Type species: Spongia panicea Pallas, 1766, by subsequent designation.
- Fleming, J. 1828. A history of British animals, exhibiting the descriptive characters and systematical arrangement of the genera and species of quadrupeds, birds, reptiles, fishes, Mollusca, and Radiata of the United Kingdom; including the indigenous, extirpated, and extinct kinds, together with periodical and occasional visitants. Bell & Bradfute: Edinburgh/James Duncan: London. xxiii + 565 pp. BHL Reference page.
- Santos, G.G., Nascimento, E. & Pinheiro, U. 2018. Halichondriidae Gray, 1867 from the Northeastern Brazil with description of a new species. Zootaxa 4379(4): 556–566. DOI: 10.11646/zootaxa.4379.4.7 Reference page.