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Skull in situ Human head skull from side Anatomy of a flat bone – the periosteum of the neurocranium is known as the pericranium Human skull from the front Side bones of skull. The human skull is the bone structure that forms the head in the human skeleton. It supports the structures of the face and forms a cavity for the brain. Like the ...
An antorbital fenestra (plural: fenestrae) is an opening in the skull that is in front of the eye sockets. This skull character is largely associated with archosauriforms, first appearing during the Triassic Period. Among extant archosaurs, birds still possess antorbital fenestrae, whereas crocodylians have lost them. The loss in crocodylians ...
The avian brain is the central organ of the nervous system in birds. Birds possess large, complex brains, which process, integrate, and coordinate information received from the environment and make decisions on how to respond with the rest of the body. Like in all chordates, the avian brain is contained within the skull bones of the head.
Swimming birds have a wide sternum, walking birds have a long sternum, and flying birds have a sternum that is nearly equal in width and height. [19] The chest consists of the furcula (wishbone) and coracoid (collar bone) which, together with the scapula , form the pectoral girdle ; the side of the chest is formed by the ribs, which meet at the ...
The following other wikis use this file: Usage on bs.wikipedia.org Anatomija ptica; Usage on eo.wikipedia.org Birdanatomio; Usage on es.wikipedia.org
The holotype skull is about 716 mm (2.3 ft) long from the tip of the beak to the center of the sagittal nuchal crest at the upper back of the head (a size likened to the size of a horse's skull), making it the largest skull of any known bird. The hind end of the skull is 312 mm (12 in) wide. The tarsometatarsus leg bone is 437 mm (17 in) long.
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Compared to the other vertebrate flying groups, the birds and bats, pterosaur skulls were typically quite large. [24] Most pterosaur skulls had elongated jaws. [24] Their skull bones tend to be fused in adult individuals. [24] Early pterosaurs often had heterodont teeth, varying in build, and some still had teeth in the palate.