Ferris Formation
127 distinct taxa, from 490 fossil occurrences the Paleobiology Database records under this name, spanning 72–56 Mya.
Wyoming · US
127 taxa · 490 fossils · 72–56 MyaMacrostrat dates this rock 68–65 Ma. Macrostrat’s own record
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8 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
- Lepisosteidae
- Cyclurus fragosus
- Trionychidae
- Chasmosaurinae
- Baenidae
- Brachychampsa
- Eusuchia
- Saurornitholestes
- Tyrannosauridae
- Hadrosaurinae
- Mithrandir gillianus
- Myledaphus bipartitus
- Allognathosuchus
- Theropoda
- Arctocyonidae
- Basilemys
- Champsosaurus
- Periptychus coarctatus
- Protungulatum donnae
- Teleostei
- Ankylosaurus magniventris
- Compsemys victa
- Habrosaurus dilatus
- Lonchidion selachos
- Ornithomimidae
- Paronychodon
- Plastomenidae
- Richardoestesia
- Squamata
- Troodon formosus
- Cimolodon nitidus
- Panoplosaurus rugosidens
- Periptychidae
- Thescelosauridae
- Tyrannosaurus rex
- Adocus
- Caudata
- Compsemys
- Conacodon cophater
- Dromaeosaurus
The 40 most often recorded, of 127.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.