New digital restorations indicate that the structure and function of the shoulder joint were highly variable among Early Cretaceous birds, with such key features as the configuration of the triosseal canal and the nature of scapula-coracoid articulation showing considerable diversity.
Pectoral Girdle
The Postcranial Skeleton of Yanoconodon allini from the Early Cretaceous of Hebei, China, and Its Implications for Locomotor Adaptation in Eutriconodontan Mammals
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Pectoral Girdle - an overview
Transformation of the pectoral girdle in pennaraptorans: critical steps in the formation of the modern avian shoulder joint [PeerJ]
This strange little palaeoniscid': a new early actinopterygian genus, and commentary on pectoral fin conditions and function, Earth and Environmental Science Transactions of The Royal Society of Edinburgh
Evolution of the interclavicle and sternum along the avian stem
davidpeters1954, The Pterosaur Heresies
A simplified cladogram of derived maniraptoran theropods showing
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app005692018
This strange little palaeoniscid': a new early actinopterygian genus, and commentary on pectoral fin conditions and function, Earth and Environmental Science Transactions of The Royal Society of Edinburgh
Full article: The postcranial skeleton of Yanoconodon allini from the Early Cretaceous of Hebei, China, and its implications for locomotor adaptation in eutriconodontan mammals
