Poronai Formation
34 distinct taxa, from 52 fossil occurrences the Paleobiology Database records under this name, spanning 48–23 Mya.
Hokkaido, Teshio · JP
34 taxa · 52 fossils · 48–23 MyaLoading coastlines…
8 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
- Cyclocardia
- Conchocele bisecta
- Hubertschenckia ezoensis
- Malletia
- Orectospira
- Portlandia
- Elphidium
- Euspira
- Haplophragmoides
- Yoldia
- Acer momijiyamense
- Acila
- Acila (Truncacila)
- Ammobaculites
- Anomalina
- Aturia yokoyamai
- Bathyancistrolepis
- Bathyancistrolepis mikasaensis
- Bathysiphon
- Caucasina
- Colus
- Conchocele taylori
- Cyclammina
- Dentalina
- Globobulimina
- Glyptocidaris (Eoglyptocidaris) arctina
- Gyroidina
- Heptranchias tenuidens
- Neptunea
- Neptunea modestoidea
- Periploma
- Portlandia (Portlandia)
- Pristiophorus lineatus
- Turritella
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.