457 Mya — about 1 occurrence457–456 Mya — about 4 occurrences456–455 Mya — about 4 occurrences455–454 Mya — about 3 occurrences454–454 Mya — about 8 occurrences454–453 Mya — about 14 occurrences453–452 Mya — about 8 occurrences452–451 Mya — about 5 occurrences451–450 Mya — about 6 occurrences450–449 Mya — about 7 occurrences449–448 Mya — about 3 occurrences448–448 Mya — about 3 occurrences448–447 Mya — about 3 occurrences447–446 Mya — about 3 occurrences446–445 Mya — about 3 occurrences445–444 Mya — about 2 occurrences444–443 Mya — about 2 occurrences443–443 Mya — about 0.6 occurrences439–438 Mya — about 0.0 occurrences438–437 Mya — about 0.1 occurrences437–437 Mya — about 0.1 occurrences437–436 Mya — about 0.1 occurrences436–435 Mya — about 0.1 occurrences435–434 Mya — about 0.1 occurrences434–433 Mya — about 0.1 occurrences433–432 Mya — about 0.1 occurrences455 Mya438.6 Mya457.8 Mya432.4 Mya

82 occurrences of Isorthoceras 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

82 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

33 formations

Boda Limestone — 60.97°N, 15.43°EBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EBoda Limestone — 60.97°N, 15.13°EVasalemma — 59.24°N, 24.29°EVasalemma — 59.23°N, 24.23°EKullsberg — 61.05°N, 15.20°EKullsberg — 60.92°N, 15.10°EDunleith — 43.00°N, 91.00°WLexington Limestone — 37.91°N, 84.26°WLexington Limestone — 38.15°N, 84.85°WLexington Limestone — 38.04°N, 84.85°WLexington Limestone — 37.84°N, 84.46°WLexington Limestone — 37.87°N, 84.63°WLexington Limestone — 38.36°N, 84.26°WMaquoketa — 43.28°N, 91.37°WMaquoketa — 45.00°N, 93.00°WWaynesville — 39.45°N, 83.83°WIon — 43.00°N, 91.00°WClays Ferry — 39.09°N, 84.54°WGlisstjärn — 61.05°N, 15.20°EBills Creek Shale — 43.42°N, 83.95°WBrainard — 42.94°N, 91.71°WScales — 42.48°N, 90.87°WPlatteville — 45.00°N, 93.00°WDecorah Shale — 45.00°N, 93.00°WCummingsville — 45.00°N, 93.00°WProsser Limestone — 45.00°N, 93.00°WMifflin — 43.00°N, 91.00°WGrand Detour — 43.00°N, 91.00°WNachusa — 43.00°N, 91.00°WQuimbys Mill — 43.00°N, 91.00°WGuttenberg — 43.00°N, 91.00°WWise Lake — 43.00°N, 91.00°WScales Shale — 43.00°N, 91.00°W

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The named rock units Isorthoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 further formations hold fewer occurrences each and are not listed.

Isorthoceras and its relatives

Ordovician

Where Isorthoceras and its relatives were recorded in the Ordovician.

Found in the same rock

773 taxa

The Paleobiology Database records 59 sites for Isorthoceras, 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

16 references

Each of the 82 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. 4 further references are not listed. 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 Isorthoceras was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

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

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

What may have been alongside itProteoceratidae through timeFormations of the OrdovicianThe world it lived on

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