Riegel, 1974
From dinoflaj2
Riegel, W., 1974: New forms of organic-walled microplankton from an Upper Cretaceous assemblage in southern Spain. Revista española de micropaleontología, v.6, no.3, p.347-366, pl.1-3.
Riegel, W., 1974: New forms of organic-walled microplankton from an Upper Cretaceous assemblage in southern Spain. Revista española de micropaleontología, v.6, no.3, p.347-366, pl.1-3.
