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Avialae ("bird wings") is a clade containing the only living dinosaurs, the birds, and their closest relatives.It is usually defined as all theropod dinosaurs more closely related to birds (Aves) than to deinonychosaurs, though alternative definitions are occasionally used (see below).
This list of Mesozoic birds is a comprehensive list of all Mesozoic dinosaurs that have been assigned to the clade Avialae (birds, in the broadest sense). The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomen dubium), or were not formally published (nomen nudum), as well as junior synonyms of more established names, and genera that are ...
The generic name (Archaeornithoides) means “shaped like an ancient bird” in Ancient Greek, from ἀρχαῖος, archaios, "ancient"; ὄρνις, ornis, "bird"; and εἶδος, eidos, "form". The specific descriptor deinosauriscus , "little dinosaur", alludes to the animal's small size for a dinosaur.
Archaeopteryx (/ ˌ ɑːr k iː ˈ ɒ p t ər ɪ k s /; lit. ' old-wing '), sometimes referred to by its German name, "Urvogel" (lit. Primeval Bird) is a genus of bird-like dinosaurs.The name derives from the ancient Greek ἀρχαῖος (archaīos), meaning "ancient", and πτέρυξ (ptéryx), meaning "feather" or "wing".
The smallest dinosaur ever found – a bird-like creature weighing less than a tenth of an ounce – has been discovered inside a drop of amber, where it was preserved for 99 million years.
Avimimus was a small, bird-like dinosaur with a length of 1.5 m (5 ft). [1] The skull was small compared to the body, though the brain [1] and eyes were large. The size of the bones which surrounded the brain and were dedicated to protecting it are large. [1] This is also consistent with the hypothesis that Avimimus had a proportionally large ...
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Paleornithologist Alan Feduccia sees Caudipteryx as a flightless bird evolving from earlier archosaurian dinosaurs rather than from late theropods. [21] Jones et al. (2000) found that Caudipteryx was a bird based on a mathematical comparison of the body proportions of flightless birds and non-avian theropods. Dyke and Norell (2005) criticized ...
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