Atokatheridium
Atokatheridium is an extinct genus of Deltatheridiidae from the Cretaceous of United States.

Davis, B.M. and Cifelli, R.L. · CC BY-SA 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
- DeltatheridiidaePBDB
- Diet
- carnivore, durophagePBDB, for Deltatheridiidae
- Life habit
- scansorialPBDB, for Theria
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Mammalia
Time the record covers
At most 21 million years on record.
Every occurrence read is dated to somewhere between 121.4 Mya and 100.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Atokatheridium on record, most of them in the Early 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
2 occurrences- Early Cretaceous100%
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
2 formations
- Antlers Formation · Trinity Group1
- Cloverly Formation1
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The named rock units Atokatheridium has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Atokatheridium and its relatives
Early CretaceousWhere Atokatheridium and its relatives were recorded in the Early Cretaceous.
Found in the same rock
86 taxa- Amiidae2 sites
- Anura2 sites
- Aves2 sites
- Caudata2 sites
- Deinonychus antirrhopus2 sites
- Goniopholididae2 sites
- Mesoeucrocodylia2 sites
- Multituberculata2 sites
- Ornithischia2 sites
- Osteichthyes2 sites
- Paramacellodidae2 sites
- Pholidosauridae2 sites
- Ptilotodon wilsoni2 sites
- Teiidae2 sites
- Testudines2 sites
- Theropoda2 sites
- Acrocanthosaurus1 site
- Actinopterygii1 site
- Albanerpeton arthridion1 site
- Albanerpeton ektopistikon1 site
- Alticonodontinae1 site
- Amiiformes1 site
- Amphibia1 site
- Anguimorpha1 site
The Paleobiology Database records 2 sites for Atokatheridium, 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
2 references- Vertebrate paleontology of the Cloverly Formation (Lower Cretaceous), I: faunal composition, biogeographic relationships, and sampling1
- Primitive boreosphenidan mammal (?Deltatheroida) from the Early Cretaceous of Oklahoma1
Each of the 2 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 content1

Picture of Atokatheridium
- Source
- Wikidata/Commons
- Credit
- Davis, B.M. and Cifelli, R.L.
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
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 itDeltatheridiidae through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Kielan-Jaworowska and Cifelli 2001