Which specific wing bones were crucial for extrapolating the massive dimensions of Pelagornis?
Answer
Humerus and the coracoid
Despite the initial fossil finding not constituting a complete skeleton of Pelagornis, researchers were able to accurately extrapolate its truly massive dimensions by studying key elements of its wing support structure. Specifically, the size of the humerus (the upper arm bone) and the coracoid (a large bone forming part of the shoulder girdle) were sufficient evidence. These bones are central to wing attachment and support, and their unusually large size relative to modern birds provided the necessary basis for calculating the overall immense size of the ancient flyer.
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