Umkomasia

Umkomasia is a genus of seed bearing organs produced by corystosperm seed ferns, first based on fossils collected by Hamshaw Thomas from the Burnera Waterfall locality near the Umkomaas River of South Africa. He recognized on the basis of cuticular similarities that the same plant produced pollen organs Pteruchus and the leaves Dicroidium. Various other corystosperm seed bearing organs from the Jurassic and Cretaceous have been assigned to this genus, but recently have been given distinct genera, with Umkomasia being restricted to the Triassic.

Umkomasia
Temporal range:
Umkomasia macleanii ovulate structure, Late Triassic, Molteno Formation, Umkomaas, South Africa.
Scientific classification
Kingdom: Plantae
Order: Corystospermales
Family: Corystospermaceae
Genus: Umkomasia
Thomas 1933
Species
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