Ryozensan Limestone Formation
28 distinct taxa, from 35 fossil occurrences the Paleobiology Database records under this name, spanning 294–290 Mya.
Recorded under country code JP
28 taxa · 35 fossils · 294–290 MyaLoading coastlines…
1 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
- Bairdia
- Acanthoscapha
- Aurikirkbya
- Discoidella
- Pseudofusulina
- Striatobythoceratina
- Acervoschwagerina
- Acratia
- Aurikirkbya ventrocallosa
- Bairdia (Rectobairdia)
- Bairdia tagaensis
- Bairdiacypris ikeyanoriyukii
- Biwaella omiensis
- Kellettina noriyukii
- Knightina
- Microcheilinella shigensis
- Monoceratina
- Oliganisus ryozensanensis
- Paramacrocypris
- Permokegelites beichuanensis
- Petasobairdia
- Pseudofusulina fusiformis
- Pseudofusulina regularis
- Pustulobairdia ohmiensis
- Schubertella kingi
- Serratodus
- Silenites
- Spinomicrocheilinella
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.