Sagenopteris Phillipsii on:
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''Sagenopteris phillipsii'' are leaves of extinct species of seed ferns.
Description
''Sagenopteris phillipsii'' has narrow, palmately arranged leaves with anastomosing venationWhole plant reconstructions
Different organs attributed to the same original plant can be reconstructed from co-occurrence at the same locality and from similarities in the stomatal apparatus and other anatomical peculiarities of fossilized cuticles. *''Sagenopteris phillipsii'' may have been produced by the same plant as ''Caytonia nathorstii
''Caytonia nathorstii'' is an extinct species of seed ferns.
Description
''Caytonia'' has berry like cupules with numerous small seeds arrayed along axes Whole plant reconstructions
Different organs attributed to the same original p ...
'' (ovulate organs) and '' Caytonanthus arberi'' (pollen organs).
References
Pteridospermatophyta Jurassic plants Fossil record of plants Jurassic first appearances Jurassic extinctions {{jurassic-plant-stub