Allopleuron

Allopleuron is a genus of extinct sea turtle, which measured 2-to-2.5-metre long in life. The type species is Allopleuron hofmanni. It is a basal member of the clade Pancheloniidae, closely related to Protosphargis. Similar to Protosphargis, it was characterized by shell reduction.

Allopleuron

Metalerke · CC BY 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
CheloniidaePBDB
Diet
omnivorePBDB, for Cryptodira
Life habit
aquaticPBDB, for Cryptodira
Motility
actively mobilePBDB, for Osteichthyes
Environment
marinePBDB, for Chelonioidea

Time the record covers

At least 55 million years on record.

The record covers at least 89.8 Mya to 33.9 Mya. No occurrence read is dated outside 93.9 Mya to 27.3 Mya.

Late Cretaceous — about 5 of 9 occurrencesLate CretaceousPaleocene — about 0 of 9 occurrencesEocene — about 2 of 9 occurrencesEoceneOligocene — about 2 of 9 occurrencesOligocene95–93 Mya — about 0.2 occurrences93–91 Mya — about 0.6 occurrences91–88 Mya — about 0.2 occurrences84–81 Mya — about 0.6 occurrences81–79 Mya — about 0.6 occurrences79–77 Mya — about 0.6 occurrences77–74 Mya — about 0.6 occurrences74–72 Mya — about 0.6 occurrences72–70 Mya — about 0.4 occurrences70–68 Mya — about 0.4 occurrences68–65 Mya — about 0.2 occurrences42–40 Mya — about 0.7 occurrences40–38 Mya — about 1 occurrence35–33 Mya — about 0.3 occurrences33–31 Mya — about 0.7 occurrences31–28 Mya — about 0.7 occurrences28–26 Mya — about 0.3 occurrences89.8 Mya33.9 Mya95 Mya26 Mya

9 occurrences of Allopleuron 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

9 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

5 formations

Shorym — 43.79°N, 51.49°EShorym — 43.80°N, 51.75°EKunrade — 50.88°N, 5.93°EOerlinghausen — 52.14°N, 10.29°EBohlen — 51.19°N, 12.46°ERupel — 51.20°N, 12.38°E

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The named rock units Allopleuron has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Allopleuron and its relatives

Late Cretaceous

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

Found in the same rock

198 taxa

The Paleobiology Database records 9 sites for Allopleuron, 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

5 references

Each of the 9 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 content2

Picture of Allopleuron

Credit
Metalerke
Licence
CC BY 3.0
Commercial use
the licence allows it

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Allopleuron sp. · nhmuk:PV R4213

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 itCheloniidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Baur 1888