1. Family Grimpoteuthidae O'Shea, 1999
2. Family Opisthoteuthidae A. E. Verrill, 1896

marine, brackish, fresh, terrestrial

(of Opisthoteuthidae A. E. Verrill, 1896) Verrill, A. E. (1896). The Opisthoteuthidae, a remarkable new family of deep sea Cephalopoda, with remarks on some points in molluscan morphology. <em>American Journal of Science.</em> ser. 4, 2(7): 74-80., available online at https://www.biodiversitylibrary.org/page/40353964 [details] 

MolluscaBase eds. (2025). MolluscaBase. Opisthoteuthoidea A. E. Verrill, 1896. Accessed through: Xu, K., An, J., Ding, L., Dong, D., Gao, Y., Huang, Y., Jiang, W., Lei, Y., Li, K., Li, X., Li, Y., Liang, X., Lin, G., Lin, M., Liu, H., Liu, J., Liu, W., Liu, X., Lu, D., Ma, Z., Ren, X., Sha, Z., Sun, J., Sun, S., Sun, Z., Tian, L., Wang, D., Wang, J., Wu, X., Xia, B., Xiao, N., Yin, J., Zhang, J., Zhang, S., Zhang, X., Zhao, E., Zheng, X., Zhou, H., Zhou, J. & Zhou, K. (2025) Chinese Register of Marine Species at: https://www.marinespecies.org/charms/aphia.php?p=taxdetails&id=1765494 on 2025-05-31

Xu, K., An, J., Ding, L., Dong, D., Gao, Y., Huang, Y., Jiang, W., Lei, Y., Li, K., Li, X., Li, Y., Liang, X., Lin, G., Lin, M., Liu, H., Liu, J., Liu, W., Liu, X., Lu, D., Ma, Z., Ren, X., Sha, Z., Sun, J., Sun, S., Sun, Z., Tian, L., Wang, D., Wang, J., Wu, X., Xia, B., Xiao, N., Yin, J., Zhang, J., Zhang, S., Zhang, X., Zhao, E., Zheng, X., Zhou, H., Zhou, J. & Zhou, K. (2025). Chinese Register of Marine Species. Opisthoteuthoidea A. E. Verrill, 1896. Accessed at: https://www.marinespecies.org/charms/aphia.php?p=taxdetails&id=1765494 on 2025-05-31

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