Title: A Monograph on the Structure and Development of the Shoulder Girdle and Sternum in the Vertebrata
Publisher: HardPress Publishing
Publication Date: 2019
Language: English
ISBN 10: 0461363208
ISBN 13: 9780461363203
Binding: PAP
Condition: New
Weight: 728 grams

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Synopsis

A Monograph On The Structure And Development Of The Shoulder Girdle And Sternum In The Vertebrata by William Kitchen Parker. This comprehensive study provides a cross-taxa osteological survey of the shoulder girdle and sternum across vertebrates, with emphasis on embryology, comparative anatomy, and evolutionary relationships, reinforced by extensive plate illustrations that illuminate homologies and developmental pathways. In its birds-focused chapters, the work traces variations in girdle components (scapula, coracoid, clavicles, interclavicle) and the sternum (keel, xiphoid regions, notches, costal processes) across avian orders, highlighting endosteal versus ectosteal ossification, meso-scapular and pre-coracoid segmentation, and the presence or absence of the interclavicle, aided by embryonic examples (e.g., six-week crane embryo) to illustrate gradual fusion and formation. The mammal section extends to monotremes and major orders, noting mosaic shoulder girdles, reductions of clavicles, variable sternum segmentation, and diverse ossification patterns. The methodology blends comparative osteology, embryology imagery, and plate-based illustration to argue for homologies and evolutionary trajectories, emphasizing functional morphology and developmental trajectories over teleology, and positing shoulder-girdle and sternum architecture as central to vertebrate relationships. Overall, the monograph presents a taxonomic-ontogenetic atlas tracing the evolution of the shoulder girdle and sternum from generalized to highly derived forms across birds and mammals.

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