Cyptendoceratidae Dataset Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities Rank FAMILY Classification phylum Mollusca class Cephalopoda order Tetrabranchia family Cyptendoceratidae Name Homonyms Cyptendoceratidae Zhuravleva 1994 Cyptendoceratidae