-
Alethopteris is a
prehistoric plant genus of
fossil pterido****tophytes (seed ferns) that
developed in the
Carboniferous period (around 360 to 300 million...
-
pteridosperms Genera recorded in
Great Britain include:
Pteridosperm leaves:
Alethopteris, Callipteridium,
Cyclopteris (leaf bases), ?Desmopteris, ****sonites...
- to medium-sized trees. The
largest specimens were
probably of
genus Alethopteris,
whose fronds could be 7
metres long and the
trees were
perhaps up to...
-
ferns and "seed ferns"
include Pecopteris, Cyclopteris, Neuropteris,
Alethopteris, and Sphenopteris;
Megaphyton and
Caulopteris were tree ferns. The Equisetales...
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seeds instead of spores; they had
common foliage names Mariopteris,
Alethopteris, Odontopteris, Neuropteris,
Laveineopteris and Macroneuropteris; extinct...
- Seed
ferns or Pterido****tophyta
include Cyclopteris, Neuropteris,
Alethopteris, and Sphenopteris. The
Equisetales included the
common giant form Calamites...
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report †
Alethopteris †
Alethopteris davreuxi †
Alethopteris decurrens †
Alethopteris grandini †
Alethopteris lonchitica †
Alethopteris owenii †
Alethopteris serlii...
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Alethopteridaceae Temporal range: Carboniferous–Permian PreꞒ Ꞓ O S D C P T J K Pg N
Alethopteris Scientific classification Kingdom:
Plantae Clade:
Tracheophytes Division:...
- †Achatella †Actinoceras †
Alethopteris †
Alethopteris decurrens †
Alethopteris lonchitica †
Alethopteris owenii †
Alethopteris serlii †Amphibamus – type locality...
- †Ageleodus †
Alethopteris †
Alethopteris ambigua – or
unidentified comparable form †
Alethopteris aquilina †
Alethopteris decurrens †
Alethopteris evansii †Alethopteris...
