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Achomosphaera taiwaniana
Achomosphaera taiwaniana, Shaw Chenglong, 1999b, p. 176, figs.52-53.
Holotype: Shaw Chenglong, 1999b, figs.52-53.
Stratigraphic occurrence: Eocene (OK-1 well 1825m).
Age: Eocene.
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Original description: [Shaw Chenglong, 1999b, p. 176]:
Description:
Wall of central body thin, 1 μm thick, surface finely granulate (pseudoreticulate); closed gonal processes hollow, bifurcate to trifurcate with bifurcate extrimities.
Processes sometime branched, branching mainly confined to cingular zone.
Characteristically shaped precingular archeopyle free or present.
Dimensions:
Holotype: Diameter of central body 42-45 μm, processes 12 to 15 μm long (n=1).
Remarks:
The new species most closely resembles Achomosphaera sagena Davey & Williams in having a roughly similar outline; however, it differs from both in having finely granulate periphragm, and in having a thin cyst.
Holotype: Shaw Chenglong, 1999b, figs.52-53.
Stratigraphic occurrence: Eocene (OK-1 well 1825m).
Age: Eocene.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Shaw Chenglong, 1999b, p. 176]:
Description:
Wall of central body thin, 1 μm thick, surface finely granulate (pseudoreticulate); closed gonal processes hollow, bifurcate to trifurcate with bifurcate extrimities.
Processes sometime branched, branching mainly confined to cingular zone.
Characteristically shaped precingular archeopyle free or present.
Dimensions:
Holotype: Diameter of central body 42-45 μm, processes 12 to 15 μm long (n=1).
Remarks:
The new species most closely resembles Achomosphaera sagena Davey & Williams in having a roughly similar outline; however, it differs from both in having finely granulate periphragm, and in having a thin cyst.