-
treated formally at the rank of
division Progymnospermophyta or
class Progymnospermopsida (as opposite). The
stratigraphically oldest known examples belong...
- Zosterophyllopsida, Trimerophytopsida, the
Lepidodendrales and the
Progymnospermopsida.
Modern studies of the land
plants agree that seed
plants emerged...
- ; Hiller, Norton; Gess,
Robert W. (1
April 1995). "Archaeopteris(
Progymnospermopsida) from the
Devonian of
southern Africa".
Botanical Journal of the...
- Anderson, H. M., Hiller, N. and Gess, R. W.(1995).
Archaeopteris (
Progymnospermopsida) from the
Devonian of
southern Africa.
Botanical Journal of the Linnean...
-
Scientific classification Kingdom:
Plantae Clade:
Tracheophytes class: †
Progymnospermopsida Order: †Noeggerathiales
Families Noeggerathiaceae Tingyostachyaceae...
-
called Callixylon newberryi.
Archaeopteris is
retained in the
class Progymnospermopsida which includes plants with
gymnospermous anatomy and pteridophytic...
- the seed
ferns or pteridosperms. In 1960, Beck
created the name
Progymnospermopsida for a
class of
plants which reproduced in a
similar way to ferns...
- York.
Scientific classification Kingdom:
Plantae Clade:
Tracheophytes class: †
Progymnospermopsida Order: †Archaeopteridales
Families †Archaeopteridaceae...
- Xu, Hong-he; Feng, Jing (2013). "A new
species of
Aneurophyton (
Progymnospermopsida) from the
Middle Devonian of West Junggar, Xinjiang, China, and its...
-
independently in the
Devonian within Zosterophyllopsida, Sphenopsida,
Progymnospermopsida. The
effect of this
heterospory was that it
presented a
primary evolutionary...
