Alethopteris

Alethopteris is a prehistoric plant genus of fossil pteridospermatophytes (seed ferns) that developed in the Pennsylvanian (around 320 to 300 million years ago).^[1]

Alethopteris florentina De Stefani, 1901, Natural History Museum University of Pisa

Alethopteris, at the State Museum of Pennsylvania in Harrisburg.

Alethopteris sp.

Alethopteris Serlii on laminated mudstone from St. Clair, Pennsylvania.

Alethopteris Temporal range: Pennsylvanian PreꞒ Ꞓ O S D C P T J K Pg N
Alethopteris grandini, late Carboniferous, Kansas. At the Royal Tyrrell Museum of Palaeontology.
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	†Pteridospermatophyta
Order:	†Medullosales
Family:	†Alethopteridaceae
Genus:	†Alethopteris
Species
A. branneri A. lobifolia A. lonchiticus A. roesserti A. serlii A. sullivantii A. valida A. whitbyensis A. whitneyi

See also

• Coal forest