Gull River Formation
48 distinct taxa, from 79 fossil occurrences the Paleobiology Database records under this name, spanning 471–450 Mya.
Ontario · CA
48 taxa · 79 fossils · 471–450 MyaFiled under the Simcoe Group. Members recorded: Upper, lower.
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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
- Astraspis desiderata
- Conodonta
- Tetradium
- Cryptophragmus
- Eriptychius
- Hormotoma
- Oepikina minnesotensis
- Rafinesquina
- Rafinesquina trentonensis
- Strophomena
- Strophomena minuta
- Anazyga recurvirostra
- Bathyurus
- Bathyurus (Raymondites) ingalli
- Bathyurus extans
- Bathyurus superbus
- Belodina compressa
- Beloitoceras orilliense
- Brachiopoda
- Bryozoa
- Bumastus
- Bumastus indeterminatus
- Calyptaulax callicephalus
- Chirognathus duodactylus
- Crinoidea
- Cryptophragmus antiquatus
- Ctenodonta
- Danoceras inutile
- Drepanoistodus suberectus
- Eoleperditia
- Eunema concinnula
- Helicotoma
- Helicotoma planulata
- Holopea concinnula
- Hormotoma gracilis
- Isochilina
- Lambeophyllum profundum
- Larolepis darbyi
- Leperditia
- Liospira
The 40 most often recorded, of 48.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.