格雷纳果(Grenana Samylina,1990)是一类已灭绝的银杏类植物,属于银杏科。发现于中亚的侏罗纪地层。
生理特征
格雷纳果的胚珠着生在成对的珠托中。格雷纳果的叶不具柄,两歧分叉,呈楔拜拉型和拜拉型。
格雷纳果属的模式种是安格仁格雷纳果(Grenana angrenica Samylina,1990)。
地质分布
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