Eucryptodira

Shuai Shao1, Yang Yang, Lan Li, Da-Yong Sun, Chang-Fu Zhou · CC BY 4.0 · via Wikidata/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
- CryptodiraPBDB
- Diet
- omnivorePBDB, for Cryptodira
- Life habit
- aquaticPBDB, for Cryptodira
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- freshwaterPBDB, for Cryptodira
Time the record covers
At least 170 million years on record.
The record covers at least 170.9 Mya to 11.7 ka. No occurrence read is dated outside 184.2 Mya to 0 Mya.
540 occurrences of Eucryptodira on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group. 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
540 occurrences- Early Jurassicunder 1%
- Middle Jurassic3%
- Late Jurassic6%
- Early Cretaceous16%
- Late Cretaceous35%
- Paleocene9%
- Eocene6%
- Oligocene2%
- Miocene12%
- Pliocene3%
- Pleistocene7%
- Holoceneunder 1%
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
129 formations
- Hell Creek Formation · Montana Group62
- Dinosaur Park Formation · Belly River Group28
- Lance Formation18
- Willwood Formation17
- Tudela Formation17
- Oldman Formation · Belly River Group16
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The named rock units Eucryptodira has been recovered from, largest first. Drawn where the rock is now, not where it formed. 105 further formations hold fewer occurrences each and are not listed. 98 occurrences have no formation on record, which is common for older literature.
Eucryptodira and its relatives
Late CretaceousWhere Eucryptodira and its relatives were recorded in the Late Cretaceous.
Found in the same rock
2,479 taxa- Chelydridae100 sites
- Trionychidae87 sites
- Baenidae74 sites
- Ceratopsidae72 sites
- Scapherpeton tectum68 sites
- Myledaphus bipartitus66 sites
- Anura58 sites
- Hadrosauridae57 sites
- Teleostei55 sites
- Opisthotriton kayi54 sites
- Champsosaurus53 sites
- Lepisosteus occidentalis53 sites
- Theropoda48 sites
- Adocus46 sites
- Paronychodon44 sites
- Crocodylia43 sites
- Lepisosteus40 sites
- Multituberculata40 sites
- Belonostomus longirostris39 sites
- Coriops amnicolus38 sites
- Aves37 sites
- Saurornitholestes langstoni35 sites
- Osteichthyes34 sites
- Paralbula casei34 sites
The Paleobiology Database records 453 sites for Eucryptodira, and this reads 240 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
253 references- Patterns of geographic variation in latest Cretaceous vertebrates: evidence from the turtle component33
- New turtles from the Paleogene of North America22
- Fossil Vertebrate Collections19
- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota17
- Amphibians and reptiles from the Early Miocene of the Bardenas Reales of Navarre (Ebro Basin, Iberian Peninsula)16
- Vertebrate microsite assemblages (exclusive of mammals) from the Foremost and Oldman Formations of the Judith River Group (Campanian) of southeastern Alberta: an illustrated guide16
- Contribution a l'etude des Cheloniens. Cheloniens continentaux due Cretace et du Tertiare de France15
- Paleontology of the Judith River Formation (Campanian) of Dinosaur National Park, Alberta, Canada: evidence from vertebrate microfossil locality12
- Taxonomic assessment of alligator snapping turtles (Chelydridae: Macrochelys), with the description of two new species from the southeastern United States9
- Paleoecology of an estuarine, incised-valley fill in the Dinosaur Park Formation (Judith River Group, Upper Cretaceous) of southern Alberta, Canada9
- Non-trionychid turtles from the Paleocene of Alberta, Canada8
- Turtles from the Kaiparowits Formation, Utah8
Each of the 540 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. 241 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 Eucryptodira
- Source
- Wikidata/Commons
- Credit
- Shuai Shao1, Yang Yang, Lan Li, Da-Yong Sun, Chang-Fu Zhou
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCryptodira through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Gaffney 1975