Medullosales

Medullosales

The Medullosales is an order of pteridospermous seed plants characterised by large ovules with circular cross-section, with a vascularised nucellus, complex pollen-organs, stems and rachides with a dissected stele, and frond-like leaves. Their nearest still-living relatives are the cycads.

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Alethopteris

Alethopteris


Neuropteris

Neuropteris


Callipteridium

Callipteridium


Macroneuropteris

Macroneuropteris