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Apteodinium australiense
Apteodinium australiense, (Deflandre and Cookson, 1955), Williams, 1978
Originally Gymnodinium, subsequently Scriniodinium, thirdly (and now) Apteodinium; see also Emslandia (combination not validly published).
Tax. sr. synonym of Emslandia crassimurata Benedek and Sarjeant, 1981, according to Lucas-Clark, 1987.
Holotype: Deflandre and Cookson, 1955, pl.5, fig.1.
Locus typicus: Victoria, Australia
Stratum typicum: Middle Miocene
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Original description as Gymnodinium australiense: [Deflandre and Cookson, 1955, p. 248]:
Description:
Cell globular, divided into two approximately equal parts by a narrow, rather shallow, strongly helicoid girdle. A longitudinal furrow is visible on the hypotheca. The epitheca is surrounded by a short truncate process, the centre of which is frequently depressed. Usually the base of the process is distinctly mammilate. Hypotheca widely rounded; both parts or only the epitheca are bell-shaped. The membrane is finely punctate and sometimes indistinct lines suggestive of plates are apparent. The cell is generally encysted with a more or less quadrangular opening on the dorsal face of the epitheca.
Dimensions:
Total length 102-105 µm, breadth 87-105 µm
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Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Apteodinium australiense (Deflandre and Cookson, 1955) Williams, 1978 has the thick, complex wall characteristic of Apteodinium. Tabulation is often indistinctly defined and the cingulum is generally well developed..
Size: length 102-105 µm, width 87-105 µm.
Originally Gymnodinium, subsequently Scriniodinium, thirdly (and now) Apteodinium; see also Emslandia (combination not validly published).
Tax. sr. synonym of Emslandia crassimurata Benedek and Sarjeant, 1981, according to Lucas-Clark, 1987.
Holotype: Deflandre and Cookson, 1955, pl.5, fig.1.
Locus typicus: Victoria, Australia
Stratum typicum: Middle Miocene
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description as Gymnodinium australiense: [Deflandre and Cookson, 1955, p. 248]:
Description:
Cell globular, divided into two approximately equal parts by a narrow, rather shallow, strongly helicoid girdle. A longitudinal furrow is visible on the hypotheca. The epitheca is surrounded by a short truncate process, the centre of which is frequently depressed. Usually the base of the process is distinctly mammilate. Hypotheca widely rounded; both parts or only the epitheca are bell-shaped. The membrane is finely punctate and sometimes indistinct lines suggestive of plates are apparent. The cell is generally encysted with a more or less quadrangular opening on the dorsal face of the epitheca.
Dimensions:
Total length 102-105 µm, breadth 87-105 µm
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Apteodinium australiense (Deflandre and Cookson, 1955) Williams, 1978 has the thick, complex wall characteristic of Apteodinium. Tabulation is often indistinctly defined and the cingulum is generally well developed..
Size: length 102-105 µm, width 87-105 µm.