-
Hesperornithes is an
extinct and
highly specialized group of
aquatic avialans closely related to the
ancestors of
modern birds. They
inhabited both marine...
-
Mesozoic dinosaur groups such as the
arboreal enantiornithines,
aquatic hesperornithines, and even the
larger terrestrial theropods (in the form of Gastornis...
- is a
genus of
hesperornithine which lived during the late
Albian to the
early Cenomanian,
making them the
oldest known hesperornithines.
Fossils have...
-
rossicus was the
largest species of
Hesperornis and
among the
largest hesperornithines,
slightly smaller than the
large Canadian genus Canadaga.
Aside from...
- understood, as
specimens of
juveniles are rare, and many were
mistaken for
hesperornithine birds when
discovered 100
years ago. However, the
discovery of several...
-
inadequately known, it
appears to have been one of the more
basal hesperornithines.
Mortimer (2004) Mortimer,
Michael (2004). "The
Theropod Database:...
- well as to grebes,
hesperornithines, and penguins. †Potamornis †Potamornis
skutchi 66 Ma
Lance Formation, Wyoming, USA A
hesperornithine with
unclear relationships...
-
Stratigraphic position Material Notes Images cf.
Baptornis Indeterminate A
hesperornithine bird cf.
Cimolopteryx Indeterminate Partial coracoid A
possible charadriiform...
- with a
height of
approximately 1 m (3.3 ft). The
largest known of the
hesperornithines was
Canadaga arctica at 2.2 m (7 ft 3 in) long. One of the heaviest...
-
mongoliensis Bügiin Tsav "Nearly
complete left tarsometatarsus." A
hesperornithine.
Gurilynia G.
nessovi Guriliin Tsav
Middle or
Upper "Left coracoid...
