-
million years ago). It is the only
species of
Hesperornis for
which a
nearly complete skull is known.
Hesperornis cr****ipes was
named in 1876 by Marsh, who...
-
freshwater habitats in the
Northern Hemisphere, and
include genera such as
Hesperornis, Parahesperornis, Baptornis, Enaliornis, and Potamornis, all strong-swimming...
-
colleagues in 2022 as "the
smallest clade containing Ichthyornis dispar,
Hesperornis regalis, and
Vultur gryphus".
Ernst Haeckel coined the name in 1866 and...
- pleurodonts). It is
known from
several aquatic amniotes: ichthyosaurs,
Hesperornis, Ichthyornis,
juvenile caimans, some
cetaceans and even some ctenochasmatoid...
-
noted the rare and
unique quality of
these toothed birds (including
Hesperornis,
which was
found to also have
teeth by 1877), and the
irony of their...
- In
addition to non-crown
group primitive birds like Archaeopteryx,
Hesperornis and Confuciusornis, therefore, pan-group
birds would include all dinosaurs...
- birds.
Using the then
newly discovered fossils of
Archaeopteryx and
Hesperornis,
Thomas Henry Huxley pronounced that they had
evolved from dinosaurs...
- and far between, at
least compared with its
contemporary relatives in
Hesperornis.
Remains are
known from
central North America,
namely the
former shallows...
- Max (1
January 1935). "Colymbus,
Hesperornis, Podiceps: ein
Vergleich ihrer hinteren Extremität" [Colymbus,
Hesperornis, Podiceps: a
comparison of their...
- the late Cretaceous. Strong-swimming and
toothed predatory waterbird Hesperornis roamed late
Cretacean oceans. The
ammonite Discoscaphites iris, Owl Cr****...
