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Kisselevia taiwaniana
Kisselevia taiwaniana Shaw Chenglong, 1999a, p.38-39, figs.8-10,19-21.
NOW Charlesdowniea. Originally Kisselevia, subsequently (and now) Charlesdowniea.
Holotype: Shaw Chenglong, 1999a, figs.8-10.
Age: Eocene.
Original description (Shaw Chenglong):
Kisselovia taiwaniana C. L. Shaw sp. nov.-
Holotype slide: OK-2 1700- (4); Figs. 8-10; film WA70-17, WA70-18, WA70-19 (Holotype at three focus levels); CPC Micropaleontology Lab.
Description: Cyst pentagonal with apical, two lateral and two relative reduced antapical horns and with endophragm, periphragm and ectophragm; intercalary Archeopyle; about µm wide. Pericoel totally enclosing endophargm. Ectocoel between periphragm and ectophragm. Parasuture with gonaltubiform processes. Processes arising from periphragm, hollow, connecting with pericoel., surface features with tubiform processes, the tubiforms about 9-19 µm long.
Dimensions:
Holotype – Overall length 112 µm long, breadth 125 µm wide, length of endocyst 88 µm long, breadth 894 µm wide, surface features with tubiform processes, the tubiform tubiforms about 10-13 µm.
Range – Overall length 92-112 µm long, breadth 105-143 µm long, length of endocyst 65-93 µm long, breadth 76-101 µm wide, length of processes 9-19 µm long (n=6).
Stratigraphic occurrence: Eocene (OK02 well, 1700m)
Derivation of name: The specific epithet, taiwaniana is derived from the name of Taiwan Island of the type locality.
Remarks: The new speices mst closely resemables Kisselovia coleothrypta (Willians & Downie) Lentin & Williams in having a roughly similar outline. However it differs from that in having two relative-reduced antapical horns, and in having a smaller size and longer tubiformed appendages.
NOW Charlesdowniea. Originally Kisselevia, subsequently (and now) Charlesdowniea.
Holotype: Shaw Chenglong, 1999a, figs.8-10.
Age: Eocene.
Original description (Shaw Chenglong):
Kisselovia taiwaniana C. L. Shaw sp. nov.-
Holotype slide: OK-2 1700- (4); Figs. 8-10; film WA70-17, WA70-18, WA70-19 (Holotype at three focus levels); CPC Micropaleontology Lab.
Description: Cyst pentagonal with apical, two lateral and two relative reduced antapical horns and with endophragm, periphragm and ectophragm; intercalary Archeopyle; about µm wide. Pericoel totally enclosing endophargm. Ectocoel between periphragm and ectophragm. Parasuture with gonaltubiform processes. Processes arising from periphragm, hollow, connecting with pericoel., surface features with tubiform processes, the tubiforms about 9-19 µm long.
Dimensions:
Holotype – Overall length 112 µm long, breadth 125 µm wide, length of endocyst 88 µm long, breadth 894 µm wide, surface features with tubiform processes, the tubiform tubiforms about 10-13 µm.
Range – Overall length 92-112 µm long, breadth 105-143 µm long, length of endocyst 65-93 µm long, breadth 76-101 µm wide, length of processes 9-19 µm long (n=6).
Stratigraphic occurrence: Eocene (OK02 well, 1700m)
Derivation of name: The specific epithet, taiwaniana is derived from the name of Taiwan Island of the type locality.
Remarks: The new speices mst closely resemables Kisselovia coleothrypta (Willians & Downie) Lentin & Williams in having a roughly similar outline. However it differs from that in having two relative-reduced antapical horns, and in having a smaller size and longer tubiformed appendages.