Hemisphaeranthos is an extinct genus of sea cucumbers. The following species are recognised in the genus Hemisphaeranthos: †Hemisphaeranthos costifera Terquem & Berthelin, 1875 †Hemisphaeranthos elegans (Schlumberger, 1888) †Hemisphaeranthos frankei (Müller, 1912) †Hemisphaeranthos simplex A.H. Müller, 1964
References
Thuy B, Gale AS, Kroh A, Kucera M, Numberger-Thuy LD, Reich M, et al. (2012) Ancient Origin of the Modern Deep-Sea Fauna. PLoS ONE 7(10): e46913. doi:10.1371/journal.pone.0046913