Arkadelphia Marl
46 distinct taxa, from 70 fossil occurrences the Paleobiology Database records under this name, spanning 72–66 Mya.
Arkansas · US
46 taxa · 70 fossils · 72–66 MyaMembers recorded: basal.
Macrostrat places this rock in the Navarro Group. Macrostrat’s own record
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5 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
- Cliona
- Exogyra (Exogyra) costata
- Serpula
- Baculites
- Gryphaeostrea vomer
- Vertebrata
- Crassatella vadosa
- Cubitostrea tecticosta
- Cyprimeria
- Discoscaphites
- Nuculana
- Acutostrea plumosa
- Anchura
- Anomia argentaria
- Bellifusus spinosus
- Botula
- Buccinopsis solida
- Cadulus
- Caestocorbula (Caestocorbula) crassaplica
- Camptonectes bubonis
- Caryophyllia konincki
- Crassatella
- Crenella serica
- Cylichna
- Dentalium
- Dentalium leve
- Discoscaphites conradi
- Echinoidea
- Idonearca capax
- Malletia
- Mathilda (Mathilda) ripleyana
- Neogastropoda
- Pteria
- Pterotrigonia (Scabrotrigonia)
- Pycnodonte vesicularis
- Pyropsis
- Sphenodiscus
- Striarca
- Striaticostatum
- Syncyclonema
The 40 most often recorded, of 46.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.