Fig. 3From: Evolutionary development of the cephalopod arm armature: a reviewCirri of vampyromorph and cirrate octopods. a Schematic drawing illustrating the biserial arrangement of cirri. b Fossilised cirri along the arms of Glyphiteuthis sp. (Trachyteuthidae, Teudopseina), specimen BHI 5813, Hâdjoula, Cenomanian. Scale bar: 10 mmBack to article page