Echinoidea - Spatangoida - Schizasteridae
Full reference: A. G. Fischer. 1966. Spatangoids. Treatise on Invertebrate Paleontology, Part U. Echinodermata. Geological Society of America and University of Kansas Press, Boulder and Lawrence 3(2):U543-U628
Parent taxon: Linthia according to A. G. Fischer 1966
Sister taxa: Linthia (Lutetiaster), Linthia alabamensis, Linthia avilensis, Linthia brodermanni, Linthia cretacica, Linthia garciai, Linthia ghiroboensis, Linthia hanoverensis, Linthia houzeaui, Linthia monteroae, Linthia navillei, Linthia praenipponica, Linthia prima, Linthia sanrafaelensis, Linthia sudanensis, Linthia variabilis, Linthia wilmingtonensis, Schizaster (Linthia) ocalanus, Schizaster (Linthia) tumidulus
Subtaxa: Linthia (Linthia) harmatuki
Ecology: slow-moving shallow infaunal deposit feeder-detritivore
Distribution:
• Eocene of United States (7: North Carolina, South Carolina collections)
Total: 7 collections each including a single occurrence