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