North Horn Formation
128 distinct taxa, from 240 fossil occurrences the Paleobiology Database records under this name, spanning 72–61 Mya.
Utah · US
128 taxa · 240 fossils · 72–61 MyaMembers recorded: Joe's Valley.
Macrostrat dates this rock 84–56 Ma. Macrostrat’s own record
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11 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
- Compsemys victa
- Lepisosteus
- Allognathosuchus
- Crocodylia
- Continuoolithus canadensis
- Periptychus coarctatus
- Trionychidae
- Ectoconus symbolus
- Hoplochelys
- Ovaloolithus utahensis
- Anisonchus athelas
- Anisonchus oligistus
- Desmatoclaenus hermaeus
- Loxolophus
- Alamosaurus sanjuanensis
- Chriacus baldwini
- Desmatoclaenus
- Ectoconus ditrigonus
- Hadrosauridae
- Loxolophus pentacus
- Ornithischia
- Physa
- Tricentes subtrigonus
- Anisonchus onostus
- Catopsalis fissidens
- Ceratopsia
- Ceratopsidae
- Champsosaurus
- Conacodon kohlbergeri
- Dinosauria
- Ectoconus
- Elliptio (Plesielliptio)
- Eutheria
- Haploconus elachistus
- Loxolophus spiekeri
- Mixodectidae
- Ovaloolithus tenuisus
- Oxyacodon apiculatus
- Oxyacodon ferronensis
- Oxyclaenus pugnax
The 40 most often recorded, of 128.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.