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Desmocysta plekta
Desmocysta plekta Duxbury, 1983
Holotype: Duxbury, 1983, pl.8, fig.11, text-fig.20D
Locus typicus: Isle of Wight, England
Stratum typicum: Aptian
Original diagnosis: Duxbury, 1983, p.45
A sphaeroidal to ovoidal dinoflagellate cyst species which always displays a distinct antapical protrusion and which may display a similar protrusion at the apex. A loarge, two paraplate, precingular archaeopyle is invariably presentand this is the only expression of paratabulation in an otherwise featureless cyst. Long, fine filaments (usually 10 or more) extend from a small area at the antapex and these may be more than twice the length of the capsule. These are usually tangled to some extent and may form a continuous "rope". The filaments terminate in a granular, amorphous mass.
Dimensions: Range: Cyst 52(46)35x44(35)32 Ám, antapical filaments 81(46)26 Ám (27 specimens).
Holotype: Duxbury, 1983, pl.8, fig.11, text-fig.20D
Locus typicus: Isle of Wight, England
Stratum typicum: Aptian
Original diagnosis: Duxbury, 1983, p.45
A sphaeroidal to ovoidal dinoflagellate cyst species which always displays a distinct antapical protrusion and which may display a similar protrusion at the apex. A loarge, two paraplate, precingular archaeopyle is invariably presentand this is the only expression of paratabulation in an otherwise featureless cyst. Long, fine filaments (usually 10 or more) extend from a small area at the antapex and these may be more than twice the length of the capsule. These are usually tangled to some extent and may form a continuous "rope". The filaments terminate in a granular, amorphous mass.
Dimensions: Range: Cyst 52(46)35x44(35)32 Ám, antapical filaments 81(46)26 Ám (27 specimens).