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Azab, M. M. & Elattaar, A. A. E. H. A. 1990. Pseudopygaulus romani (Cassiduloida, Echinoidea): a new species from the Upper Libyan (Lower Eocene) rocks of Egypt. Middle East Research Center Ain Shams University, Earth Science Series 4, 215-221.
175806
Azab, M. M.; Elattaar, A. A.
1990
Pseudopygaulus romani (Cassiduloida, Echinoidea): a new species from the Upper Libyan (Lower Eocene) rocks of Egypt
Middle East Research Center Ain Shams University, Earth Science Series
4: 215-221
Publication
Date action by
Pseudopygaulus romani Azab & Elattaar, 1990 † (original description)
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