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开通目 .
开通目
开通目植物复原图
科学分类
界：
植物界 Plantae
演化支 ：维管植物 Tracheophyta
演化支 ：真维管植物 Eutracheophyta
演化支 ：真叶植物 Euphyllophytes
演化支 ：放射状植物 Radiatopses
演化支 ：木質植物 Lignophytes
总门：
种子植物总门 Spermatophyta
目：
† 开通目 Caytoniales
开通目 （学名 ：Caytoniales 滅絕 的種子蕨門 下的一目 。這類植物的根 、茎 不详，主要保存下来的化石 是叶 和生殖器官 ，它們曾被认为是被子植物 的祖先[1]
菲氏鱼网叶（Sagenopteris phillipsi 已发现有几个形态属：叶化石为鱼网叶属（Sagenopteris Caytonanthus Caytonia [1]
晚三叠纪 和晚白垩纪 时广泛分布于格陵兰 、加拿大 、西伯利亚 和中国 [1]
綱未定
?†Nystroemiaceae
?†Alexiales
?†蘆莖羊齒目
?†Erdtmanithecales
?†Hlatimbiales
†盔籽目 阿伯羊齒綱
†Dicranophyllales
†阿伯羊齒目 †Schmeissneriaceae
†阿伯羊齒科 Moresnetiopsida
†Tetrastichiales †Tetrastichiaceae
†Pullarithecales
†Gnetopsidaceae †Pullarithecaceae
†Calathiopsidaceae
†Austrocalyxaceae
†Moresnetiales †Eurystomataceae
†Eospermatacesidae
†Moresnetiaceae 皺羊齒綱
?†Hexapterospermales †Colpospermaceae
†Hexapterospermaceae
†皺羊齒目 †Angaranthaceae
†Heterangiaceae
†Physostomataceae
†皺羊齒科 髓木綱
†Codonospermales
†髓木目 †Potonieaceae
†Polylophospermaceae
†Stephanospermaceae
†Trigonocarpaceae
†Neuropteridaceae
†髓木科
†Callipteridaceae
†Alethopteridaceae
†Cyclopteridaceae 華麗木綱 盾籽綱
†Sporophyllitales †Sporophyllitaceae
†Leuthardtiaceae
†Trichopityales †Psygmophyllaceae
†Syniopteridaceae
†Trichopityaceae
†盾籽目 †Autuniaceae
†盾籽科
†Vetlugospermaceae 大羽羊齒綱
†Phasmatocycadales
†大羽羊齒目 †Emplectopteridaceae
†大羽羊齒科 五柱木綱 網羊齒綱
†Gangamopteridaceae
†網羊齒目
†Lidgettoniales †Denkaniaceae
†Parthaceae
†Lidgettoniaceae
†Rigbyales 擬蘇鐵綱
†Fredlindiales
†擬蘇鐵目 †Benneticarpaceae
†Laurozamitiaceae
†Macrotaeniopteridaceae
†Sturianthaceae
†Varderkloeftiaceae
†Westersheimiaceae
†威氏蘇鐵科
†Williamsoniellaceae
†擬蘇鐵科 開通綱 Axelrodiopsida
†Axelrodiales †Zamiostrobacea
†Axelrodiaceae
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