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Trichodinium castanea ssp. castanea
Trichodinium castanea ssp. castanea
Autonym.
Holotype: Deflandre, 1935, pl.6, fig.8; Deflandre 1936b, pl.6, fig.1; Jan du Chêne et al., 1986a, pl.122, figs.9–10.
Age: Erratic, ?Senonian
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Trichodinium castanea Deflandre, 1935 ex Clarke and Verdier, 1967. Trichodinium castanea has a spherical to ovoidal outline, small apical horn, can be as a bunch of spines, and numerous small, generally bifid spines, which are parasutural, particularly on the cingulum, and intratabular. Size: diameter 45-65 µm.
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Deflandre 1935, p. 229, PL.6, fig.8
Palaeoperidinium castanea
Diagnosis: The theca is spherical, sometimes spheroidal, slightly flattened or, on the contrary, a little ellipsoidal; it is divided in two equal parts by the transverse furrow, which is helicoidal and laevorotatory. The longitudinal furrow, which is perpendicular to it, is larger on the hypotheca than on the epitheca, but it seems to extend equally on both. At the apex, there is a bunch of strong, slightly divergent spines. The entire theca is covered with spines which, depending on the specimen, appear to be more or less dense. Generally, these spines are more numerous and stronger where the plate sutures would be located, and of which traces are found.
Dimensions: diameter generally about 45 µm, range 45-65 µm.
Autonym.
Holotype: Deflandre, 1935, pl.6, fig.8; Deflandre 1936b, pl.6, fig.1; Jan du Chêne et al., 1986a, pl.122, figs.9–10.
Age: Erratic, ?Senonian
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Trichodinium castanea Deflandre, 1935 ex Clarke and Verdier, 1967. Trichodinium castanea has a spherical to ovoidal outline, small apical horn, can be as a bunch of spines, and numerous small, generally bifid spines, which are parasutural, particularly on the cingulum, and intratabular. Size: diameter 45-65 µm.
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Deflandre 1935, p. 229, PL.6, fig.8
Palaeoperidinium castanea
Diagnosis: The theca is spherical, sometimes spheroidal, slightly flattened or, on the contrary, a little ellipsoidal; it is divided in two equal parts by the transverse furrow, which is helicoidal and laevorotatory. The longitudinal furrow, which is perpendicular to it, is larger on the hypotheca than on the epitheca, but it seems to extend equally on both. At the apex, there is a bunch of strong, slightly divergent spines. The entire theca is covered with spines which, depending on the specimen, appear to be more or less dense. Generally, these spines are more numerous and stronger where the plate sutures would be located, and of which traces are found.
Dimensions: diameter generally about 45 µm, range 45-65 µm.