-
collected specimens of
Cooksonia pertoni in
Perton Quarry, Wales, in 1934.
There were
originally two species,
Cooksonia pertoni and C. hemisphaerica. The genus...
- Artist's
impression of
Cooksonia pertoni...
-
Reconstruction of the
sporophyte of
Cooksonia pertoni,
which Boyce considers too
small to be self-sufficient. The axes (stems) are
around 0.1 mm in diameter...
-
vascular tissue with S-type tracheids. Cooksonioids, such as
Cooksonia pertoni, C. paranensis and C. hemisphaerica, had
radially symmetrical or trumpet-shaped...
- † basal groups (Aberlemnia
caledonica [=Cooksonia caledonica], Cooksonia
pertoni) euphyllophytes...
- 2001
Cooksonia pertoni Lang 1937
Cooksonia pertoni Lang ssp.
apiculispora Habgood,
Edwards and Axe 2002
Cooksonia pertoni Lang ssp.
pertoni Lang emend. Fanning...
- † basal groups (Aberlemnia
caledonica [=Cooksonia caledonica], Cooksonia
pertoni) euphyllophytes...
- † basal groups (Aberlemnia
caledonica [=Cooksonia caledonica], Cooksonia
pertoni) euphyllophytes...
- † basal groups (Aberlemnia
caledonica [=Cooksonia caledonica], Cooksonia
pertoni) euphyllophytes...
-
Cooksonia by
Gonez and Gerrienne, the
sporangium of the type
species (C.
pertoni) is
formed by a
widening of the end of a stem. At
maturity the sporangium...
