Barroisiceras

Barroisiceras is an acanthoceratacean ammonite from the Upper Cretaceous, Coniacian, included in the family Collignoniceratidae.

Barroisiceras

Hectonichus · 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
BarroisiceratinaePBDB
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 11 million years on record.

Every occurrence read is dated to somewhere between 93.9 Mya and 83.6 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 31 of 31 occurrencesLate Cretaceous94–94 Mya — about 0.3 occurrences94–93 Mya — about 0.5 occurrences93–93 Mya — about 0.5 occurrences93–93 Mya — about 0.5 occurrences93–92 Mya — about 0.5 occurrences92–92 Mya — about 0.5 occurrences92–91 Mya — about 0.5 occurrences91–91 Mya — about 0.5 occurrences91–91 Mya — about 0.5 occurrences91–90 Mya — about 0.5 occurrences90–90 Mya — about 0.5 occurrences90–90 Mya — about 2 occurrences90–89 Mya — about 2 occurrences89–89 Mya — about 2 occurrences89–88 Mya — about 2 occurrences88–88 Mya — about 2 occurrences88–88 Mya — about 2 occurrences88–87 Mya — about 2 occurrences87–87 Mya — about 2 occurrences87–86 Mya — about 2 occurrences86–86 Mya — about 2 occurrences86–86 Mya — about 2 occurrences86–85 Mya — about 0.3 occurrences85–85 Mya — about 0.1 occurrences85–85 Mya — about 0.1 occurrences85–84 Mya — about 0.1 occurrences84–84 Mya — about 0.1 occurrences84–83 Mya — about 0.0 occurrences94.4 Mya83.1 Mya

31 occurrences of Barroisiceras on record, most of them in the Late 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

31 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

13 formations

Mungo River — 4.44°N, 9.49°EMungo River — 4.50°N, 9.49°EMexcala — 19.43°N, 99.13°WCelendín — 6.68°S, 78.53°WCelendín — 6.87°S, 78.15°WCotinguiba — 10.76°S, 37.07°WTexanitid Marls — 42.17°N, 0.90°EAwgu Ndeaboh Shale — 6.05°N, 7.47°ESekule — 8.91°N, 12.00°EBarranquitas-Cayey — 18.45°N, 66.07°WLa Luna — 9.62°N, 70.35°WAustin Chalk — 29.12°N, 100.71°WChonta — 8.77°S, 74.53°WCelendin — 7.16°S, 78.51°WBarnes Island — 48.70°N, 122.78°W

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The named rock units Barroisiceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.

Barroisiceras and its relatives

Late Cretaceous

Where Barroisiceras and its relatives were recorded in the Late Cretaceous.

Found in the same rock

170 taxa

The Paleobiology Database records 27 sites for Barroisiceras, 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

16 references

Each of the 31 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. 4 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 Barroisiceras

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

3D model

Source
Sketchfab
Credit
SorbonNum
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 itBarroisiceratinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. de Grossouvre 1894