Acrioceras

Acrioceras is an extinct genus of cephalopods belonging to the ammonite subclass.

Acrioceras

Motekov · CC BY-SA 4.0 · 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
AncyloceratinaePBDB
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 least 4.3 million years on record.

The record covers at least 125.77 Mya to 121.4 Mya. No occurrence read is dated outside 132.6 Mya to 119.57 Mya.

Early Cretaceous — about 60 of 60 occurrencesEarly Cretaceous133–132 Mya — about 2 occurrences132–132 Mya — about 2 occurrences132–131 Mya — about 2 occurrences131–131 Mya — about 2 occurrences131–130 Mya — about 2 occurrences130–130 Mya — about 2 occurrences130–129 Mya — about 2 occurrences129–129 Mya — about 2 occurrences129–128 Mya — about 2 occurrences128–128 Mya — about 2 occurrences128–127 Mya — about 2 occurrences127–127 Mya — about 2 occurrences127–127 Mya — about 2 occurrences127–126 Mya — about 2 occurrences126–126 Mya — about 2 occurrences126–125 Mya — about 4 occurrences125–125 Mya — about 4 occurrences125–124 Mya — about 4 occurrences124–124 Mya — about 4 occurrences124–123 Mya — about 4 occurrences123–123 Mya — about 4 occurrences123–122 Mya — about 4 occurrences122–122 Mya — about 4 occurrences122–121 Mya — about 4 occurrences121–121 Mya — about 0.3 occurrences121–120 Mya — about 0.3 occurrences120–120 Mya — about 0.3 occurrences120–120 Mya — about 0.2 occurrences125.77 Mya121.4 Mya133.1 Mya119.1 Mya

60 occurrences of Acrioceras on record, most of them in the Early Cretaceous. 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

60 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

11 formations

Taboulouart — 30.87°N, 9.81°WTaboulouart — 30.72°N, 9.80°WTaboulouart — 30.61°N, 9.73°WMaiolica — 43.59°N, 12.54°EMaiolica — 43.53°N, 12.62°EMakatini — 27.17°S, 32.17°ETotoralillo — 27.81°S, 70.36°WTotoralillo — 28.35°S, 70.59°WTotoralillo — 28.05°S, 70.46°WSubway — 52.00°N, 10.00°EBudden Canyon — 40.42°N, 122.66°WSan Lucas — 18.53°N, 100.77°WIshido — 36.07°N, 138.83°EInagoe — 36.26°N, 137.13°EPaskenta — 40.13°N, 122.23°WSogukcam — 40.82°N, 42.15°E

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The named rock units Acrioceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 31 occurrences have no formation on record, which is common for older literature.

Acrioceras and its relatives

Early Cretaceous

Where Acrioceras and its relatives were recorded in the Early Cretaceous.

Found in the same rock

200 taxa

The Paleobiology Database records 54 sites for Acrioceras, 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

23 references

Each of the 60 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. 11 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 Acrioceras

Credit
Motekov
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Acrioceras 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 itAncyloceratinae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Hyatt 1900)