Fremont Formation
39 distinct taxa, from 59 fossil occurrences the Paleobiology Database records under this name, spanning 450–446 Mya.
Colorado · US
39 taxa · 59 fossils · 450–446 MyaMembers recorded: Massive Dolomite, Priest Canyon.
Macrostrat dates this rock 458–445 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
- Allumettoceras
- Cyclendoceras
- Endoceras
- Ephippiorthoceras
- Kionoceras
- Lambeoceras
- Probillingsites
- Spyroceras
- Beloitoceras
- Strophomena
- Bucanella
- Calapoecia
- Catenipora delicatulus
- Catenipora robusta
- Ceraurinus icarus
- Charactoceras
- Crinoidea
- Cyrtogomphoceras
- Diestoceras
- Echinosphaerites
- Hebertella sinuata
- Helicelasma rusticum
- Helicotoma
- Hiscobeccus capax
- Hypsiptycha argenturbicum
- Lepidocyclus rectangularis
- Lophospira perangulata
- Modiolopsis
- Neumatoceras
- Plaesiomys
- Plaesiomys bellilamellosus
- Plaesiomys proavita
- Receptaculites
- Saffordophyllum
- Streptelasma
- Trochonema umbilicata
- Westonoceras
- Zygospira modesta
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.