By A Mystery Man Writer
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…
Pectoral Girdle - an overview
19.1 Types of Skeletal Systems – Concepts of Biology – 1st Canadian Edition
New Study Showing Pelvic Girdles Arose Before the Origin of Movable Jaws----Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences
Embryonic origin and serial homology of gill arches and paired fins in the skate, Leucoraja erinacea
Image from page 110 of A laboratory manual for comparativ…
The first vertebrate sexual organs evolved as an extra pair of legs
davidpeters1954, The Pterosaur Heresies
Comparison of Pectoral Girdles in Various Vertebrates
davidpeters1954, The Pterosaur Heresies
Comparative anatomy of vertebrates
The Pterosaur Heresies, There's something very wrong with our pterosaurs.
New analysis of ancient fish may explain how shoulder evolved