- (20 in) wide. Some
other possible corystosperms like
Pachypteris may have
grown as shrubs. The
oldest fossils of
corystosperms,
belonging to Dicroidium, Pteruchus...
-
orders Ginkgoales †Czekanowskiales †Pelta****les? †Umkomasiales? (
corystosperms) †Caytoniales? †Dicranophyllales? †Calamopityales? †Callistophytales...
-
suggestions including at
least some of the
following groups: glossopterids,
corystosperms,
Petriellales Pentoxylales,
Bennettitales and Caytoniales), but not...
- †Glossopteridales †Lyginopteridales †Medullosales †Pelta****les †Umkomasiales (
corystosperms) †Czekanowskiales †Bennettitales †Erdtmanithecales †Pentoxylales †Petriellales...
- (October 2023). "Komlopteris: A
persistent lineage of post-Tri****ic
corystosperms in Gondwana".
Review of
Palaeobotany and Palynology. 317: 104950. Bibcode:2023RPaPa...
- (October 2023). "Komlopteris: A
persistent lineage of post-Tri****ic
corystosperms in Gondwana".
Review of
Palaeobotany and Palynology. 317: 104950. doi:10...
-
genus of fork-leaved seed plants. It is the
archetypal genus of the
corystosperms, an
extinct group of seed plants,
often called "seed ferns", ****igned...
-
fossil leaves. It has
either been
aligned with the
peltasperms or the
corystosperms.
Pachypteris is
represented by hypostomatic,
bipinnate or unipinnate...
-
authors have
suggested that some
peltasperms may have
close affinities to
corystosperms,
another group of
extinct seed plants.
Meyen (1987)
argued that Pelta****les...
-
umkomasialean (or
corystosperm) D. cr****um
Ischigualasto Provincial Park (San Juan Province)
Frond fragments An
umkomasialean (or
corystosperm) D.
dubium Ischigualasto...
