Eucalycoceras

Eucalycoceras is an extinct genus of cephalopods belonging to the Ammonite subclass.

Eucalycoceras

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 most 11 million years on record.

Every occurrence read is dated to somewhere between 100.5 Mya and 89.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Cretaceous — about 0 of 46 occurrencesLate Cretaceous — about 46 of 46 occurrencesLate Cretaceous101–100 Mya — about 2 occurrences100–100 Mya — about 3 occurrences100–99 Mya — about 3 occurrences99–99 Mya — about 3 occurrences99–99 Mya — about 3 occurrences99–98 Mya — about 3 occurrences98–98 Mya — about 3 occurrences98–97 Mya — about 3 occurrences97–97 Mya — about 3 occurrences97–97 Mya — about 3 occurrences97–96 Mya — about 3 occurrences96–96 Mya — about 3 occurrences96–96 Mya — about 3 occurrences96–95 Mya — about 3 occurrences95–95 Mya — about 3 occurrences95–94 Mya — about 3 occurrences94–94 Mya — about 3 occurrences94–94 Mya — about 0.6 occurrences94–93 Mya — about 0.1 occurrences93–93 Mya — about 0.1 occurrences93–92 Mya — about 0.1 occurrences92–92 Mya — about 0.1 occurrences92–92 Mya — about 0.1 occurrences92–91 Mya — about 0.1 occurrences91–91 Mya — about 0.1 occurrences91–90 Mya — about 0.1 occurrences90–90 Mya — about 0.1 occurrences90–90 Mya — about 0.1 occurrences101 Mya89.3 Mya

46 occurrences of Eucalycoceras 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

46 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

21 formations

Karai — 11.13°N, 79.00°EMancos Shale — 36.33°N, 109.82°WMancos Shale — 36.16°N, 109.84°WMancos Shale — 36.18°N, 109.88°WMancos Shale — 36.53°N, 110.09°WMancos Shale — 35.67°N, 106.96°WMancos Shale — 33.88°N, 106.75°WGreenhorn — 37.47°N, 104.11°WGreenhorn — 44.74°N, 103.83°WGreenhorn — 32.54°N, 107.71°WGreenhorn Limestone — 37.43°N, 104.10°WGreenhorn Limestone — 36.31°N, 104.49°WUnnamed Vocontian — 43.22°N, 5.53°EUnnamed Vocontian — 43.72°N, 7.20°EWhisky Bay — 64.17°S, 57.75°WFrontier — 42.90°N, 107.44°WFrontier — 41.96°N, 107.31°WRhoundjaïa — 33.34°N, 0.83°EWoodbine — 32.86°N, 97.06°WBeer Head Limestone — 51.08°N, 1.18°ECotinguiba — 10.76°S, 37.07°WBelle Fourche — 44.10°N, 104.67°WFahdène — 35.35°N, 9.23°ERedding — 40.65°N, 122.11°WCraie de Rouen — 49.08°N, 0.50°EMarno-calcaires bleutes — 43.83°N, 6.74°EIndidura — 21.93°N, 102.17°WBanc à harpax — 43.83°N, 6.74°ESopeira marl — 43.45°N, 3.83°WCraie d’Antifer — 43.80°N, 7.38°EDakota Sandstone — 34.95°N, 107.83°W

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The named rock units Eucalycoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Eucalycoceras and its relatives

Late Cretaceous

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

Found in the same rock

140 taxa

The Paleobiology Database records 44 sites for Eucalycoceras, 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 46 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 content1

Picture of Eucalycoceras

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Eucalycoceras was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itAcanthoceratinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Spath 1923)