Pygostyle describes a skeletal condition in which the final few caudal vertebrae are fused into a single ossification, supporting the tail feathers and...

quill knobs (the anchor points for wing feathers on the forelimb) or a pygostyle (the fused vertebrae at the tail tip which often supports large feathers)...

to the pygostyle. The Ornithothoraces have a ploughshare-shaped pygostyle, while the more primitive members had longer, rod-shaped pygostyles. The earliest...

new group called Sauriurae. Said simply, modern birds have short, fused pygostyle tails, while Archaeopteryx retained the long tail characteristic of non-avian...

point and ended in a pygostyle, a set of fused tail vertebrae. The only other non-avian theropod that are known to have had a pygostyle are certain oviraptorosaurs...

The first element to disappear was the bony tail, being reduced to a pygostyle and the tail function taken over by feathers. Confuciusornis is an example...

Rumpless chickens are characterised by caudal dysplasia, the absence of the pygostyle or caudal appendage – the "parson's nose". This is the result of inheritance...

adaptation is the fusing of bones into single ossifications, such as the pygostyle. Because of this, birds usually have a smaller number of bones than other...

dorsal ribs, two sacral vertebrae, twenty-five caudal vertebrae with a pygostyle, three chevrons, an incomplete furcula and scapula, both coracoids, both...

Caudal vertebrae compose the tail, and the final few can be fused into the pygostyle in birds, or into the coccygeal or tail bone in chimpanzees (and humans)...

small, round pieces of dark meat are often considered to be a delicacy. Pygostyle (chicken's buttocks) and testicles: These are commonly eaten in East Asia...

alongside a short, triangular pygostyle, like the ones in modern birds, rather than the long, rod- or dagger-shaped pygostyles in more primitive avialans...

dorsally at the base of the tail (between the fourth caudal vertebra and the pygostyle) and is greatly variable in both shape and size. In some species, the...

synsacrum there are a few free caudal vertebrae, the last of which is the pygostyle to which the long, stiff tail feathers are attached. The central section...

have referred to as a "pygostyle", but which Witmer found was anatomically different and evolved separately from the pygostyle of birds (a bone which...

had a tail with a tail fan of feathers with caudal anatomy resembling a pygostyle, are not known to have been capable of flight, but some scientists, such...

(Hemicircus excepting). The inner rectrix pairs became stiffened, and the pygostyle lamina was enlarged in the ancestral lineage of true woodpeckers (Hemicircus...

pubis (innominate); 15. ilium (innominate); 16. caudal vertebrae; 17. pygostyle; 18. synsacrum; 19. scapula; 20. dorsal vertebrae; 21. humerus; 22. ulna;...

first toe reduced. The tail was likely not very elongated, and ended in a pygostyle that supported large feathers. The initial relationships of Oviraptor...

vibrissae around the gape. They have 13 flight feathers, no tail and a small pygostyle. Their gizzard is weak and their caecum is long and narrow. The eye of...

According to Döderlein the reduced tail of Anurognathus was similar to the pygostyle of modern birds. Its more typical "rhamphorhynchoid" characters include...

the lumbar region and sacrum), six free tail (caudal) vertebrae, and a pygostyle. The neck had well-developed areas for muscle and ligament attachment...

developed horny, toothless beaks by the very Late Jurassic and short pygostyle tails by the Early Cretaceous. While the archosaurs and dinosaurs were...

Similicaudipteryx). Another finding pointing to this is the discovery in Nomingia of a pygostyle, a bone that results from the fusion of the last tail vertebrae and is...

lower jaws were toothless and developed a horny beak. The tail ended in a pygostyle (the fusion of the last caudal vertebrae), which is known to support large...

pelvic cavity. Bone terminology Ganglion impar Human vestigiality Perineum Pygostyle Weisberger, Mindy (March 23, 2024). "Why don't humans have tails? Scientists...

maniraptoromorphs, and this process culminated in the appearance of the pygostyle, an ossification of fused tail vertebrae. In the late Cretaceous, about...

teeth. The tail is proportionately short, has thirteen vertebrae, and no pygostyle. The third finger has only two phalangeal bones, unlike non-avian dinosaurs...

Similicaudipteryx also differed from its relatives by possessing a dagger-shaped pygostyle (the bone at the end of the tail to which feathers anchor in birds) consisting...

There are large vibrissae around its gape, and it has no tail, only a pygostyle. It has a length of 45 to 55 cm (18–22 in) and the female weighs 2.1 to...