1. Family Agalmatidae Brandt, 1835
2. Family Apolemiidae Huxley, 1859
3. Family Cordagalmatidae Pugh, 2016
4. Family Forskaliidae Haeckel, 1888
5. Family Physophoridae Eschscholtz, 1829
6. Family Pyrostephidae Moser, 1925

marine, brackish, fresh, terrestrial

Haeckel, E. (1888). System der Siphonophoren auf phylogenetischer Grundlage entworfen. <em>Jenaische Zeitschrift für Naturwissenschaft.</em> 22: 1-46., available online at https://www.biodiversitylibrary.org/page/12007523
page(s): 38 [details] 

Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2025). World Hydrozoa Database. Physonectae. 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=135335 on 2025-05-21

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. Physonectae. Accessed at: https://www.marinespecies.org/charms/aphia.php?p=taxdetails&id=135335 on 2025-05-21

[taxonomic tree]  [list species]