Reassessment of Ischnacanthus?scheii Spjeldnaes (Acanthodii, Ischnacanthiformes) from the latest Silurian or earliest Devonian of Ellesmere Island, arctic Canada

• Published in: Canadian Journal of Earth Sciences
• Main Author: Burrow, Carole J.
• Other Authors: Sues, Hans
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 2013
• Subjects: Arctic; Canada; Canadian Arctic Archipelago; Cornwallis; Cornwallis Island; Devon Island; Ellesmere Island; Greenland; Nunavut; Arctic Archipelago; North Greenland
• Online Access: http://dx.doi.org/10.1139/cjes-2013-0068; http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjes-2013-0068; http://www.nrcresearchpress.com/doi/pdf/10.1139/cjes-2013-0068

Articulated specimens of jawed fishes, and assemblages of disarticulated elements that can be assigned to a single biological species, are extremely rare from pre-Devonian deposits. The acanthodian species Ischnacanthus? scheii Spjeldnaes is based on a monospecific assemblage, comprising fin spines,...