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Ichthyostega (from Gr****: ἰχθῦς ikhthûs, 'fish' and Gr****: στέγη stégē, 'roof') is an
extinct genus of
limbed tetrapodomorphs from the Late
Devonian of...
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first described, the order's sole
member was
Ichthyostega, from
which the
group takes its name.
Ichthyostega was seen as
transitional between fish and the...
- and
digits evolved in the Devonian,
including the Late Devonian-age
Ichthyostega and Acanthostega, as well as the
trackmakers of the
Middle Devonian-age...
- more
basal than
Ichthyostega, it is
possible that
Acanthostega was
actually more derived.
Since Acanthostega resembles juvenile Ichthyostega and
shows a lot...
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primitive than
other Devonian tetrapodomorphs including Acanthostega and
Ichthyostega, and
helps further understanding of the fish-tetrapod transition. Walter...
- (overlapping) via blade-like flanges.
Imbricating ribs are also
known in
Ichthyostega,
though in that
taxon the ribs are more
diverse in shape.
Tiktaalik most...
-
portion of the stem group, the
earliest limbed tetrapodomorphs such as
Ichthyostega and Acanthostega,
which evolved in the
Devonian period long
before the...
- with some of the
early tetrapods such as the
Devonian Acanthostega and
Ichthyostega, and
unique tri****ic
animals such as the
phytosaur Mystriosuchus alleroq...
-
examples of
species showing transitional features have been discovered.
Ichthyostega was one of the
first primitive amphibians, with
nostrils and more efficient...
- stem
tetrapods from Greenland,
Acanthostega and
Ichthyostega,
Ymeria is most
closely related to
Ichthyostega,
though the
single known specimen is smaller...
