Arnioceras arnouldi

Arnioceras arnouldi

Paul Antun · CC0 · via GBIF. 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
ArniocerasPBDB
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 27 million years on record.

Every occurrence read is dated to somewhere between 201.4 Mya and 174.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Triassic — about 0 of 27 occurrencesEarly Jurassic — about 27 of 27 occurrencesEarly JurassicMiddle Jurassic — about 0 of 27 occurrences202–201 Mya — about 0.0 occurrences201–200 Mya — about 0.1 occurrences200–199 Mya — about 1 occurrence199–198 Mya — about 3 occurrences198–197 Mya — about 3 occurrences197–196 Mya — about 3 occurrences196–195 Mya — about 3 occurrences195–195 Mya — about 3 occurrences195–194 Mya — about 3 occurrences194–193 Mya — about 3 occurrences193–192 Mya — about 0.1 occurrences192–191 Mya — about 0.1 occurrences191–190 Mya — about 0.1 occurrences190–189 Mya — about 0.1 occurrences189–188 Mya — about 0.1 occurrences188–187 Mya — about 0.1 occurrences187–186 Mya — about 0.1 occurrences186–185 Mya — about 0.1 occurrences185–184 Mya — about 0.1 occurrences184–183 Mya — about 0.1 occurrences183–182 Mya — about 0.1 occurrences182–182 Mya — about 0.1 occurrences182–181 Mya — about 0.1 occurrences181–180 Mya — about 0.1 occurrences180–179 Mya — about 0.1 occurrences179–178 Mya — about 0.1 occurrences178–177 Mya — about 0.1 occurrences177–176 Mya — about 0.1 occurrences176–175 Mya — about 0.1 occurrences175–174 Mya — about 0.0 occurrences201.9 Mya174.2 Mya

27 occurrences of Arnioceras arnouldi on record, most of them in the Early 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

27 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

10 formations

Sunrise — 38.66°N, 118.19°WSunrise — 38.89°N, 117.87°WInklin — 59.31°N, 133.84°WInklin — 59.32°N, 133.89°WInklin — 59.42°N, 134.00°WIsztimér — 47.18°N, 17.83°ESierra de Santa Rosa — 30.63°N, 112.57°WHarbledown — 50.58°N, 127.47°WTalkeetna — 57.74°N, 155.40°WIsztimér Limestone — 47.18°N, 17.88°EOust — 36.52°N, 10.06°ELower Lias — 51.80°N, 1.88°WBroadford Beds — 57.25°N, 5.87°W

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The named rock units Arnioceras arnouldi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Arnioceras arnouldi and its relatives

Early Jurassic

Where Arnioceras arnouldi and its relatives were recorded in the Early Jurassic.

Found in the same rock

100 taxa

The Paleobiology Database records 9 sites for Arnioceras arnouldi, 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

11 references

Each of the 27 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 Arnioceras arnouldi

Source
GBIF
Credit
Paul Antun
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Arnioceras arnouldi 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.

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

Keep going

What may have been alongside itArnioceras through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dumortier 1867)