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Ryoseki-type flora

• Distribution: Pacific coast of southwest Japan (Iwate pref. - Kochi pref. - Kumamoto pref.), Primorye in Russia, southern China, Southeast Asia
• Strata: Omoto Formation
• Late Jurassic - Early Cretaceous

• Climate: Tropical - Subtropical with a very long dry season in a year

• [ Index fossils ]
• Brachyphyllum sp.
• Cupressinocladus sp.
• Frenelopsis sp.
• Nilssonia densinervis
• Nilssonia schaumburgensis
• Pagiophyllum sp.
• Pseudogrenelopsis sp.
• Ptilophyllum sp.
• Zamiophyllum sp.
• Zamites sp.

• Taketani and Osozawa. (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.68-81DOI