Peltaspermales
   HOME

TheInfoList



OR:

The Peltaspermales are an extinct order 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 Devonia ...
, 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, 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'' 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 p ...
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