- gymnosperms.
Archaeopteris reproduced by
releasing spores rather than by
producing seeds, but some of the species, such as
Archaeopteris halliana were...
- present,
including roots,
leaves and
secondary wood in
trees such as
Archaeopteris. The
Carboniferous period saw the
development of
forests in
swampy environments...
- trunks, fronds, and roots. The
earliest tree was once
thought to be
Archaeopteris,
which bears simple, fern-like
leaves spirally arranged on branches...
-
accompanied by the progymnosperms,
including the
first large trees Archaeopteris. The Late
Devonian extinction probably also
resulted in osteolepiform...
-
Middle Devonian (about 385
million years ago).
Prior to this discovery,
Archaeopteris was the
earliest known tree. Both of
these reproduced by
spores rather...
- leaves.
Archaeopteris macilenta leaves and
fertile shoots are
attached to wood
which when
permineralized is
called Callixylon newberryi.
Archaeopteris is retained...
-
cladoxylopsid plants like Calamophyton.
Appeared in the Late Devonian,
Archaeopteris was both tree-like and fern-like plant,
growing to 20
metres (66 ft)...
- ferns, from
earlier progymnosperms),
first trees (the
progymnosperm Archaeopteris), and
first winged insects (palaeoptera and neoptera). Strophomenid...
- arborescent,
woody vascular plant, the
cladoxylopsids and
progymnosperm Archaeopteris.
These tracheophytes were able to grow to
large size on dry land because...
- was
later discovered to be a
member of the same
family as the
genus Archaeopteris. It was a
series of
pieces that were
eventually reconstructed to form...
