Brancoceras

Brancoceras is a rather small, strongly ribbed, acanthoceratacean ammonite from the Albian stage of the Lower Cretaceous, the shell evolute with a subquadrate whorl section and rounded venter. The suture forms a finely squiggly line with well-defined lobes and saddles. Brancoceras (Eubrancoceras) aegoceratoides reached a diameter of at least 4.2 centimetres (1.7 in).

Brancoceras

via iDigBio · CC BY · via iDigBio. 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
BrancoceratinaePBDB
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 3.8 million years on record.

The record covers at least 110.1 Mya to 106.3 Mya. No occurrence read is dated outside 113.2 Mya to 93.9 Mya.

Early Cretaceous — about 6 of 7 occurrencesEarly CretaceousLate Cretaceous — about 1 of 7 occurrencesLate Cretaceous114–113 Mya — about 0.1 occurrences113–112 Mya — about 0.4 occurrences112–112 Mya — about 0.4 occurrences112–111 Mya — about 0.4 occurrences111–110 Mya — about 0.4 occurrences110–110 Mya — about 0.5 occurrences110–109 Mya — about 0.5 occurrences109–108 Mya — about 0.5 occurrences108–108 Mya — about 0.5 occurrences108–107 Mya — about 0.5 occurrences107–106 Mya — about 0.5 occurrences106–106 Mya — about 0.2 occurrences106–105 Mya — about 0.2 occurrences105–104 Mya — about 0.2 occurrences104–104 Mya — about 0.2 occurrences104–103 Mya — about 0.2 occurrences103–102 Mya — about 0.2 occurrences102–102 Mya — about 0.2 occurrences102–101 Mya — about 0.2 occurrences101–100 Mya — about 0.1 occurrences100–99 Mya — about 0.1 occurrences99–99 Mya — about 0.1 occurrences99–98 Mya — about 0.1 occurrences98–97 Mya — about 0.1 occurrences97–97 Mya — about 0.1 occurrences97–96 Mya — about 0.1 occurrences96–95 Mya — about 0.1 occurrences95–95 Mya — about 0.1 occurrences95–94 Mya — about 0.1 occurrences94–93 Mya — about 0.0 occurrences110.1 Mya106.3 Mya113.7 Mya93.4 Mya

7 occurrences of Brancoceras 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

7 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

4 formations

Ambarimaninga — 16.50°S, 46.00°EGrès verts helvétiques — 45.90°N, 6.34°ENapo — 1.03°S, 77.65°WChonta — 4.47°S, 77.62°W

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The named rock units Brancoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Brancoceras and its relatives

Early Cretaceous

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

Found in the same rock

149 taxa

The Paleobiology Database records 6 sites for Brancoceras, 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

6 references

Each of the 7 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 Brancoceras

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Brancoceras 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 itBrancoceratinae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Steinmann 1881