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New Nassellaria (Radiolaria) from the Lower Jurassic of the Canadian Cordillera

1996; NRC Research Press; Volume: 33; Issue: 3 Linguagem: Inglês

10.1139/e96-034

1480-3313

Fabrice Cordey, Elizabeth S. Carter,

Plant Diversity and Evolution

New nassellarian radiolarians are described from the Insular and Intermontane belts of the Canadian Cordillera in British Columbia. Two new genera (Atalanta n.gen. and Nitrader n.gen.) and three new species (Atalanta emmela n.gen., n.sp., Atalanta epaphrodita n.gen., n.sp., and Nitrader montegufonensis n.gen., n.sp.) were found in Lower Jurassic carbonate concretions of the Sandilands Formation of the Queen Charlotte Islands and in a chert pebble extracted from a Cretaceous conglomerate of the Intermontane Belt possibly correlative with the Spences Bridge Group. The discovery of new taxa within two distinct belts of the Canadian Cordillera stresses their biostratigraphic significance.