Opisthotriton kayi
via iDigBio · CC0 · 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
- OpisthotritonPBDB
- Diet
- carnivorePBDB, for Temnospondyli
- Life habit
- aquaticPBDB
- Motility
- actively mobilePBDB, for Temnospondyli
- Environment
- freshwaterPBDB
Time the record covers
At least 11 million years on record.
The record covers at least 72.2 Mya to 60.9 Mya. No occurrence read is dated outside 83.6 Mya to 57.5 Mya.
111 occurrences of Opisthotriton kayi 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
111 occurrences- Late Cretaceous84%
- Paleocene16%
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
19 formations
- Dinosaur Park Formation · Belly River Group29
- Hell Creek Formation · Montana Group24
- Oldman Formation · Belly River Group20
- Lance Formation9
- Fort Union Formation9
- Foremost Formation · Belly River Group3
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The named rock units Opisthotriton kayi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Opisthotriton kayi and its relatives
Late CretaceousWhere Opisthotriton kayi and its relatives were recorded in the Late Cretaceous.
Found in the same rock
767 taxa- Scapherpeton tectum86 sites
- Myledaphus bipartitus72 sites
- Teleostei66 sites
- Anura62 sites
- Baenidae62 sites
- Lepisosteus occidentalis57 sites
- Chelydridae56 sites
- Trionychidae54 sites
- Hadrosauridae53 sites
- Ceratopsidae51 sites
- Belonostomus longirostris50 sites
- Coriops amnicolus49 sites
- Paralbula casei45 sites
- Champsosaurus44 sites
- Multituberculata44 sites
- Paronychodon43 sites
- Saurornitholestes langstoni43 sites
- Estesesox foxi36 sites
- Aves34 sites
- Champsosaurus natator34 sites
- Holostei32 sites
- Theropoda31 sites
- Leidyosuchus canadensis30 sites
- Tyrannosauridae30 sites
The Paleobiology Database records 110 sites for Opisthotriton kayi, 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- Vertebrate microsite assemblages (exclusive of mammals) from the Foremost and Oldman Formations of the Judith River Group (Campanian) of southeastern Alberta: an illustrated guide19
- Paleontology of the Judith River Formation (Campanian) of Dinosaur National Park, Alberta, Canada: evidence from vertebrate microfossil locality19
- Mesozoic and Palaeocene lissamphibian assemblages of North America: a comprehensive review18
- Paleoecology of an estuarine, incised-valley fill in the Dinosaur Park Formation (Judith River Group, Upper Cretaceous) of southern Alberta, Canada11
- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota9
- Fossil Vertebrate Collections8
- Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming5
- Non-dinosaurian lower vertebrates across the Cretaceous-Tertiary boundary in northeastern Montana3
- Comparative taphonomy and paleoecological reconstruction of two microvertebrate accumulations from the Late Cretaceous Hell Creek Formation (Maastrichtian), eastern Montana2
- Early Tertiary amphibians from the Bighorn Basin, Wyoming2
- The Lower Vertebrates of the Hell Creek Formation, Harding County, South Dakota2
- Paleoecology and sedimentology of a vertebrate microfossil assemblage from the easternmost Dinosaur Park Formation (Late Cretaceous, Upper Campanian,) Saskatchewan, Canada: reconstructing diversity in a coastal ecosystem1
Each of the 111 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 Opisthotriton kayi
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- 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 itOpisthotriton through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Auffenberg 1961