Arctocephalites

Arctocephalites is an extinct ammonitic cephalopod genus from the Middle Jurassic with a wide northern distribution belonging to the stephanoceratoidean family, Cardioceratidae.

No picture of Arctocephalites 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 Arctocephalites, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ArctocephalitinaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 2.9 million years on record.

Every occurrence read is dated to somewhere between 168.2 Mya and 165.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Jurassic — about 61 of 61 occurrencesMiddle Jurassic168–168 Mya — about 0.4 occurrences168–168 Mya — about 3 occurrences168–168 Mya — about 3 occurrences168–168 Mya — about 3 occurrences168–168 Mya — about 3 occurrences168–168 Mya — about 3 occurrences168–167 Mya — about 3 occurrences167–167 Mya — about 3 occurrences167–167 Mya — about 3 occurrences167–167 Mya — about 3 occurrences167–167 Mya — about 3 occurrences167–167 Mya — about 3 occurrences167–167 Mya — about 3 occurrences167–166 Mya — about 3 occurrences166–166 Mya — about 3 occurrences166–166 Mya — about 3 occurrences166–166 Mya — about 3 occurrences166–166 Mya — about 3 occurrences166–166 Mya — about 3 occurrences166–166 Mya — about 3 occurrences166–166 Mya — about 3 occurrences166–165 Mya — about 3 occurrences165–165 Mya — about 3 occurrences165–165 Mya — about 0.4 occurrences168.7 Mya164.8 Mya

61 occurrences of Arctocephalites on record, most of them in the Middle Jurassic. 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

61 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

4 formations

Tuxedni — 62.18°N, 147.67°WTuxedni — 62.13°N, 147.67°WTuxedni — 61.92°N, 148.17°WTuxedni — 60.12°N, 152.70°WTuxedni — 59.97°N, 152.91°WTuxedni — 59.80°N, 153.22°WTuxedni — 59.77°N, 153.25°WTuxedni — 59.72°N, 153.23°WTuxedni — 59.71°N, 153.25°WSawtooth — 48.18°N, 112.88°WSawtooth — 47.92°N, 112.77°WSawtooth — 47.78°N, 112.69°WSawtooth — 47.72°N, 112.72°WSawtooth — 47.63°N, 112.71°WSawtooth — 47.62°N, 112.77°WSawtooth — 47.53°N, 112.79°WSawtooth — 47.52°N, 112.69°WMcConnell Island — 79.15°N, 93.40°WHeather — 59.71°N, 1.82°E

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

Arctocephalites and its relatives

Middle Jurassic

Where Arctocephalites and its relatives were recorded in the Middle Jurassic.

Found in the same rock

41 taxa

The Paleobiology Database records 47 sites for Arctocephalites, 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

3 references

Each of the 61 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 Arctocephalites 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 Arctocephalites, or no answer at all. This entry cannot say which.

No 3D scan of Arctocephalites 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 itArctocephalitinae through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.