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The "transitional shorebirds" ("Graculavidae") are a generally Mesozoic form taxon formerly believed to constitute the common ancestors of charadriiforms, waterfowl and flamingos. They are now assumed to be mostly basal taxa of the charadriiforms and/or "higher waterbirds", which probably were two distinct lineages 65 mya already, [ 16 ] and ...
A living fossil is an extant taxon that phenotypically resembles related species known only from the fossil record. To be considered a living fossil, the fossil species must be old relative to the time of origin of the extant clade. Living fossils commonly are of species-poor lineages, but they need not be.
Four new fossils of Ichthyornis, which had both a beak and teeth and lived a lifestyle like modern gulls, offer striking evidence of this Cretaceous Period bird's important position in avian ...
Palaeognathae (/ ˌ p æ l i ˈ ɒ ɡ n ə θ i /; from Ancient Greek παλαιός (palaiós) 'old' and γνάθος (gnáthos) 'jaw') is an infraclass of birds, called paleognaths or palaeognaths, within the class Aves of the clade Archosauria. It is one of the two extant infraclasses of birds, the other being Neognathae, both of which form ...
The fossil, which included 80% of the bird's skeleton, indicated it was a competent flier. Its name means "Nava's bird," named for William Nava, the scientist who discovered the fossil in 2016 in ...
Also called "basal Ornithuromorpha". [15] Essentially modern birds, except many still possess a few primitive features such as teeth or wing claws. These have the plowshare-shaped pygostyle and proper tail fan as seen in most living birds.
“We realized we had millions of bones from sea creatures of all sorts, mostly fish, but also sea mammals, sea turtles, shorebirds, kelp and other types of seaweed and invertebrates like shells ...
The Pelagornithidae, commonly called pelagornithids, pseudodontorns, bony-toothed birds, false-toothed birds or pseudotooth birds, are a prehistoric family of large seabirds. Their fossil remains have been found all over the world in rocks dating between the Early Paleocene and the Pliocene - Pleistocene boundary.