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Full Description
This book offers a new explanation for the development of flight in mammals and offers detailed morphological descriptions of mammals with flapping flight. The skeletomuscular apparatus of the shoulder girdle and forelimbs of tree shrews, flying lemurs and bats is described in detail. Special attention is paid to the recognition of peculiar features of the skeleton and joints. For the basic locomotor patterns of flying lemurs and bats, the kinematic models of the shoulder girdle elements are developed. The most important locomotor postures of these animals are analyzed by means of statics. The key structural characters of the shoulder girdle and forelimbs of flying lemurs and bats, the formation of which provided transition of mammals from terrestrial locomotion to gliding and then, to flapping flight, are recognized. The concept is proposed that preadaptations preceding the acquisition of flapping flight could have come from widely sprawled forelimb posture while gliding from tree to tree and running up the thick trunks. It is shown that flying lemur is an adequate morphofunctional model for an ancestral stage of bats. The evolutionary ecomorphological scenario describing probable transformational stages of typical parasagittal limbs of chiropteran ancestors into wings is developed.
Contents
Chapter 1: Forelimb Morphology of Tree Shrews.- Chapter 2: Forelimb Morphology of Colugos.- Chapter 3: Forelimb Morphology of Bats.- Chapter 4: Functional Analysis of the Locomotor Apparatus of Colugos.- Chapter 5: Functional Analysis of the Locomotor Apparatus of Bats.- Chapter 6: Comparative Morphofunctional Analysis.- Chapter 7: Evolutionary Scenario for the Establishment of Flapping Flight.
