Jakobsenius cretaceus

Jakobsenius cretaceus

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
JakobseniusPBDB
Diet
carnivorePBDB, for Decapoda
Life habit
epifaunalPBDB, for Decapoda
Motility
actively mobilePBDB, for Malacostraca
Vision
well-developedPBDB, for Malacostraca

Time the record covers

At most 10 million years on record.

Every occurrence read is dated to somewhere between 66 Mya and 56 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 0 of 3 occurrencesPaleocene — about 3 of 3 occurrencesPaleoceneEocene — about 0 of 3 occurrences66–66 Mya — about 0.1 occurrences66–65 Mya — about 0.2 occurrences65–65 Mya — about 0.2 occurrences65–65 Mya — about 0.2 occurrences65–64 Mya — about 0.2 occurrences64–64 Mya — about 0.2 occurrences64–64 Mya — about 0.2 occurrences64–63 Mya — about 0.2 occurrences63–63 Mya — about 0.2 occurrences63–62 Mya — about 0.2 occurrences62–62 Mya — about 0.2 occurrences62–62 Mya — about 0.2 occurrences62–61 Mya — about 0.1 occurrences61–61 Mya — about 0.0 occurrences61–61 Mya — about 0.0 occurrences61–60 Mya — about 0.0 occurrences60–60 Mya — about 0.0 occurrences60–60 Mya — about 0.0 occurrences60–59 Mya — about 0.0 occurrences59–59 Mya — about 0.0 occurrences59–58 Mya — about 0.0 occurrences58–58 Mya — about 0.0 occurrences58–58 Mya — about 0.0 occurrences58–57 Mya — about 0.0 occurrences57–57 Mya — about 0.0 occurrences57–57 Mya — about 0.0 occurrences57–56 Mya — about 0.0 occurrences56–56 Mya — about 0.0 occurrences66.5 Mya55.5 Mya

3 occurrences of Jakobsenius cretaceus on record, most of them in the Paleocene. 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

3 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

Calcaire de Vigny — 49.07°N, 1.92°EKambuhel — 47.75°N, 16.03°E

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The named rock units Jakobsenius cretaceus has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Jakobsenius cretaceus and its relatives

Paleocene

Where Jakobsenius cretaceus and its relatives were recorded in the Paleocene.

Found in the same rock

162 taxa

The Paleobiology Database records 3 sites for Jakobsenius cretaceus, 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 3 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 Jakobsenius cretaceus

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

No 3D scan of Jakobsenius cretaceus 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.

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

Keep going

What may have been alongside itJakobsenius through timeFormations of the PaleoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Segerberg 1900)