Dakota Formation
203 distinct taxa, from 597 fossil occurrences the Paleobiology Database records under this name, spanning 143–66 Mya.
Kansas, Arizona, Nebraska, Iowa · US
203 taxa · 597 fossils · 143–66 MyaMembers recorded: upper sandstone, Janssen Clay, Terra Cotta Clay, Nishnabotna.
Macrostrat dates this rock 121–91 Ma. Macrostrat’s own record
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37 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
- Spermatites
- Plantae
- Minerisporites
- Paxillitriletes
- Arcellites disciformis
- Costatheca
- Molaspora lobata
- Bacutriletes
- Leiosphaeridia
- Serpula
- Crassostrea
- Caryocorbula
- Cuspidaria
- Fulpia
- Gryphaeostrea
- Parvilucina
- Prisca
- Rhynchostreon
- Lingula
- Membranipora
- Molaspora
- Nuculana
- Pseudohypolophus mcnultyi
- Anatimya virgata
- Anomia
- Ariadnaesporites
- Chrysotheca
- Costagyra olisiponensis
- Costatheca lata
- Craginia
- Cymbophora
- Erlansonisporites
- Flemingostrea prudentia
- Granocardium
- Hadrosauridae
- Lopha staufferi
- Meristodonoides
- Metoicoceras mosbyense
- Neritina
- Scabratriletes
The 40 most often recorded, of 203.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.