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Ichthyornithes is an extinct group of toothed avialan dinosaurs very closely related to the common ancestor of all modern birds. They are known from fossil remains found throughout the late Cretaceous period of North America, though only two genera, Ichthyornis and Janavis , are represented by complete enough fossils to have been named.
Ichthyornis (meaning "fish bird", 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 known from the chalks of Alberta, Alabama, Kansas (Greenhorn Limestone), New Mexico, Saskatchewan, and Texas, in strata that were laid down in the Western Interior Seaway during the Turonian through ...
Ornithurae (meaning "bird tails" in Greek) is a natural group that includes modern birds and their very close relatives such as the ichthyornithines and the hesperornithines.
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Archaeornithura had a moderately advanced plumage, fan-shaped tail feathers, a U-shaped furcula, highly fused wing apexes, and a well-developed alula – a feathered first finger projecting on the front edge of the wing that is typically used to boost manoeuvrability during flight. [2]
Next on the royal family tree is Prince William, Duke of Cambridge, the first-born son of Prince Charles and his late wife, Diana, Princess of Wales. By virtue of his being male, from the moment ...
But these are probably all closely related to the better-known Pelagornis, type genus of the family Pelagornithidae. And even if Cyphornis is the senior synonym of all the later-described genera (which is not very likely), according to the rules of zoological nomenclature the family name Pelagornithidae would not change.
Orangutans belong to the Hominidae family, also called the great apes. They are highly intelligent and share around 96.4% of our DNA. Orangutans are the only great apes in Asia, making their homes ...
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