Silurian Archaeoscyphia from the Canadian Arctic: a case for simplified generic taxonomy in the anthaspidellid lithistids (Porifera)

• Published in: Canadian Journal of Earth Sciences
• Main Author: Freitas, Tim A. de
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1989
• Subjects: Arctic; Rigby
• Online Access: http://dx.doi.org/10.1139/e89-159; http://www.nrcresearchpress.com/doi/pdf/10.1139/e89-159

Abundant anthaspidellid orchoclad lithistids occur in thin biostromes of Wenlockian age of the Canadian Arctic. The sponges are well preserved, and many have similar internal architecture. Synonymization of Calycocoelia Bassler, 1927, Rhopalocoelia Raymond and Okulitch, 1940, Somersetella Rigby and...