Bison Creek Formation
78 distinct taxa, from 201 fossil occurrences the Paleobiology Database records under this name, spanning 497–489 Mya.
Alberta · CA
78 taxa · 201 fossils · 497–489 MyaMacrostrat places this rock in the Lynx Group, and dates it 496–491 Ma. Macrostrat’s own record
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6 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
- Ptychaspis
- Minkella
- Ellipsocephaloides
- Ellipsocephaloides silvestris
- Pseudagnostus josephus
- Croixana
- Idiomesus
- Clelandia
- Monocheilus
- Neoagnostus
- Orygmaspis
- Pseudagnostus
- Stigmaspis
- Dellea
- Drumaspis idahoensis
- Hardyia
- Illaenurus
- Micragnostus insolitus
- Ptychaspis miniscaensis
- Ellipsocephaloides curtus
- Irvingella major
- Keithiella depressa
- Kendallina
- Orygmaspis contracta
- Saratogia wisconsensis
- Wilbernia explanata
- Wilbernia pero
- Briscoia dalyi
- Cliffia lataegenae
- Comanchia amplooculata
- Deadwoodia duris
- Dellea punctata
- Elvinia roemeri
- Homagnostus obesus
- Housia vacuna
- Iddingsia anatina
- Kindbladia wichitaensis
- Kiowaia
- Monocheilus micros
- Parabolinoides calvilimbata
The 40 most often recorded, of 78.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.