-
Asteroxylon ("star-shaped xylem") is an
extinct genus of
vascular plants of the
Division Lycopodiophyta known from
anatomically preserved specimens described...
- more
complex megaphylls of
other vascular plants. The
extinct genus Asteroxylon represents a
transition between these two groups: it has a
vascular trace...
- are:
Order †Drepanophycales (including Baragwanathia,
Drepanophycus and
Asteroxylon)
Order †Protolepidodendrales
Order †Lepidodendrales
Order †Pleuromeiales...
- Horneophyton), and
which were
likely to have
colonised waterlogged surfaces (
Asteroxylon). In some cases, it is
possible to see
different mechanisms of repairing...
-
Baragwanathia differed from such taxa as
Asteroxylon by the
presence of
vascular tissue in its leaves—
Asteroxylon had
enations without vascular tissue. The...
- (the
central vasculature)
later emerged towards the
enations (as in
Asteroxylon), and
eventually continued to grow
fully into the leaf to form the mid-vein...
- Drepanophycales. However,
Kenrick and
Crane (1997) in
their cladistic study place Asteroxylon in the
clade Drepanophycaceae. Taylor,
Taylor &
Krings (2009) do not...
-
vascular plant, and grew in ****ociation with
other vascular plants such as
Asteroxylon mackei, a
probable ancestor of
modern clubmosses (Lycopsida), and with...
-
protostele connecting with
existing enations The
leaves of the
Rhynie genus Asteroxylon,
which was
preserved in the
Rhynie chert almost 20
million years later...
-
interpreted as a
representative of the
ancestors of
modern vascular plants and
Asteroxylon mackei,
which was an
ancestor of
modern clubmosses (Lycopsida). The stems...
