-
Caytonia is an
extinct genus of seed ferns.
Caytonia has berry-like cu****s with
numerous small seeds arra****
along axes
Different organs attributed to...
- some ferns, but
lacking orders of
venation found in
angiosperm leaves.
Caytonia was
first described by
Hamshaw Thomas in 1925. His
close examination of...
-
Caytonia nathorstii is an
extinct species of seed ferns.
Caytonia has
berry like cu****s with
numerous small seeds arra****
along axes
Different organs...
-
fossil gymnosperms such as
these and the Bennettitales, glossopterids, and
Caytonia are considered, it is
clear that
angiosperms are
nested within a larger...
- cu**** (a
modified branch or
group of branches)
surrounded the
ovule (e.g.
Caytonia or Glossopteris).
Ovule orientation may be anatropous, such that when inverted...
- cuticles.
Sagenopteris phillipsii may have been
produced by the same
plant as
Caytonia nathorstii (ovulate organs) and
Caytonanthus arberi (pollen organs). v...
- and a
variety of
fossils (glossopterids, Pentoxylon, Bennettitales, and
Caytonia), but not the Gnetales. 23,420
species of
vascular plant have been recorded...
-
distinctive as the four
living gymnosperm groups, such as Bennettitales,
Caytonia and the glossopterids. When
these gymnosperm fossils are considered, the...
- Glossopteris,
which already bore
recurved leaves resembling carpels. The
Mesozoic Caytonia is more flower-like still, with
enclosed ovules – but only a
single integument...
- organ-genus of the Caytoniales, and it is
often found along Sagenopteris and
Caytonia.
Caytonanthus remains have been
found in Greenland, UK,
Hungary Russia...
