TY - CHAP A1 - Mortensen, T. TI - A Monograph of the Echinoidea. V, 1. Spatangoida I. Protosternata, Meridosternata, Amphisternata I. Palæopneustidæ, Palæostomatidæ, Aëropsidæ, Toxasteridæ, Micrasteridæ, Hemiasteridæ, 432 pp., C. A. Reitzel, Copenhagen. UR - https://www.marinespecies.org/rams/aphia.php?p=sourcedetails&id=3179 PY - 1950 Y2 - 2024-03-29 ER -