Big Hill Formation
41 distinct taxa, from 52 fossil occurrences the Paleobiology Database records under this name, spanning 450–446 Mya.
Michigan · US
41 taxa · 52 fossils · 450–446 MyaFiled under the Richmond Group.
Macrostrat dates this rock 449–446 Ma. Macrostrat’s own record
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2 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
- Actinoceras
- Hiscobeccus capax
- Lophospira milleri
- Rhynchotrema perlamellosum
- Spyroceras
- Strophomena planumbona
- Strophomena sulcata
- Strophomena vetusta
- Archaeobatophora typa
- Arthropoda
- Aulacera
- Beatricea undulata
- Bythopora
- Calapoecia huronensis
- Catenipora gracilis
- Chaetocladus
- Chasmataspidida
- Columnaria alveolata
- Conchopeltis
- Discinoidea
- Eurypterida
- Girvanella richmondensis
- Hallopora
- Hebertella alveata
- Hebertella occidentalis
- Helicelasma rusticum
- Hindia
- Hoplitaspis hiawathai
- Leperditicopida
- Lingulasma changi
- Linguloidea
- Lophospira
- Lunataspis gundersoni
- Lyopora goldfussi
- Pachydictya
- Porifera
- Pterinea demissa
- Rhynchotrema
- Strophomena huronensis
- Trilobita
The 40 most often recorded, of 41.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.