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Dracodinium magnificum
From Fensome et al., 2019:
Dracodinium magnificum (Iakovleva and Kulkova, 2001, p.18, pl.6, figs.3–4; text-fig.11) Williams et al., 2015, p.304. Holotype: Iakovleva and Kulkova, 2001, pl.6, figs.3–4; text-fig.11. Originally Wetzeliella coronata subsp. magnifica, subsequently Wetzeliella articulata subsp. magnifica, thirdly (and now) Dracodinium magnificum. Age: Ypresian.
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Original description: [Iakovleva and Kulkova, 2001]:
Wetzeliella coronata subsp. magnifica subsp. nov.
Derivation of name.-Latin magnifica, superb. Holotype.-Slide No. 77.5-2 (Borehole No. 32, Pur Downstream Basin).
Description.-The cyst is cavate. The shape of the theca is pentagonal and rounded with reduced horns. The antapical horns are equal. The lateral horns are truncated at the end and are very reduced. Internal body is from oval to rounded, dark and with the granulate surface. Theca is large, slightly granulated, with outgrowths on the lateral sides and on the apical and antapical hornes. The outgrowths are very rare on the dorsal and ventral surfaces and are irregularly distributed. The transversal furrow is visible only on the lateral horns. The archaepyle is the same as at the type-species.
Holotype dimensions. - Length of theca: 124 µm; width of theca: 108 µm; length of internal body: 80 µm; width of internal body: 72 µm; length of outgrowths on the internal body: 20 µm.
Remarks. - This subspecies differs clearly from the type-species in its very rounded shape and the important reduction of apical, lateral and antapical horns. Wetzeliella coronata subsp. magnifica is characterised also by the more large periphragm on the lateral sides.
Ocurrence. - Nurolskaya Formation, Western Siberia, Lower Eocene.
Dracodinium magnificum (Iakovleva and Kulkova, 2001, p.18, pl.6, figs.3–4; text-fig.11) Williams et al., 2015, p.304. Holotype: Iakovleva and Kulkova, 2001, pl.6, figs.3–4; text-fig.11. Originally Wetzeliella coronata subsp. magnifica, subsequently Wetzeliella articulata subsp. magnifica, thirdly (and now) Dracodinium magnificum. Age: Ypresian.
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Original description: [Iakovleva and Kulkova, 2001]:
Wetzeliella coronata subsp. magnifica subsp. nov.
Derivation of name.-Latin magnifica, superb. Holotype.-Slide No. 77.5-2 (Borehole No. 32, Pur Downstream Basin).
Description.-The cyst is cavate. The shape of the theca is pentagonal and rounded with reduced horns. The antapical horns are equal. The lateral horns are truncated at the end and are very reduced. Internal body is from oval to rounded, dark and with the granulate surface. Theca is large, slightly granulated, with outgrowths on the lateral sides and on the apical and antapical hornes. The outgrowths are very rare on the dorsal and ventral surfaces and are irregularly distributed. The transversal furrow is visible only on the lateral horns. The archaepyle is the same as at the type-species.
Holotype dimensions. - Length of theca: 124 µm; width of theca: 108 µm; length of internal body: 80 µm; width of internal body: 72 µm; length of outgrowths on the internal body: 20 µm.
Remarks. - This subspecies differs clearly from the type-species in its very rounded shape and the important reduction of apical, lateral and antapical horns. Wetzeliella coronata subsp. magnifica is characterised also by the more large periphragm on the lateral sides.
Ocurrence. - Nurolskaya Formation, Western Siberia, Lower Eocene.