Eubostrychoceras

Eubostrychoceras is a genus of helically wound, corkscrew form, heteromorph ammonite which lived during the Upper Cretaceous. The genus is included in the ancycleratid family Nostoceratidae.

Eubostrychoceras

Momotarou2012 · 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
NostoceratidaePBDB
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 6.2 million years on record.

The record covers at least 89.8 Mya to 83.6 Mya. No occurrence read is dated outside 93.9 Mya to 72.2 Mya.

Late Cretaceous — about 64 of 64 occurrencesLate Cretaceous94–94 Mya — about 3 occurrences94–93 Mya — about 8 occurrences93–92 Mya — about 8 occurrences92–91 Mya — about 8 occurrences91–91 Mya — about 8 occurrences91–90 Mya — about 8 occurrences90–89 Mya — about 1 occurrence89–88 Mya — about 0.6 occurrences88–88 Mya — about 0.6 occurrences88–87 Mya — about 0.6 occurrences87–86 Mya — about 0.6 occurrences86–85 Mya — about 2 occurrences85–85 Mya — about 3 occurrences85–84 Mya — about 3 occurrences84–83 Mya — about 1 occurrence83–82 Mya — about 0.7 occurrences82–82 Mya — about 0.7 occurrences82–81 Mya — about 0.7 occurrences81–80 Mya — about 0.7 occurrences80–79 Mya — about 0.7 occurrences79–79 Mya — about 0.7 occurrences79–78 Mya — about 0.7 occurrences78–77 Mya — about 0.7 occurrences77–76 Mya — about 0.7 occurrences76–75 Mya — about 0.7 occurrences75–75 Mya — about 0.7 occurrences75–74 Mya — about 0.7 occurrences74–73 Mya — about 0.7 occurrences73–72 Mya — about 0.7 occurrences72–72 Mya — about 0.2 occurrences89.8 Mya83.6 Mya94.4 Mya71.7 Mya

64 occurrences of Eubostrychoceras 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

64 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

24 formations

Saku — 44.11°N, 142.00°ESaku — 44.03°N, 141.95°ESaku — 43.05°N, 142.12°ESaku — 43.08°N, 142.00°ESaku — 43.05°N, 142.18°ESanta Marta — 63.75°S, 58.00°WLewes Nodular Chalk — 50.75°N, 2.97°WLewes Nodular Chalk — 51.90°N, 0.26°WLewes Nodular Chalk — 51.87°N, 0.52°WFrontier — 41.77°N, 107.08°WFrontier — 42.86°N, 106.56°WFrontier — 42.85°N, 106.54°WFrontier — 42.85°N, 106.53°WMancos Shale — 32.55°N, 106.57°WAnacacho Limestone — 29.35°N, 99.14°WAnacacho Limestone — 29.19°N, 100.30°WHidden Lake — 63.75°S, 58.00°WStrehlen — 51.03°N, 13.77°EStrehlen — 51.16°N, 13.59°ECarlile Shale — 44.45°N, 104.91°WCarlile Shale — 43.85°N, 104.25°WUpper Chalk — 51.56°N, 1.34°WUpper Chalk — 51.25°N, 0.57°WNagareya — 44.23°N, 141.99°ENagareya — 43.22°N, 142.01°EMatanuska — 61.87°N, 147.35°WOguwa — 33.25°N, 132.75°ESant Corneli — 42.17°N, 0.90°EBavnodde Greensand — 55.12°N, 14.75°EBykov — 50.16°N, 155.26°ECarlile — 43.95°N, 103.14°WCody Shale — 44.16°N, 106.77°WPender — 49.69°N, 125.04°WSidney Island — 48.60°N, 123.27°WHaslam — 49.19°N, 124.15°WGober Chalk — 33.56°N, 95.72°WKunitan — 40.11°N, 141.81°ESalder — 52.07°N, 8.35°E

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The named rock units Eubostrychoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Eubostrychoceras and its relatives

Late Cretaceous

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

Found in the same rock

268 taxa

The Paleobiology Database records 62 sites for Eubostrychoceras, 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

27 references

Each of the 64 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. 15 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 Eubostrychoceras

Credit
Momotarou2012
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Eubostrychoceras 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 itNostoceratidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Matsumoto 1967)