Alethopteris

{{Short description|Extinct genus of plants}} {{Automatic taxobox | fossil_range = Pennsylvanian,<br />~{{fossil range|323.4|298.9}}{{period fossil range|Carboniferous|Pennsylvanian}} | image = Alethopteris grandini (fossil seed fern).jpg | image_caption = ''Alethopteris grandini'', late Carboniferous, Kansas. At the Royal Tyrrell Museum of Palaeontology. | taxon = Alethopteris | authority = | subdivision_ranks = Species | subdivision = *''A. branneri'' *''A. lobifolia'' *''A. lonchiticus'' *''A. roesserti'' *''A. serlii'' *''A. sullivantii'' *''A. valida'' *''A. whitbyensis'' *''A. whitneyi'' }}

'''''Alethopteris''''' is a prehistoric plant genus of fossil pteridospermatophytes (seed ferns) that developed in the Pennsylvanian (around {{period span/brief|Pennsylvanian|-1}}).<ref>{{Cite web|url=http://www.fossilmuseum.net/plantfossils/Alethopteris-valida/Alethopteris.htm|title=Seed Fern Fossil|website=www.fossilmuseum.net|access-date=2016-12-01}}</ref> thumb|left|''Alethopteris florentina'' De Stefani, 1901, Natural History Museum University of Pisa [[File:Alethopteris PAMuseum.jpg|thumb|''Alethopteris'', at the State Museum of Pennsylvania in Harrisburg.|left]] thumb|''Alethopteris'' sp.

[[File:Alethopteris Serlii, PMG.jpg|thumb|''Alethopteris Serlii'' on laminated mudstone from St. Clair, Pennsylvania.]]

==See also== *Coal forest

== References == {{Commons category|position=left}} {{Reflist}}

Category:Pteridospermatophyta Category:Carboniferous plants Category:Prehistoric plant genera Category:Carboniferous first appearances Category:Carboniferous extinctions Category:Fossils of Georgia (U.S. state) Category:Paleozoic life of New Brunswick Category:Paleozoic life of Nova Scotia Category:Paleozoic life of Prince Edward Island Category:Prehistoric plants of North America