Aratozaki Formation
Geology
Group: Hashiura
Members: unnamed (2)
Lithologies: sandstone (2), conglomerate (2)
Paleoenvironments: marine indet. (2)
Age range: Early/Lower Bajocian or 170.90000 to 168.60000 Ma
Collections
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Bajocian | Japan (Miyagi) | (39978) | |
| Bajocian | Japan (Miyagi) | (40543) |