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Batioladinium matyjae
Batioladinium matyjae, Poulsen, 1996, p. 60, pl. 3, Fig. 7
Holotype: Poulsen, 1996, pl.3, fig.7.
Recorded occurrences: Volgian to Early Valanginian in Britain and Ryazanian (Gochteodinia villosa Zone, Egmontodinium expiratum Subzone) in Denmark.
Age: Volgian–early Valanginian.
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Original description:
Diagnosis:
Elongate, ellipsoidal cyst with one apical horn and two short antapical horns. Autophragm only, ornamented with granules which increase in size and density toward the hypocyst, where spinules and tubercles are developed.
Paratabulation indicated by the archeopyle only. The cingulum, however, may be indicated.
Archeopyle combined, type (tA)2I.
Description:
An elongate species with overall length greater than twice the width. The apical horn is relatively short and merges into the main part of the cyst. The antapical horns are short and rounded.
The wall may be densely granular and pitted. The ornament becomes stronger towards the antapex, becoming coarsely granular with irregular spinules. The spinules may also be granular and sometimes particularly well developed on the antapical horns.
The archeopyle is combined, type (tA)2I. A paracingulum may be defined by ornament alignment.
The size is intermediate.
Dimensions:
(10 specimens measured)
Holotype, length 63 µm, width 31 µm, (apical horn lost).
Paratype MPK 8647, length 74 µm, width 43 µm (apical horn lost).
Overall cyst length (apical horn lost), minimum 57 µm, mean 75 µm, maximum 92 µm. Overall cyst width, minimum 30 µm, mean 38 µm, maximum 43 µm.
Affinities/Comparison:
Batioladinium matyjae resembles Batioladinium daviesii Lentin and Vozzhennikova 1990 in shape, but the latter is randomly granular over the entire surface. It may resemble Gochteodinia mutabilis (Riley 1980) Davey 1982 which have lost their apices due to breakage. However, the archeopyle suture and the scar from the missing apex are different from the archeopyle suture in Batioladinium.
Holotype: Poulsen, 1996, pl.3, fig.7.
Recorded occurrences: Volgian to Early Valanginian in Britain and Ryazanian (Gochteodinia villosa Zone, Egmontodinium expiratum Subzone) in Denmark.
Age: Volgian–early Valanginian.
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Original description:
Diagnosis:
Elongate, ellipsoidal cyst with one apical horn and two short antapical horns. Autophragm only, ornamented with granules which increase in size and density toward the hypocyst, where spinules and tubercles are developed.
Paratabulation indicated by the archeopyle only. The cingulum, however, may be indicated.
Archeopyle combined, type (tA)2I.
Description:
An elongate species with overall length greater than twice the width. The apical horn is relatively short and merges into the main part of the cyst. The antapical horns are short and rounded.
The wall may be densely granular and pitted. The ornament becomes stronger towards the antapex, becoming coarsely granular with irregular spinules. The spinules may also be granular and sometimes particularly well developed on the antapical horns.
The archeopyle is combined, type (tA)2I. A paracingulum may be defined by ornament alignment.
The size is intermediate.
Dimensions:
(10 specimens measured)
Holotype, length 63 µm, width 31 µm, (apical horn lost).
Paratype MPK 8647, length 74 µm, width 43 µm (apical horn lost).
Overall cyst length (apical horn lost), minimum 57 µm, mean 75 µm, maximum 92 µm. Overall cyst width, minimum 30 µm, mean 38 µm, maximum 43 µm.
Affinities/Comparison:
Batioladinium matyjae resembles Batioladinium daviesii Lentin and Vozzhennikova 1990 in shape, but the latter is randomly granular over the entire surface. It may resemble Gochteodinia mutabilis (Riley 1980) Davey 1982 which have lost their apices due to breakage. However, the archeopyle suture and the scar from the missing apex are different from the archeopyle suture in Batioladinium.