St. Peter Sandstone Formation
82 distinct taxa, from 149 fossil occurrences the Paleobiology Database records under this name, spanning 471–450 Mya.
Minnesota, Illinois, Iowa, Illinois, Iowa, Wisconsin · US
82 taxa · 149 fossils · 471–450 MyaLoading coastlines…
8 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
- Cyrtodonta
- Modiolopsis
- Orthodesma
- Cameroceras
- Goniophora
- Eunema helicteres
- Holopea obliqua
- Holopea paludiniformis
- Hormotoma gracilis
- Kionoceras
- Ophiletina fausta
- Ctenodonta
- Cyclonema aiens
- Cymatonota
- Cyrtonellopsis vetulum
- Deceptrix
- Doleroides
- Zittelloceras
- Actinoceras
- Ambonychiopsis
- Ectomaria prisca
- Erismodus
- Omospira laticincta
- Orthoceras
- Ptilodictya
- Vanuxemia
- Acanthocrania
- Acanthocrania setigera
- Antiplectoceras
- Campylorthis deflecta
- Cataschisma convexum
- Chirognathus
- Clathrospira subconica
- Crania
- Cyclonema percarinata
- Cyrtonellopsis
- Deiroceras
- Diestoceras
- Endoceras proteiforme
- Eotomaria dryope
The 40 most often recorded, of 82.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.