Aconeceras

Aconeceras is an early Cretaceous ammonite included in the oppeliid subfamily Aconeceratidae, characterized by an involute, high-whorled, flat-sided shell that bears a finely serrate keel along the venter. Sutures have narrower and deeper elements than in Protaconeceras. Aconeceras has been found in western Europe, South Africa, and eastern Australia. Its stratigraphic range is from the Upper Barramian to the Lower Albian.

Aconeceras

Petruss · 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
AconeceratinaePBDB
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 15 million years on record.

The record covers at least 121.4 Mya to 106.3 Mya. No occurrence read is dated outside 125.77 Mya to 100.5 Mya.

Early Cretaceous — about 82 of 82 occurrencesEarly CretaceousLate Cretaceous — about 0 of 82 occurrences126–125 Mya — about 0.4 occurrences125–125 Mya — about 1 occurrence125–124 Mya — about 1 occurrence124–123 Mya — about 1 occurrence123–122 Mya — about 1 occurrence122–121 Mya — about 11 occurrences121–120 Mya — about 24 occurrences120–119 Mya — about 17 occurrences119–118 Mya — about 3 occurrences118–118 Mya — about 3 occurrences118–117 Mya — about 3 occurrences117–116 Mya — about 3 occurrences116–115 Mya — about 3 occurrences115–114 Mya — about 3 occurrences114–113 Mya — about 2 occurrences113–112 Mya — about 1 occurrence112–111 Mya — about 1 occurrence111–111 Mya — about 1 occurrence111–110 Mya — about 0.5 occurrences110–109 Mya — about 0.1 occurrences109–108 Mya — about 0.1 occurrences108–107 Mya — about 0.1 occurrences107–106 Mya — about 0.2 occurrences106–105 Mya — about 0.6 occurrences105–104 Mya — about 0.6 occurrences104–103 Mya — about 0.6 occurrences103–103 Mya — about 0.6 occurrences103–102 Mya — about 0.6 occurrences102–101 Mya — about 0.6 occurrences101–100 Mya — about 0.2 occurrences121.4 Mya106.3 Mya126.3 Mya100 Mya

82 occurrences of Aconeceras 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

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

18 formations

Sanganeh — 37.72°N, 56.32°ESanganeh — 37.72°N, 56.12°ESanganeh — 37.78°N, 56.33°ELes Graous — 43.84°N, 7.08°EFossil Bluff — 79.82°S, 55.00°WFossil Bluff — 72.00°S, 69.00°WFossil Bluff — 71.78°S, 68.75°WAtherfield Clay — 50.60°N, 1.32°WAtherfield Clay — 50.61°N, 1.36°WFerruginous Sands — 50.60°N, 1.32°WFerruginous Sands — 50.60°N, 1.35°WSarcheshmah — 37.72°N, 56.32°EWallumbilla — 16.52°S, 143.70°EValle Grande — 10.17°N, 63.42°WValle Grande — 10.42°N, 63.50°WWindalia Radiolarite — 23.25°S, 114.80°ERisan Aneiza — 30.79°N, 33.48°ERisan Aneiza — 30.80°N, 33.57°EHythe — 51.28°N, 0.53°EFolkestone — 52.55°N, 0.33°WMunday’s Hill Phosphatic Sandstone — 51.92°N, 0.67°WPluto Glacier — 71.75°S, 68.50°WIshido — 36.07°N, 138.83°EMaiolica — 45.75°N, 9.48°ENwofe Sandstone — 6.33°N, 8.26°ETodai — 35.79°N, 138.14°E

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The named rock units Aconeceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.

Aconeceras and its relatives

Early Cretaceous

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

Found in the same rock

428 taxa

The Paleobiology Database records 78 sites for Aconeceras, 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

22 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. 10 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 content2

Picture of Aconeceras

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

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itAconeceratinae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hyatt 1903