Masaragawa Formation
20 distinct taxa, from 25 fossil occurrences the Paleobiology Database records under this name, spanning 23–16 Mya.
Recorded under country code JP
20 taxa · 25 fossils · 23–16 MyaLoading coastlines…
2 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
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.