Mikasa Sandstone Formation
24 distinct taxa, from 69 fossil occurrences the Paleobiology Database records under this name, spanning 101–90 Mya.
Ishikari · JP
24 taxa · 69 fossils · 101–90 MyaFiled under the Middle Yezo Group.
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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
- Steinmanella
- Aphrodina
- Apiotrigonia (Apiotrigonia)
- Inoceramus yabei
- Meekia
- Pterotrigonia (Acanthotrigonia)
- Gnesioceramus cripsii
- Pterotrigonia (Pterotrigonia)
- Anthonya
- Crenella
- Cucullaea (Cyphoxis) truncata
- Cymbophora
- Entolium
- Eriphyla (Eriphyla)
- Glycymeris (Hanaia) hokkaidoensis
- Himenourella subovalis
- Pseudoptera
- Scabrotrigonia kobayashii
- Thetis japonica
- Trigonarca
- Glycymerita
- Inoceramus (Inoceramus)
- Lycettia
- Pseudasaphis
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.