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

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Castiello, Marco, Jerve, Anna, Burton, Maria Grace, Friedman, Matt, Brazeau, Martin D.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 2021
• Subjects: General Earth and Planetary Sciences; Arctic; Ellesmere Island; Canada; Labyrinth
• Online Access: http://dx.doi.org/10.1139/cjes-2020-0005; https://cdnsciencepub.com/doi/full-xml/10.1139/cjes-2020-0005; https://cdnsciencepub.com/doi/pdf/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 gnathosto...