Origin of the vertebrate pectoral girdle and pectoral fins

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…

New Study Showing Pelvic Girdles Arose Before the Origin of Movable Jaws----Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences

The Pterosaur Heresies, There's something very wrong with our pterosaurs.

davidpeters1954, The Pterosaur Heresies

Fossil Musculature of the Most Primitive Jawed Vertebrates

The Girdles Sternum and Paired Appendages, PDF, Anatomical Terms Of Location

davidpeters1954, The Pterosaur Heresies

Pectoral and Pelvic Girdles – Morphology of the Vertebrate Skeleton

davidpeters1954, The Pterosaur Heresies

Frontiers Problems in Fish-to-Tetrapod Transition: Genetic Expeditions Into Old Specimens