-
Hesperornithes is an
extinct and
highly specialized group of
aquatic avialans closely related to the
ancestors of
modern birds. They
inhabited both marine...
- definition: "extant
birds and all
other taxa, such as
Ichthyornis and
Hesperornithes, that are
closer to
extant birds than is Archaeopteryx".
Later he and...
-
exists for the
ecology of B.
advenus than for any
other member of the
Hesperornithes, with the
possible exception of
Hesperornis regalis, but
still much...
- 2001:
Potamornis skutchi. This was
almost certainly a
member of the
Hesperornithes, the
hefty and
toothed flightless diving birds of the
Mesozoic seas...
-
bizarre as
Yungavolucris and Avisaurus.
Though mostly small,
marine Hesperornithes became relatively large and flightless,
adapted to life in the open...
-
archaic clades of birds, such as Enantiornithes, Ichthyornithes, and
Hesperornithes,
persisted to the
latest Maastrichtian but
became extinct during the...
- of
enantiornithe and
ornithurine forms.
Though mostly small,
marine hesperornithes became relatively large and flightless,
adapted to life in the open...
- †
Hesperornithes...
- Ornithomimosauria, Oviraptorosauria, Deinonychosauria, Enantiornithes, and
Hesperornithes. Only the Neornithes,
otherwise known as
modern birds, survived, and...
- penguins, ratites, and
terror birds also
filled niches left by the
hesperornithes and
other extinct dinosaurs.
Myctophids first appeared in the Late Palaeocene...
