Verrill, A. E. (1896). The Opisthoteuthidae, a remarkable new family of deep sea Cephalopoda, with remarks on some points in molluscan morphology. American Journal of Science. ser. 4, 2(7): 74-80.
456017
Verrill, A. E.
1896
The Opisthoteuthidae, a remarkable new family of deep sea Cephalopoda, with remarks on some points in molluscan morphology.