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Ornithurans Temporal range:
Early Cretaceous - Present, 130–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Cast
skeleton of
Ichthyornis dispar,
Rocky Mountain Dinosaur...
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after its fish-like vertebrae) is an
extinct genus of
toothy seabird-like
ornithuran from the late
Cretaceous period of
North America. Its
fossil remains are...
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Limenavis is a
genus of
ornithuran dinosaurs from the Late Cretaceous. It
lived about 70
million years ago,
around the Campanian-Maastrichtian boundary...
- feet for
underwater locomotion.
Gansus was
described as the
oldest known ornithuran. The Ornithurae, however, has been
given several very
different definitions...
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birds from the
Early Cretaceous Ichthyornis was a toothed, seabird-like
ornithuran from the Late
Cretaceous Rhynchocephalians (which
today only includes...
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although most
scientists have
considered it an
avialan (either a
primitive ornithuran or enantiornithine).
Fossils were
found in the
Bissekty Formation in the...
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Hesperornis (meaning "western bird") is a
genus of cormorant-like
Ornithuran that
spanned throughout the
Campanian age, and
possibly even up to the early...
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Iaceornis is a
genus of
marine ornithuran dinosaurs closely related to
modern birds. It was
endemic to
North America during the Late Cretaceous, living...
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Lamarqueavis is an
extinct genus of
ornithuran dinosaurs from the
family Cimolopterygidae known from Late Cretaceous-aged
rocks from Argentina, Canada...
- specimen, and
confirmed that it was
indeed a
primitive euornithean (=
ornithuran)
using a
phylogenetic analysis.
Their study also
supported the distinction...
