Two new early Cretaceous dinocyst species from the northern North Sea

22 2 Mon, 01/01/1979 - 12:00 May 427 437

DAVEY, R. J. 1979. Two new early Cretaceous dinocyst species from the northern North Sea. Palaeontology, 22, 2, 427–437.

Roger J. Davey Two new species of dinocyst, Oligosphaeridium abaculum and Systematophora silyba, are described from a Barremian assemblage obtained from the northern North Sea north-east of the Shetlands. O. abaculum is the first-known hystrichosphere with plate-centred tubular processes on which a clearly defined paratabulation is present and this is described in detail. The paratabulation is of the Gonyaulax-type, and it is inferred that chorate cysts with similar morphology are also of this type. The Palaeontological Association (Free Access)