Plesiochelys
Plesiochelys is a genus of late Jurassic European and Asian turtle. The type species is Plesiochelys etalloni.

Jérémy Anquetin, Sylvie Deschamps, Julien Claude · 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
- PlesiochelyidaePBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Diapsida
Time the record covers
At least 28 million years on record.
The record covers at least 161.5 Mya to 132.6 Mya. No occurrence read is dated outside 174.7 Mya to 125.77 Mya.
43 occurrences of Plesiochelys on record, most of them in the Late Jurassic. 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
43 occurrencesThese 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
9 formations
- Reuchenette Formation22
- Sobral Formation2
- Weald Clay Formation · Wealden Group1
- Balabansai Formation1
- Mont-Lambert Formation1
- Portland Stone Formation · Portland Group1
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The named rock units Plesiochelys has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 occurrences have no formation on record, which is common for older literature.
Plesiochelys and its relatives
Late JurassicWhere Plesiochelys and its relatives were recorded in the Late Jurassic.
Found in the same rock
109 taxa- Tropidemys langii7 sites
- Goniopholis4 sites
- Ornithopoda4 sites
- Pycnodontidae4 sites
- Sauropoda4 sites
- Theropoda4 sites
- Tropidemys4 sites
- Bernissartia3 sites
- Caturus3 sites
- Lepidotes3 sites
- Polyacrodus3 sites
- Steneosaurus3 sites
- Callipurbeckia minor2 sites
- Heterodontus2 sites
- Hybodus2 sites
- Ichthyosaurus2 sites
- Machimosaurus hugii2 sites
- Palaeospinacidae2 sites
- Plesiochelyidae2 sites
- Plesiosauria2 sites
- Pleurosternon bullockii2 sites
- Pterodactyloidea2 sites
- Pterosauria2 sites
- Scheenstia mantelli2 sites
The Paleobiology Database records 28 sites for Plesiochelys, 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
24 references- The comparative osteology of Plesiochelys bigleri n. sp., a new coastal marine turtle from the Late Jurassic of Porrentruy (Switzerland)11
- Die Schildkröten aus dem oberen Jura (Malm) der Gegend von Solothurn4
- Synopsis Reptilium. Part I. Cataphracta. Tortoises, Crocodiles, Enaliosauria3
- New finds of the turtle Plesiochelys in the Upper Jurassic of Portugal and evaluation of its diversity in the Iberian Peninsula2
- Nouveaux restes de Vertébrés du Jurassique terminal du Boulonnais (Nord de la France) [New vertebrate remains from the latest Jurassic of the Boulonnais (northern France)]2
- A taxonomic revision of the Jurassic turtles Portlandemys and Plesiochelys2
- Portis, 18782
- Novel insights into the morphology of Plesiochelys bigleri from the early Kimmeridgian of Northwestern Switzerland1
- First report of Plesiochelys etalloni and Tropidemys langii from the Late Jurassic of the UK and the palaeobiogeography of plesiochelyid turtles1
- New data on the poorly-known Late Jurassic European turtles Thalassemys and Enaliochelys and description of a new basal eucryptodiran taxon1
- The turtles from the uppermost Jurassic and Early Cretaceous of Galve (Iberian Range, Spain): anatomical, systematic, biostratigraphic and palaeobiogeographical implications1
- Plesiochelys sp. (Testudines, Eucryptodira) de la Fm. Freixial (Jurásico Superior) en Ulsa (Torres Vedras, Portugal)1
Each of the 43 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. 12 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 Plesiochelys
- Source
- Wikipedia/Commons
- Credit
- Jérémy Anquetin, Sylvie Deschamps, Julien Claude
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Plesiochelys 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 itPlesiochelyidae through timeFormations of the Late JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Rütimeyer 1873