Platteville, Decorah Formation
303 distinct taxa, from 482 fossil occurrences the Paleobiology Database records under this name, spanning 458–450 Mya.
Minnesota, Wisconsin, Missouri, Minnesota, Wisconsin, Illinois · US
303 taxa · 482 fossils · 458–450 MyaFiled under the Galena Group. Members recorded: Spechts Ferry, Ion, Mifflin, Guttenberg, Beloit, Rhinidictya bed, Hidden Falls, Magnolia, Carimona, Rhinidictya Beds.
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22 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
- Eurychilina
- Zittelloceras
- Beloitoceras
- Cupulocrinus
- Hormotoma gracilis
- Richardsonoceras
- Actinoceras
- Archinacella deleta
- Campylorthis deflecta
- Carinaropsis cymbula
- Cremacrinus
- Ctenodonta
- Glyptorthis bellarugosa
- Hesperorthis tricenaria
- Lophospira serrulata
- Manespira nicolleti
- Skenidioides anthonense
- Vanuxemia
- Clathrospira conica
- Cupulocrinus jewetti
- Cyclonema textilis
- Cymatonota
- Cyrtodonta
- Dinorthis sweeneyi
- Gyronema pulchellum
- Metaspyroceras
- Oepikina minnesotensis
- Phragmolites obliquus
- Phragmolites triangularis
- Pionodema
- Punctaparchites rugosus
- Sinuites cancellatus
- Sinuites pervoluta
- Sphenolium
- Stictopora
- Strophomena plattinensis
- Tripteroceras
- Whiteavesia
- Allumettoceras
- Ambonychiopsis
The 40 most often recorded, of 303.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.