Iron Springs Formation
61 distinct taxa, from 119 fossil occurrences the Paleobiology Database records under this name, spanning 101–72 Mya.
Utah · US
61 taxa · 119 fossils · 101–72 MyaMacrostrat dates this rock 96–68 Ma. Macrostrat’s own record
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9 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
- Albanerpetontidae
- Melvius
- Urodela
- Anura
- Lepisosteidae
- Dromaeosauridae
- Scapherpeton
- Anguidae
- Cantioscyllium estesi
- Crocodylia
- Didelphimorphia
- Hadrosauroidea
- Metatheria
- Ankylosauridae
- Batrachosauroididae
- Bryceomys
- Cimolodon
- Cimolodon wardi
- Cimolomys
- Habrosaurus
- Hadrosauridae
- Hybodus
- Naomichelys
- Scapherpetontidae
- Scincoidea
- Testudines
- Theropoda
- Ankylosauria
- Apistodon exiguus
- Brownichnus favosites
- Cedaromys
- Ceratodus
- Ceratopsia
- Ceratopsidae
- Chiloscyllium missouriense
- Coelurosauria
- Cristomylus bulldogensis
- Dakotamys malcolmi
- Dicothodon
- Dromaeosaurinae
The 40 most often recorded, of 61.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.