Atoka Formation
42 distinct taxa, from 60 fossil occurrences the Paleobiology Database records under this name, spanning 323–307 Mya.
Arkansas, Oklahoma · US
42 taxa · 60 fossils · 323–307 MyaMembers recorded: Barnett Hill, Webbers Falls Shale.
Macrostrat dates this rock 319–312 Ma. Macrostrat’s own record
Loading coastlines…
18 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Phaneroceras kesslerense
- Metacromyocrinus
- Paralegoceras (Diaboloceras) varicostatum
- Staffella
- Paracromyocrinus
- Protencrinus
- Stearoceras gibbosum
- Affinocrinus
- Alcimocrinus
- Anchicrinus
- Anobasicrinus
- Atrapocrinus
- Brabeocrinus
- Clathrocrinus
- Dictyospongia
- Diphuicrinus
- Edestus vorax
- Elibatocrinus
- Eowellerites discoidalis
- Eowellerites moorei
- Hebetorthoceras brokenarrowense
- Isoallagecrinus
- Megaglossoceras glicki
- Metacoceras
- Microcaracrinus
- Moundocrinus
- Oklahomacrinus
- Paralegoceras iowense
- Paralegoceras texanum
- Peripetoceras
- Phaneroceras compressum
- Platyfundocrinus
- Proallosocrinus
- Pseudopronorites arkansiensis
- Pseudorthoceras knoxense
- Sciadiocrinus
- Solenochilus floweri
- Solenochilus peculiare
- Stearoceras smithi
- Stenopronorites
The 40 most often recorded, of 42.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.