Origin of the vertebrate pectoral girdle and pectoral fins – overturned

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…

davidpeters1954, The Pterosaur Heresies

Ventral view of the cephalic region and pectoral girdle of Liobagrus

Diversity, Free Full-Text

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

Origin of the vertebrate pectoral girdle and pectoral fins – overturned

Pectoral Girdle A pectoral girdle is a skeletal complex in the body wall immediately behind the head that articulates with the anterior fins or limbs. - ppt video online download

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Pectoral Girdle - an overview

GEOL431 - Vertebrate Paleobiology

A Bayesian approach to dynamic homology of morphological characters and the ancestral phenotype of jawed vertebrates

Pectoral and pelvic girdles hi-res stock photography and images - Alamy

davidpeters1954, The Pterosaur Heresies

Origin of the vertebrate pectoral girdle and pectoral fins – overturned