Chainman Formation
41 distinct taxa, from 160 fossil occurrences the Paleobiology Database records under this name, spanning 340–323 Mya.
Utah, Nevada · US
41 taxa · 160 fossils · 340–323 MyaMembers recorded: Camp Canyon, Willow Gap, Jensen.
Macrostrat dates this rock 341–322 Ma. Macrostrat’s own record
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14 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
- Goniatites americanus
- Tabulipora
- Dimorphoceras rileyi
- Goniatites deceptus
- Calygirtyoceras arcticum
- Girtyoceras hamiltonense
- Girtyoceras primum
- Entogonites
- Entogonites acus
- Fenestella
- Goniatites eganensis
- Goniatites sowerbyi
- Kazakhoceras bylundi
- Praedaraelites loeblichi
- Calygirtyoceras confusionense
- Entogonites borealis
- Fistulipora
- Girtyoceras gordoni
- Metadimorphoceras mangeri
- Metadimorphoceras richardsi
- Stenopora
- Stenoporella
- Bollandoceras
- Bollandoceras occidentale
- Callocladia
- Cystodictya
- Girtyoceras
- Goniatites
- Polypora
- Rhabdomeson
- Streblotrypa
- Anisotrypa
- Archimedes
- Ascopora
- Calygirtyoceras
- Dimorphoceras worki
- Entogonites burbankensis
- Metadimorphoceras
- Penniretepora
- Saffordotaxis
The 40 most often recorded, of 41.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.