Chitinozoans and microplankton from the Silurian Vargas Pena Shale, (Itacurubi Group) Chaco Basin, Paraguay.
Reference:
Wood,G.D. et al. (1988)
Chitinozoans and microplankton from the Silurian Vargas Pena Shale, (Itacurubi Group) Chaco Basin, Paraguay. American Association of Stratigraphic Palynologists,21st Annual Meeting,Program and Abstracts
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