Preliminary notes on the multicarpelous female flower with conduplicate carpels from the Upper Cretaceous of Hokkaido, Japan

Tamiko OHANA, Tatsuaki KIMURA
1987 Proceedings of the Japan Academy. Series B, Physical and biological sciences  
doi:10.2183/pjab.63.175 fatcat:37xc2bne35ebdmvottvb6nkisa