Journal article
Complex noncalcified macroalgae from the Silurian of Cornwallis Island, Arctic Canada
ST Loduca, MJ Melchin, H Verbruggen
Journal of Paleontology | CAMBRIDGE UNIV PRESS | Published : 2011
DOI: 10.1666/10-025.1
Abstract
Thin beds of silty limestone within a Ludlovian (Ludfordian) section of the Cape Phillips Formation on Cornwallis Island, Arctic Canada, contain numerous specimens of noncalcified macroalgae in association with dendroid and graptoloid graptolites, brachiopods, and trilobites. The algal material, preserved as carbonaceous compressions, represents three new taxa, each characterized by a central axis surrounded by laterals. Laterals of Eocladus xiaoi n. gen. n. sp. are thin and branch to the fifth order whereas those of Chaetocladus captitatus n. sp. are undivided and form a distinctive capitulum. Thalli of Palaeocymopolia nunavutensis n. gen. n. sp. have a branched, serial-segmented form and a..
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Funding Acknowledgements
B. Granier and an anonymous reviewer provided helpful comments on an earlier version of this manuscript. We thank E. Landing for assistance with specimens reposited in the New York State Museum. Field work by M. M. in the Arctic was supported by funding from the Natural Sciences and Engineering Research Council of Canada; the Polar Continental Shelf Project provided logistical support and A.D. McCracken provided field assistance. H. V. is currently a postdoctoral fellow of the Research Foundation-Flanders. Work on this project by S. L. was supported in part by grants from the College of Arts and Sciences and the Graduate School at EMU.