The Peltaspermales are an extinct

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of d ...

of plants belonging to

Pteridospermatophyta The term Pteridospermatophyta (or "seed ferns" or "Pteridospermatopsida") is a polyphyletic group of extinct seed-bearing plants (spermatophytes). The earliest fossil evidence for plants of this type is the genus ''Elkinsia'' of the late Devonian ...

, or seed ferns. It is unclear whether they form a natural group of organisms as they are poorly known. They span from the Late Carboniferous to the Early Jurassic. It includes at least one family,

Peltaspermaceae Peltaspermaceae is a natural family of seed ferns (Pteridospermatophyta) widespread in both northern and southern hemispheres coal measures of Permian and Triassic age. Peltasperms persisted in a relictual distribution in Patagonia during the Ea ...

, which spans from the Permian to Early Jurassic. Along with these, two informal groups (the " Supaioids" and the " Comioids") of uncertain taxonomic affinities exist, each centered around a specific genus ; ''

Supaia ''Supaia'' is an extinct genus of fern-like plants, possibly seed ferns. Species belonging to the genus lived during the Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the ...

'' and ''Comia.'' In 2009, a new genus from the Lower Permian/Leonardian

Clear Fork Group The Clear Fork Group is a geologic group in the Texas Red Beds. It preserves fossils dating back to the Permian period. See also * List of fossiliferous stratigraphic units in Texas * Paleontology in Texas Paleontology in Texas refers to pa ...

was erected and named '' Auritifolia waggoneri''. It was assigned to the "comioids" based on its venation pattern, similar to that of '' Comia'', as well as its simple pinnate fronds

References

Permian plants Triassic plants Prehistoric plant orders Pteridospermatophyta Permian first appearances Triassic extinctions {{paleobotany-stub