Annona Formation
23 distinct taxa, from 47 fossil occurrences the Paleobiology Database records under this name, spanning 84–72 Mya.
Arkansas · US
23 taxa · 47 fossils · 84–72 MyaFiled under the Taylor Group.
Macrostrat dates this rock 80–75 Ma. Macrostrat’s own record
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3 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
- Didymoceras
- Nostoceras (Nostoceras)
- Baculites
- Baculites taylorensis
- Pachydiscus (Pachydiscus)
- Placenticeras
- Baculites reduncus
- Desmophyllites diphylloides
- Didymoceras platycostatum
- Menuites portlocki
- Solenoceras crassum
- Atreta
- Baculites crickmayi
- Didymoceras binodosum
- Eutrephoceras
- Inoceramus
- Nostoceras pulcher
- Pleurotomariidae
- Pseudophyllites
- Pycnodonte
- Spondylus
- Trachyscaphites redbirdensis
- Trochidae
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.