Chapin Formation
39 distinct taxa, from 60 fossil occurrences the Paleobiology Database records under this name, spanning 372–347 Mya.
Iowa, Nebraska · US
39 taxa · 60 fossils · 372–347 MyaMacrostrat places this rock in the North Hill Group, and dates it 359–352 Ma. Macrostrat’s own record
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3 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
- Spirifer
- Polygnathus
- Siphonodella
- Chonetipustula concentrica
- Linoproductus ovatus
- Neopolygnathus communis
- Camarotoechia
- Schellwienella
- Schizophoria chouteauensis
- Syringothyris
- Zaphrenthis
- Amplexus
- Athyris
- Bellerophon blairi
- Bispathodus aculeatus
- Bispathodus stabilis
- Brachythyris chouteauensis
- Chonetes
- Chonetes logani
- Cranaena
- Crinoidea
- Cyathaxonia
- Dictyoclostus arcuatus
- Fenestella
- Grammysia
- Leptagonia analoga
- Leptopora
- Nucleospira
- Paraphorhynchus
- Platyceras paralium
- Platycrinites
- Rhipidomella tenuicostata
- Schellwienella inflata
- Spirifer missouriensis
- Spiriferina
- Straparollus (Euomphalus) subplanus
- Streptorhynchus tenuicostatum
- Syringopora
- Tanaoblastus roemeri
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.