Two Medicine Formation
117 distinct taxa, from 290 fossil occurrences the Paleobiology Database records under this name.
The Paleobiology Database files this name in 2 countries. That can be one body of rock crossing a border, or two rocks that happen to share a name. The database does not say which, so nothing below is added across them.
Montana · US
117 taxa · 289 fossils · 86–72 MyaFiled under the Montana Group. Members recorded: Flag Butte, Hagans Crossing, Shields Crossing.
Macrostrat places this rock in the Montana Group, and dates it 84–68 Ma. Macrostrat’s own record
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28 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
- Hadrosauridae
- Hypacrosaurus stebingeri
- Theropoda
- Tyrannosauridae
- Lambeosaurinae
- Ankylosauridae
- Crocodylia
- Orodromeus makelai
- Troodon formosus
- Daspletosaurus horneri
- Maiasaura peeblesorum
- Ceratopsia
- Dinosauria
- Gastropoda
- Hypsilophodontidae
- Nodosauridae
- Oohkotokia horneri
- Ornithomimidae
- Saurornitholestes
- Spheroolithus choteauensis
- Testudinata
- Carnosauria
- Centrosaurinae
- Cerasinops hodgskissi
- Continuoolithus canadensis
- Einiosaurus procurvicornis
- Prosaurolophus maximus
- Squamata
- Troodon
- Achelousaurus horneri
- Ankylosauria
- Anura
- Azhdarchidae
- Basilemys
- Bivalvia
- Brontotholus harmoni
- Champsosaurus
- Chelydridae
- Daspletosaurus
- Dromaeosauridae
The 40 most often recorded, of 117.
Alberta · CA
1 taxa · 1 fossils · 84–72 MyaFiled under the Montana Group. Members recorded: Flag Butte.
Macrostrat places this rock in the Montana Group, and dates it 84–68 Ma. Macrostrat’s own record
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1 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
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.