@article{Porifera:SourceID:7578, author = {Hancock, A.}, journal = {Annals and Magazine of Natural History}, title = {On the Excavating Powers of certain Sponges belonging to the genus Cliona with descriptions of several new Species,and an allied generic form.}, url = {https://www.biodiversitylibrary.org/page/16085612}, year = {1849} }