- gymnosperms.
Archaeopteris reproduced by
releasing spores rather than by
producing seeds, but some of the species, such as
Archaeopteris halliana were...
- leaves.
Archaeopteris macilenta leaves and
fertile shoots are
attached to wood
which when
permineralized is
called Callixylon newberryi.
Archaeopteris is retained...
- present,
including roots,
leaves and
secondary wood in
trees such as
Archaeopteris. The
Carboniferous Period saw the
development of
forests in
swampy environments...
-
previously oldest-known example—a root
system probably belonging to
Archaeopteris,
discovered in 2009 near Cairo, New York—by
about four
million years...
- New York
State Museum discovered more
fossils of
Cladoxylopsida and
Archaeopteris in a
quarry in Cairo, New York. A
recent (2017)
discovery in Xinjiang...
- trunks, fronds, and roots. The
earliest tree was once
thought to be
Archaeopteris,
which bears simple, fern-like
leaves spirally arranged on branches...
- ferns, from
earlier progymnosperms),
first trees (the
progymnosperm Archaeopteris), and
first winged insects (palaeoptera and neoptera). Strophomenid...
-
Middle Devonian (about 385
million years ago).
Prior to this discovery,
Archaeopteris was the
earliest known tree. Both of
these reproduced by
spores rather...
- of
progymnosperms gave rise to the
first really large trees known as
Archaeopteris. The
latest surviving group of
progymnosperms is the Noeggerathiales...
-
several separate lineages of
vascular plants, in
progymnosperms like
Archaeopteris, in Sphenopsida,
ferns and
later in the
gymnosperms and angiosperms...
