Calycoceras

Calycoceras is an extinct genus of cephalopods belonging to the subclass Ammonoidea and family Acanthoceratidae that lived during the Cenomanian stage of the Late Cretaceous, 100-94 Mya. Their shells had ornate ribs.

Calycoceras

Hectonichus · CC BY-SA 3.0 · 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
AcanthoceratinaePBDB
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 6.6 million years on record.

The record covers at least 100.5 Mya to 93.9 Mya. No occurrence read is dated outside 106.3 Mya to 89.8 Mya.

Early Cretaceous — about 1 of 206 occurrencesEarly CretaceousLate Cretaceous — about 205 of 206 occurrencesLate Cretaceous107–106 Mya — about 0.0 occurrences106–106 Mya — about 0.1 occurrences106–105 Mya — about 0.1 occurrences105–104 Mya — about 0.1 occurrences104–104 Mya — about 0.1 occurrences104–103 Mya — about 0.1 occurrences103–103 Mya — about 0.1 occurrences103–102 Mya — about 0.1 occurrences102–102 Mya — about 0.1 occurrences102–101 Mya — about 0.1 occurrences101–100 Mya — about 4 occurrences100–100 Mya — about 18 occurrences100–99 Mya — about 18 occurrences99–99 Mya — about 18 occurrences99–98 Mya — about 18 occurrences98–97 Mya — about 18 occurrences97–97 Mya — about 18 occurrences97–96 Mya — about 18 occurrences96–96 Mya — about 18 occurrences96–95 Mya — about 18 occurrences95–95 Mya — about 18 occurrences95–94 Mya — about 18 occurrences94–93 Mya — about 3 occurrences93–93 Mya — about 0.6 occurrences93–92 Mya — about 0.6 occurrences92–92 Mya — about 0.6 occurrences92–91 Mya — about 0.6 occurrences91–90 Mya — about 0.6 occurrences90–90 Mya — about 0.6 occurrences90–89 Mya — about 0.1 occurrences100.5 Mya93.9 Mya106.8 Mya89.3 Mya

206 occurrences of Calycoceras 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

206 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

57 formations

Greenhorn Limestone — 37.22°N, 103.60°WGreenhorn Limestone — 44.73°N, 103.73°WGreenhorn Limestone — 38.58°N, 98.45°WGreenhorn Limestone — 38.26°N, 104.70°WGreenhorn Limestone — 37.55°N, 104.07°WGreenhorn Limestone — 37.55°N, 104.06°WGreenhorn Limestone — 37.43°N, 104.11°WGreenhorn Limestone — 37.33°N, 104.10°WGreenhorn Limestone — 38.04°N, 101.91°WCraie de Rouen — 48.60°N, 0.63°ECraie de Rouen — 49.08°N, 0.50°ECraie de Rouen — 47.76°N, 0.28°ECraie de Rouen — 43.82°N, 6.68°ECraie de Rouen — 49.44°N, 1.09°ELower Chalk — 50.92°N, 2.23°WLower Chalk — 50.83°N, 2.55°WLower Chalk — 50.83°N, 2.60°WLower Chalk — 50.80°N, 2.67°WSanandinovo — 43.56°N, 24.98°EMancos Shale — 36.14°N, 109.82°WMancos Shale — 36.12°N, 109.91°WMancos Shale — 36.16°N, 109.84°WMancos Shale — 36.33°N, 109.82°WMancos Shale — 36.18°N, 109.88°WMancos Shale — 36.53°N, 110.09°WMancos Shale — 32.76°N, 108.57°WMancos Shale — 32.50°N, 107.70°WBeer Head Limestone — 51.08°N, 1.18°EBeer Head Limestone — 50.83°N, 2.45°WBeer Head Limestone — 50.77°N, 2.57°WBeer Head Limestone — 50.83°N, 2.97°WShuayb — 32.15°N, 36.11°EShuayb — 32.32°N, 35.67°EUnnamed Vocontian — 43.22°N, 5.53°EUnnamed Vocontian — 43.73°N, 6.90°ESables du Perche — 48.60°N, 0.63°EIeru — 5.51°S, 141.88°EIeru — 5.59°S, 142.15°EFahdène — 35.35°N, 9.23°EColorado — 32.50°N, 107.70°WColorado — 32.80°N, 108.40°WWhisky Bay — 64.17°S, 57.75°WWhisky Bay — 64.07°S, 58.42°WKarai — 11.13°N, 79.00°EAntelope — 39.34°N, 122.33°WAntelope — 39.36°N, 122.35°WAntelope — 39.43°N, 122.34°WDakota — 36.00°N, 111.00°WRaha — 28.81°N, 33.50°EMarno-calcaires bleutes — 43.83°N, 6.74°EBanc à harpax — 43.83°N, 6.74°EHolywell Nodular Chalk — 51.25°N, 0.15°WMoonkinu — 11.80°S, 130.40°EOdukpani — 5.20°N, 8.25°EOdukpani — 5.13°N, 8.34°ENagase — 33.75°N, 133.97°EHaida — 53.05°N, 131.78°W

Loading coastlines…

The named rock units Calycoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 33 further formations hold fewer occurrences each and are not listed. 23 occurrences have no formation on record, which is common for older literature.

Calycoceras and its relatives

Late Cretaceous

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

Found in the same rock

574 taxa

The Paleobiology Database records 144 sites for Calycoceras, 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

74 references

Each of the 206 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. 62 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 Calycoceras

Credit
Hectonichus
Licence
CC BY-SA 3.0
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 itAcanthoceratinae through timeFormations of the Late CretaceousThe world it lived on

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