Origin of the vertebrate pectoral girdle and pectoral fins
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Brazeau et al 2023 report,"The past 150 years of debate has been shaped by two contentious theories: the ventrolateral fin-fold hypothesis and the archipterygium hypothesis. The latter proposes that fins and girdles evolved from an ancestral gill arch. Although studies in animal development have revived interest in this idea, it is apparently unsupported by fossil…
Figure 5 from Pelvic girdle and fin of Tiktaalik roseae
Embryonic origin and serial homology of gill arches and paired fins in the skate, Leucoraja erinacea
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Origin of the vertebrate pectoral girdle and pectoral fins – overturned
The Project Gutenberg eBook of The Vertebrate Skeleton, by Sidney H. Reynolds
Origin of the vertebrate pectoral girdle and pectoral fins – overturned
The Pterosaur Heresies, There's something very wrong with our pterosaurs.
Comparison of Pectoral Girdles in Various Vertebrates