Denison Formation
42 distinct taxa, from 56 fossil occurrences the Paleobiology Database records under this name, spanning 143–66 Mya.
Texas · US
42 taxa · 56 fossils · 143–66 MyaFiled under the Washita Group. Members recorded: Grayson.
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4 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
- Pervinquieria
- Lima
- Macraster
- Plicatula
- Gryphaea
- Ophiura texana
- Pecten
- Pleurotomaria (Leptomaria) austinensis
- Turritella
- Camptonectes virgatus
- Cinulia
- Cymatoceras
- Cyphosoma volanum
- Epiaster whitei
- Exogyra americana
- Holaster simplex
- Lamna
- Leiocidaris
- Leptarbacia argutus
- Lima wacoensis
- Micropsis lineatus
- Neithea wrighti
- Nerinea
- Neritina
- Orthopsis miliaris
- Ostrea
- Ostrea (Alectryonia)
- Ostrea subovata
- Pachymya austinensis
- Pecten (Chlamys) subalpinus
- Pholadomya shattucki
- Pinna
- Pleurotomaria
- Pyrina parryi
- Remondia
- Salenia
- Serpula
- Spondylus
- Trigonia
- Trochosmilia
The 40 most often recorded, of 42.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.