单词 | furcula |
释义 | BETA Examples offurculaDictionary> Examples offurcula furculaisn’t in the Cambridge Dictionary yet. You can help! Add a definition On the third abdominal segment is the retinaculum that holds thefurcula. From Wikipedia ![]() Afurcula, or fused clavicles, is a boomerang shaped wishbone that would measure 29 cm wide and 14 cm high. From Wikipedia ![]() Thefurculais thought to be a link between dinosaurs and birds and is the center of debate surrounding the origin of birds. From Wikipedia ![]() In birds, the interclavicle is fused with the clavicles to form thefurcula(wishbone). From Wikipedia ![]() The chest consists of thefurcula(wishbone) and coracoid (collar bone), which two bones, together with the scapula (see below), form the pectoral girdle. From Wikipedia ![]() Areas of the skeleton with important similarities include the neck, pubis, wrist (semi-lunate carpal), arm and pectoral girdle,furcula(wishbone), and breast bone. From Wikipedia ![]() Afurcula(wishbone) was also present, but has only been recognized since 1996; in some cases furculae were confused with gastralia. From Wikipedia ![]() When the retinaculum releases thefurcula, it springs open and hits the substrate, propelling the springtail into the air. From Wikipedia ![]() The holotype preserves afurculaand a basket of fifteen pairs of gastralia. From Wikipedia ![]() Thefurculaand coracoid are degenerate, and their palatal bones and sphenoid bones touch each other. From Wikipedia ![]() Birds are the only vertebrate animals to have a fused collarbone (thefurculaor wishbone) or a keeled sternum or breastbone. From Wikipedia ![]() It holds thefurculaready for release in times of emergency. From Wikipedia ![]() The sternum had the deep and short shape typical of dynamic soarers, and bony outgrowths at the keel's forward margin securely anchored thefurcula. From Wikipedia ![]() They also have close relatives where thefurculais vestigal, reduced to a thin strap of ossified ligament, seemingly purposeless. From Wikipedia ![]() However, it has been shown since then that numerous tetanuran theropod species indeed have afurcula, apparently a tetanuran innovation. From Wikipedia ![]() The same is true for thefurcula, a bone which enhances skeletal bracing for the stresses of flight. From Wikipedia ![]() It also indicates that thefurculaof birds is derived from clavicles. From Wikipedia ![]() As in other flightless birds and some other flighted parrots, thefurculais not fused, but consists of a pair of clavicles lying in contact with each coracoid. From Wikipedia ![]() Tinamous have a proper semicircularfurcula, with no trace of a hypocleidium. From Wikipedia ![]() These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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