Where: Alaska (68.7° N, 165.8° W: paleocoordinates 48.2° N, 1.1° W)
• coordinate stated in text
When: Siksikpuk Formation, Permian (298.9 - 252.2 Ma)
• 21 ft. above Lisburne-Siksikpuk contact in stream valley
Environment/lithology: marine; lithified lithology not reported
Size class: macrofossils
• dorsal finspine
Collected by K. J. Bird in 1972
Primary reference: J. G. Maisey. 1982. Studies on the Paleozoic Selachian Genus Ctenacanthus Agassiz: No. 2. Bythiacanthus St. John and Worthen, Amelacanthus, New Genus, Eunemacanthus St. John and Worthen, Sphenacanthus Agassiz, and Wodnika Munster. American Museum Novitates 2722:1-24 [M. Clapham/T. Wolfe/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 119889: authorized by Matthew Clapham, entered by Trisha Wolfe on 04.11.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Chondrichthyes | |
Wodnika borealis elasmobranch |