This genus is immediately distinguished by its small scale-like secondary spines and its coarse and distinctively ornamented primary spines. Menocidaris has a very similar spine morphology, but was distinguishing by Philip (1964) because of its lack of extrascrobicular zones and its non-conjugate pore-pairs. Both characters probably reflect the small size of the specimens of M. compta, and the two genera are probably best synonymized. Philip provides a discussion of the fossil record of Chondrocidaris-type spines.
Agassiz, A. A. 1863. List of echinoderms sent to different institutions in exchange for other specimens. Bulletin of the Museum of Comparative Zoology, Harvard College, 1 (2), 17-28.
Mortensen, T. 1928. A monograph of the Echinoidea. 1, Cidaroidea. C. A. Reitzel, Copenhagen.
Philip, G. M. 1964. The Tertiary echinoids of South-East Australia. Proceedings of the Royal Society of Victoria 77, 433-477, pls 58-67.