Chelydroidea
No picture of Chelydroidea was found. Wikidata and iDigBio were searched and had none. Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Chelydroidea, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- EucryptodiraPBDB
- Diet
- omnivorePBDB, for Cryptodira
- Life habit
- aquaticPBDB, for Cryptodira
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- freshwaterPBDB, for Cryptodira
Time the record covers
At least 121 million years on record.
The record covers at least 121.4 Mya to 11.7 ka. No occurrence read is dated outside 125.77 Mya to 0 Mya.
331 occurrences of Chelydroidea 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
331 occurrences- Early Cretaceousunder 1%
- Late Cretaceous42%
- Paleocene9%
- Eocene10%
- Oligocene3%
- Miocene20%
- Pliocene4%
- Pleistocene11%
- Holocene2%
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
56 formations
- Hell Creek Formation · Montana Group55
- Dinosaur Park Formation · Belly River Group26
- Willwood Formation17
- Tudela Formation17
- Oldman Formation · Belly River Group16
- Lance Formation15
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The named rock units Chelydroidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 32 further formations hold fewer occurrences each and are not listed. 82 occurrences have no formation on record, which is common for older literature.
Chelydroidea and its relatives
Late CretaceousWhere Chelydroidea and its relatives were recorded in the Late Cretaceous.
Found in the same rock
2,513 taxa- Chelydridae117 sites
- Trionychidae91 sites
- Baenidae73 sites
- Ceratopsidae72 sites
- Scapherpeton tectum68 sites
- Myledaphus bipartitus66 sites
- Anura57 sites
- Hadrosauridae55 sites
- Opisthotriton kayi54 sites
- Lepisosteus occidentalis53 sites
- Champsosaurus52 sites
- Teleostei50 sites
- Adocus46 sites
- Lepisosteus44 sites
- Paronychodon44 sites
- Belonostomus longirostris39 sites
- Multituberculata39 sites
- Coriops amnicolus38 sites
- Crocodylia38 sites
- Compsemys victa35 sites
- Saurornitholestes langstoni35 sites
- Aves34 sites
- Paralbula casei34 sites
- Theropoda34 sites
The Paleobiology Database records 298 sites for Chelydroidea, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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
129 references- Patterns of geographic variation in latest Cretaceous vertebrates: evidence from the turtle component28
- New turtles from the Paleogene of North America22
- Amphibians and reptiles from the Early Miocene of the Bardenas Reales of Navarre (Ebro Basin, Iberian Peninsula)16
- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota16
- Vertebrate microsite assemblages (exclusive of mammals) from the Foremost and Oldman Formations of the Judith River Group (Campanian) of southeastern Alberta: an illustrated guide16
- Fossil Vertebrate Collections15
- 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
- Turtles from the Kaiparowits Formation, Utah8
- Neogene Testudines of Germany. Their stratigraphical and ecological evaluation6
Each of the 331 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. 117 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 content0
No picture of Chelydroidea was found. Wikidata and iDigBio were searched and had none.
Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Chelydroidea, or no answer at all. This entry cannot say which.
No 3D scan of Chelydroidea 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 itEucryptodira through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Baur 1893)