Saratoga Chalk
21 distinct taxa, from 95 fossil occurrences the Paleobiology Database records under this name, spanning 84–72 Mya.
Arkansas · US
21 taxa · 95 fossils · 84–72 MyaFiled under the Navarro Group.
Macrostrat places this rock in the Taylor Group. Macrostrat’s own record
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10 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
- Baculites ovatus
- Hemiaster wetherbyi
- Nostoceras (Nostoceras) helicinum
- Nostoceras hyatti
- Nostoceras (Nostoceras) approximans
- Hoploscaphites pumilus
- Cirroceras conradi
- Micraster americanus
- Lewyites oronensis
- Nostoceras pauper
- Ammonoidea
- Baculites undatus
- Cardiaster deciper
- Nostoceras colubriformis
- Didymoceras draconis
- Gaudryceras
- Hoploscaphites nodosus
- Nostoceras (Nostoceras)
- Pachydiscus (Pachydiscus) arkansanus
- Pseudokossmaticeras galicianum
- Solenoceras texanum
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.