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IRMNG source details
Smith, A. B.; GallemÃ, J.; Jeffrey, C. H.; Ernst, G.; Ward, P. D. (1999). Late Cretaceous - early Tertiary echinoids from northern Spain: implications for the Cretaceous-Tertiary extinction event. Bulletin of the Natural History Museum, Geology Series. 55(2): 81-137.
185990
Smith, A. B.; Gallemí, J.; Jeffrey, C. H.; Ernst, G.; Ward, P. D.
1999
Late Cretaceous - early Tertiary echinoids from northern Spain: implications for the Cretaceous-Tertiary extinction event
Bulletin of the Natural History Museum, Geology Series
55(2): 81-137
Publication
Date action by
Sphenaster Jeffery in Smith, GallemÃ, Jeffery, Ernst & Ward, 1999 † accepted as Protaeropsis Doweld, 2016 † (original description)
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