Family Calymnidae Mortensen 1907 (sea urchin)
Echinoidea - Holasteroida - Calymnidae
Full reference: T. Mortensen. 1907. The Danish Ingolf-Expedition 1895–1896. Vol. 4, No. 2. Echinoidea, pt. 2. Bianco Luno, Copenhagen 4(2):1-200
Parent taxon: Holasteroida according to A. Kroh and A. B. Smith 2010
See also Wagner and Durham 1966
Sister taxa: Coraster, Corechinus, Coryslus, Eoholaster, Hemipneustidae, Menuthiaster, Meridosternata, Nordenskjoeldaster, Physaster, Pomaster, Pseudholaster, Pseudholasteridae, Smithiaster, Stenonasteridae, Turanglaster
Subtaxa: Calymne
Ecology: semi-infaunal detritivore
Distribution: there are no occurrences of Calymnidae in the database