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Batiacasphaera agglutinata
Batiacasphaera agglutinata, (McIntyre and Brideaux, 1980), Jan du Chêne et al., 1985
Originally Kallosphaeridium?, subsequently (and nowl Batiacasphaera.
Holotype: McIntyre and Brideaux, 1980, pl.12, figs.7-9
Locus typicus: Martin Creek, District of Mackenzie, Canada
Stratum typicum: Valanginian
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Original description as Kallosphaeridium ?agglutinatum: [McIntyre and Brideaux, 1980, p. 25]:
Diagnosis:
Shape: Autocyst - Ambitus ovoid to subcircular; apical and antapical prominences absent. Compression variable. Surrounding flocculent material extending from 2-22 µm, typically 5-15 µm beyond autocyst. Pericoels - Absent.
Phragma: Autophragm - Less than 1.0 µm thick, surface sculpture of irregularly but densely spaced grana or, less commonly, short rugulate elements up to 1.0 µm high and 0.5 to 1.0 µm wide. Amorphous sheath (kalyptra) commonly with entrained mineral matter.
Paratabulation: Autocyst - Epiparatabulation of 4", 6" denoted in the vicinity of the archeopyle by archeopyle outline and development in places of accessory archeopyle sutures. Autocingulum - Not indicated. Autosulcus - Not indicated.
Archeopyle: Apical, Type A?a(1"-4"). Operculum simple, free or partially attached on some specimens along the posterior parasuture of paraplate 1".
Dimensions:
Autocyst diameter (maximum) 55-90 µm width 56-83 µm.
Affinities:
Kallosphaeridium ?agglutinatum differs from K. ?granulatum (Norvick in Norvick and Burger) Stover and Evitt, 1978 in being larger and possessing a dense granulate to microrugulate ornament compared to the granulate, baculate or clavate ornament of the latter.
Originally Kallosphaeridium?, subsequently (and nowl Batiacasphaera.
Holotype: McIntyre and Brideaux, 1980, pl.12, figs.7-9
Locus typicus: Martin Creek, District of Mackenzie, Canada
Stratum typicum: Valanginian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description as Kallosphaeridium ?agglutinatum: [McIntyre and Brideaux, 1980, p. 25]:
Diagnosis:
Shape: Autocyst - Ambitus ovoid to subcircular; apical and antapical prominences absent. Compression variable. Surrounding flocculent material extending from 2-22 µm, typically 5-15 µm beyond autocyst. Pericoels - Absent.
Phragma: Autophragm - Less than 1.0 µm thick, surface sculpture of irregularly but densely spaced grana or, less commonly, short rugulate elements up to 1.0 µm high and 0.5 to 1.0 µm wide. Amorphous sheath (kalyptra) commonly with entrained mineral matter.
Paratabulation: Autocyst - Epiparatabulation of 4", 6" denoted in the vicinity of the archeopyle by archeopyle outline and development in places of accessory archeopyle sutures. Autocingulum - Not indicated. Autosulcus - Not indicated.
Archeopyle: Apical, Type A?a(1"-4"). Operculum simple, free or partially attached on some specimens along the posterior parasuture of paraplate 1".
Dimensions:
Autocyst diameter (maximum) 55-90 µm width 56-83 µm.
Affinities:
Kallosphaeridium ?agglutinatum differs from K. ?granulatum (Norvick in Norvick and Burger) Stover and Evitt, 1978 in being larger and possessing a dense granulate to microrugulate ornament compared to the granulate, baculate or clavate ornament of the latter.