-
million years ago.
Ichthyornis is a
common component of the
Niobrara Formation fauna, and
numerous specimens have been found.
Ichthyornis has been historically...
- tails" in Gr****) is a
natural group which includes the
common ancestor of
Ichthyornis, Hesperornis, and all
modern birds as well as all
other descendants of...
- to the group's namesake,
Ichthyornis. However,
these seem to have been more
closely related to
modern birds than to
Ichthyornis dispar. In
Julia Clarke's...
- Its type
species was
originally classified as
Ichthyornis celer. A.
celer was long
allied with
Ichthyornis,
having been ****igned to
Ichthyornidae by Marsh...
-
Hesperornis than to Baptornis.
Hesperornitheans were
originally combined with
Ichthyornis in the
paraphyletic group "Odontornithes" by
Othniel Charles Marsh, in...
- J.A. (2004). "Morphology,
phylogenetic taxonomy, and
systematics of
Ichthyornis and
Apatornis (Avialae: Ornithurae)".
Bulletin of the
American Museum...
-
advanced than
Ichthyornis but less
advanced than
modern birds. Clarke, J.A. (2004). "Morphology,
phylogenetic taxonomy, and
systematics of
Ichthyornis and Apatornis...
- and
diving species. The
latter included the
superficially gull-like
Ichthyornis and the Hesperornithiformes,
which became so well
adapted to hunting...
- evolution. A neognath-like
palate is
however seen in
modern basal birds like
Ichthyornis.
Neognathae was long
ranked as a
superorder subdivided into orders. Attempts...
- as
lobed toes for this group. Like many
other Mesozoic birds such as
Ichthyornis,
Hesperornis had
teeth as well as a beak. In the
hesperornithiform lineage...
