Endocranial morphology of the petalichthyid placoderm Ellopetalichthys scheii from the Middle Devonian of Arctic Canada, with remarks on the inner ear and neck joint morphology of placoderms

• Main Authors: Castiello, Marco, Jerve, Anna, Burton, Maria Grace, Friedman, Matt, Brazeau, Martin D.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: NRC Research Press (a division of Canadian Science Publishing) 2020
• Subjects: Arctic; Ellesmere Island; Canada; Labyrinth
• Online Access: http://hdl.handle.net/1807/102183; http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2020-0005

Petalichthyid and “acanthothoracid” placoderms have taken pivotal positions in the debate on placoderm—and, by extension, jawed vertebrate — relationships owing to perceived similarities with certain jawless vertebrates. Neurocranial characters are integral to current hypotheses of early gnathostome...