Butano Formation
108 distinct taxa, from 292 fossil occurrences the Paleobiology Database records under this name, spanning 48–38 Mya.
California · US
108 taxa · 292 fossils · 48–38 MyaMembers recorded: Upper Sandstone, Upper Limestone.
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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
- Discoaster
- Rhabdosphaera
- Reticulofenestra
- Coccolithus
- Pontosphaera
- Nannotetrina
- Coccolithus pelagicus
- Sphenolithus
- Micrantholithus
- Reticulofenestra umbilicus
- Amphimorphina ignota
- Coccolithus formosus
- Cruciplacolithus
- Cruciplacolithus staurion
- Discoasteroides
- Helicosphaera
- Helicosphaera lophota
- Neococcolithes dubius
- Pontosphaera multipora
- Reticulofenestra dictyoda
- Sphenolithus moriformis
- Sphenolithus radians
- Thoracosphaera
- Transversopontis
- Chilostomella hadleyi
- Chiphragmalithus
- Ellipsolithus
- Globigerina decepta
- Lophodolithus
- Neococcolithes protenus
- Plectina garzaensis
- Sphaeroidina gredalensis
- Spiroloculina lamposa
- Subbotina triloculinoides
- Ammobaculites cubensis
- Anomalina garzaensis
- Anomalinoides globosa
- Asterigerina crassaformis
- Bathysiphon eocenica
- Bolivina gracilis
The 40 most often recorded, of 108.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.