Araxoceratidae

Araxoceratidae is an extinct family of ceratitid ammonites, cephalopods that were found throughout the world. They arose during the Permian and died out during the early Triassic. The species of the type genus Araxoceras are used as markers for various Permian epochs.

Araxoceratidae

Apokryltaros · 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
OtoceratoideaPBDB
Diet
carnivorePBDB, for Ceratitida
Life habit
nektonicPBDB, for Ceratitida
Motility
actively mobilePBDB, for Ceratitida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 8 million years on record.

Every occurrence read is dated to somewhere between 259.857 Mya and 251.902 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Permian — about 284 of 284 occurrencesPermianEarly Triassic — about 0 of 284 occurrences260–260 Mya — about 5 occurrences260–259 Mya — about 14 occurrences259–259 Mya — about 14 occurrences259–259 Mya — about 14 occurrences259–259 Mya — about 14 occurrences259–258 Mya — about 14 occurrences258–258 Mya — about 14 occurrences258–258 Mya — about 14 occurrences258–257 Mya — about 14 occurrences257–257 Mya — about 14 occurrences257–257 Mya — about 14 occurrences257–256 Mya — about 14 occurrences256–256 Mya — about 14 occurrences256–256 Mya — about 14 occurrences256–256 Mya — about 14 occurrences256–255 Mya — about 14 occurrences255–255 Mya — about 14 occurrences255–255 Mya — about 14 occurrences255–254 Mya — about 14 occurrences254–254 Mya — about 12 occurrences254–254 Mya — about 0.9 occurrences254–253 Mya — about 0.9 occurrences253–253 Mya — about 0.9 occurrences253–253 Mya — about 0.9 occurrences253–253 Mya — about 0.9 occurrences253–252 Mya — about 0.9 occurrences252–252 Mya — about 0.9 occurrences252–252 Mya — about 0.3 occurrences260.4 Mya251.4 Mya

284 occurrences of Araxoceratidae on record, most of them in the Permian. 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

284 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

22 formations

Loping — 27.40°N, 114.60°ELoping — 27.50°N, 114.50°ELoping — 28.20°N, 115.77°ELoping — 27.91°N, 114.45°ELoping — 27.40°N, 114.70°ELoping — 28.40°N, 115.35°ELoping — 27.95°N, 114.50°ELoping — 28.10°N, 115.78°ELoping — 28.10°N, 115.35°EAkhura — 39.60°N, 45.15°EAkhura — 39.56°N, 45.21°EAkhura — 39.57°N, 45.26°EAkhura — 38.98°N, 45.53°EAkhura — 39.45°N, 45.23°EHambast — 30.91°N, 53.22°EHambast — 31.56°N, 52.44°EHeshan — 23.70°N, 109.32°EAkhura — 39.54°N, 45.43°EAkhura — 39.84°N, 45.05°EAkhura — 39.95°N, 44.88°EWujiaping — 32.62°N, 105.86°EWujiaping — 30.30°N, 109.50°EWujiaping — 30.91°N, 117.82°EWujiaping — 30.92°N, 118.33°ESuenosaki — 38.73°N, 141.56°EJulfa — 38.94°N, 45.51°ELongtan — 31.00°N, 120.00°ELongtan — 30.16°N, 115.14°ELongtan — 27.01°N, 100.20°ELongtan — 31.08°N, 119.71°ELongtan — 27.25°N, 111.75°ELongtan — 27.82°N, 111.91°EDalong — 32.62°N, 105.86°EDalong — 32.31°N, 105.46°EKhura — 39.53°N, 45.37°EJulfa — 38.98°N, 45.52°ELyudyanza — 43.13°N, 133.24°ELa Colorada — 26.36°N, 102.91°WToyoma — 38.80°N, 141.55°EHuai Tak — 18.70°N, 99.89°EShuizhutang — 24.92°N, 112.40°ELa Difunta — 26.40°N, 102.91°WTiefoshan — 32.58°N, 105.86°ECaoxian — 31.64°N, 117.85°EShaiwa — 25.59°N, 106.15°EGreville — 40.90°S, 173.79°E

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The named rock units Araxoceratidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.

Araxoceratidae and its relatives

Permian

Where Araxoceratidae and its relatives were recorded in the Permian.

Found in the same rock

430 taxa

The Paleobiology Database records 120 sites for Araxoceratidae, 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

36 references

Each of the 284 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. 24 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 content1

Picture of Araxoceratidae

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

No 3D scan of Araxoceratidae 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 itOtoceratoidea through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ruzhencev 1959