单词 | furcula |
例句 | They also had wishbones, or furculae, another chapter of the story. Fine Feathered Fiends: ‘Dinosaurs Among Us’ at the American Museum of Natural History 2016-03-17T04:00:00Z The furcula is flexible enough to bend and provide support to the shoulder girdle during flapping. Fundamentals of Biology 2015-01-01T00:00:00Z They use an appendage called the furcula to launch themselves into the air when threatened. How these insects bite 700 times faster than you can blink 2017-08-31T04:00:00Z He was the paleontologist who discovered the furcula of a Tyrannosaurus rex. In the World of Big Lizards, Peter Larson is a Big Name The keel is pushed back to the distal third of the sternum, whilst the original anterior margin of the keel is correspondingly elongated, and the furcula fused with the rostral portion. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z With our anciently domesticated birds, the wings have been little used, and they are slightly reduced; with their decrease, the crest of the sternum, the scapul�, coracoids, and furcula, have all been reduced. The Variation of Animals and Plants Under Domestication, Volume II (of 2) The extremities of the furcula, where articulated to the coracoids, vary considerably in outline. The Variation of Animals and Plants Under Domestication, Vol. I. Tenaculum: in Collembola, a small organ which holds the furcula in position when at rest: = catch. Explanation of Terms Used in Entomology “The clavicle part is real. In birds, the fused clavicles form the furcula, or wishbone. And nowadays—in 2014—we know that dinosaurs had wishbones, too.” In the World of Big Lizards, Peter Larson is a Big Name The clavicles, when united, as usual, form the furcula; mostly the distal median portion is drawn out into a hypocleidium of various shape. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z The arms of the furcula in all the specimens which I compared, diverged less, proportionally with the size of body, than in the rock-pigeon; and the whole furculum was proportionally shorter. The Variation of Animals and Plants under Domestication — Volume 1 The arms of the furcula in all the specimens which I compared, diverged less, proportionally with the size of body, than in the rock-pigeon; and the whole furcula was proportionally shorter. The Variation of Animals and Plants Under Domestication, Vol. I. The two arms of the furcula in pouters diverge less, proportionally to their length, than in the rock-pigeon; and the symphysis is more solid and pointed. The Variation of Animals and Plants Under Domestication, Vol. I. In a barb, which in all its measurements was a little larger than the same rock-pigeon, the furcula was a quarter of an inch shorter. The Variation of Animals and Plants Under Domestication, Vol. I. In a pouter, the furcula had not been lengthened proportionally with the increased length of the body. The Variation of Animals and Plants Under Domestication, Vol. I. We thus clearly see that the sternum, scapul�, and furcula are all reduced in proportional length; but when we turn to the wings we find what at first appears a wholly different and unexpected result. The Variation of Animals and Plants Under Domestication, Vol. I. This reduction of the crest in all the breeds probably accounts for the great variability, before referred to, in the curvature of the furcula, and in the shape of its sternal extremity. The Variation of Animals and Plants Under Domestication, Vol. I. The size and shape of the perforations in the sternum, and the size and divergence of the arms of the furcula, differ. The Variation of Animals and Plants Under Domestication, Vol. I. In a short-faced tumbler, which measured from tip to tip of wings 24 inches, therefore only 2� inches less than the rock-pigeon, the furcula was barely two-thirds of the length of that of the rock-pigeon. The Variation of Animals and Plants Under Domestication, Vol. I. |
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