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Echinoidea source details
Nisiyama, S. 1950b. Fossil Echinoidea from the Miyako Cretaceous. Short Papers of the Institute of Geology and Paleontology Tohoku University (Sendai) 2, 29-38.
169431
Publication
from Kier & Lawson (1978)
Describes new species of echinoids, Pseudocidaris simulans, Goniopygus atavus, Holectypus (Coenholectypus) peridoneus, and Holaster clypeatulus, from the lower Cretaceous Hiraiga sandstone (Aptian or Albian) of the Miyako region, Iwate, Japan.
Date action by
Goniopygus atavus Nisiyama, 1950 † (original description)
Holaster clypeatulus Nisiyama, 1950 † (original description) Holectypus (Coenholectypus) peridoneus Nisiyama, 1950 † (original description) Pseudocidaris simulans Nisiyama, 1950 † (original description) |