Eutrephoceras expansum

Eutrephoceras expansum

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
EutrephocerasPBDB
Diet
carnivorePBDB, for Nautilidae
Life habit
nektonicPBDB, for Nautilidae
Motility
actively mobilePBDB, for Nautilidae
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 6.6 million years on record.

Every occurrence read is dated to somewhere between 100.5 Mya and 93.9 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 5 occurrencesLate Cretaceous — about 5 of 5 occurrencesLate Cretaceous101–100 Mya — about 0.0 occurrences100–100 Mya — about 0.2 occurrences100–100 Mya — about 0.2 occurrences100–100 Mya — about 0.2 occurrences100–99 Mya — about 0.2 occurrences99–99 Mya — about 0.2 occurrences99–99 Mya — about 0.2 occurrences99–99 Mya — about 0.2 occurrences99–98 Mya — about 0.2 occurrences98–98 Mya — about 0.2 occurrences98–98 Mya — about 0.2 occurrences98–98 Mya — about 0.2 occurrences98–97 Mya — about 0.2 occurrences97–97 Mya — about 0.2 occurrences97–97 Mya — about 0.2 occurrences97–97 Mya — about 0.2 occurrences97–96 Mya — about 0.2 occurrences96–96 Mya — about 0.2 occurrences96–96 Mya — about 0.2 occurrences96–96 Mya — about 0.2 occurrences96–95 Mya — about 0.2 occurrences95–95 Mya — about 0.2 occurrences95–95 Mya — about 0.2 occurrences95–95 Mya — about 0.2 occurrences95–94 Mya — about 0.2 occurrences94–94 Mya — about 0.2 occurrences94–94 Mya — about 0.2 occurrences94–94 Mya — about 0.0 occurrences101 Mya93.4 Mya

5 occurrences of Eutrephoceras expansum 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

5 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

2 formations

Beer Head Limestone — 51.08°N, 1.18°EBeer Head Limestone — 50.75°N, 2.33°WBeer Head Limestone — 50.83°N, 2.45°WWest Melbury Marly Chalk — 50.59°N, 1.24°W

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The named rock units Eutrephoceras expansum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Eutrephoceras expansum and its relatives

Late Cretaceous

Where Eutrephoceras expansum and its relatives were recorded in the Late Cretaceous.

Found in the same rock

94 taxa

The Paleobiology Database records 5 sites for Eutrephoceras expansum, 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

3 references

Each of the 5 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Eutrephoceras expansum

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

No 3D scan of Eutrephoceras expansum 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itEutrephoceras through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Sowerby 1824)