''Sagenopteris phillipsii'' are leaves of extinct species of

seed fern A seed is an Plant embryogenesis, embryonic plant enclosed in a testa (botany), protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, includ ...

Caytonia reconstruction Retallack and Dilcher 1988

Description

''Sagenopteris phillipsii'' has narrow, palmately arranged leaves with anastomosing venation

Whole 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 fern A seed is an Plant embryogenesis, embryonic plant enclosed in a testa (botany), protective outer covering, along with a food reserve. The formation of the seed is a part of the pro ...

'' (ovulate organs) and '' Caytonanthus arberi'' (pollen organs).

References

Pteridospermatophyta Jurassic plants Fossil record of plants Jurassic first appearances Jurassic extinctions {{jurassic-plant-stub