-
metres (3,300 to 6,600 ft) thick, and
divided into the Higashinagano,
Nishinakayama, Utano, and
Ohchi Formations in
ascending order. The
group rests unconformably...
- †Nipponoblatta
Fujiyama 1974
Guanyintan Formation, China, Hettangian,
Nishinakayama Formation, ****an, Toarcian,
Yixian Formation, China,
Aptian †Nogueroblatta...