Trinajstic, KateSanchez, SophieDupret, VincentTafforeau, PaulLong, JohnYoung, GavinSenden, TimothyBoisvert, CatherinePower, NicolaAhlberg, Per2015-12-130036-8075http://hdl.handle.net/1885/73360The transition from jawless to jawed vertebrates (gnathostomes) resulted in the reconfiguration of the muscles and skeleton of the head, including the creation of a separate shoulder girdle with distinct neck muscles. We describe here the only known exampKeywords: data acquisition; phylogenetics; vertebrate; abdominal wall musculature; article; fossil; muscle; nonhuman; phylogeny; priority journal; shark; shoulder girdle; tetrapod; Upper Devonian; vertebrate; Animals; Biological Evolution; Fishes; Fossils; Maxillof201310.1126/science.12372752016-02-24