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Mendicodinium microscabratum
From Fensome et al., 2019:
Mendicodinium microscabratum Bucefalo Palliani et al., 1997a, p.109, pl.2, figs.10–12; pl.3, figs.8–11; text-fig.2. Holotype: Bucefalo Palliani et al., 1997a, pl.2, fig.10. Age: early Toarcian.
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Type locality: Fonte Cerro section, Marne di Monte Serrone Formation, central Italy.
Stratigraphic horizon: Lower Toarcian, D. tenuicostatum Zone.
Original Diagnosis: Bucefalo Palliani et al. 1997a, p. 109
Ellipsoidal, proximate, small dinoflagellate cysts, with autophragm smooth to microscabrate.
Original Description: Bucefalo Palliani et al. 1997a, p. 109
Ellipsoidal, proximate, small dinoflagellate cysts which are markedly elongate equatorially. Autophragm smooth to microscabrate. The elements of ornamentation are densely arranged, nontabular and are about 0.2 µm in diameter (Plate III, 8). The cyst is characterized by very dense internal sculpture (Plate III, 10, 11). The hypocyst may be significantly larger than the epicyst.
Dimensions: Holotype: Length 20 µm, width 34 µm.
Overall cyst length: minimum 15 µm; mean 23.8 µm; maximum 33 µm. Overall cyst width: minimum 22 µm; mean 30 µm; maximum 38 µm (25 specimens measured).
Discussion: Bucefalo Palliani et al. 1997a, p. 109
Mendicodinium microscabratum is most similar in morphology to M. granulatum Kumar, 1986 and M. umbriense. However, Mendicodinium granulatum is significantly larger in overall size than M. microscabratum and the elements of the ornamentation are also much larger than their counterparts in M. microscabratum. Furthermore, Mendicodinium microscabratum does not exhibit the large granules characteristic of M. umbriense. Mendicodinium sp. 1 in Baldanza et al. (1995) is considered to be M. microscabratum.
Mendicodinium microscabratum Bucefalo Palliani et al., 1997a, p.109, pl.2, figs.10–12; pl.3, figs.8–11; text-fig.2. Holotype: Bucefalo Palliani et al., 1997a, pl.2, fig.10. Age: early Toarcian.
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Type locality: Fonte Cerro section, Marne di Monte Serrone Formation, central Italy.
Stratigraphic horizon: Lower Toarcian, D. tenuicostatum Zone.
Original Diagnosis: Bucefalo Palliani et al. 1997a, p. 109
Ellipsoidal, proximate, small dinoflagellate cysts, with autophragm smooth to microscabrate.
Original Description: Bucefalo Palliani et al. 1997a, p. 109
Ellipsoidal, proximate, small dinoflagellate cysts which are markedly elongate equatorially. Autophragm smooth to microscabrate. The elements of ornamentation are densely arranged, nontabular and are about 0.2 µm in diameter (Plate III, 8). The cyst is characterized by very dense internal sculpture (Plate III, 10, 11). The hypocyst may be significantly larger than the epicyst.
Dimensions: Holotype: Length 20 µm, width 34 µm.
Overall cyst length: minimum 15 µm; mean 23.8 µm; maximum 33 µm. Overall cyst width: minimum 22 µm; mean 30 µm; maximum 38 µm (25 specimens measured).
Discussion: Bucefalo Palliani et al. 1997a, p. 109
Mendicodinium microscabratum is most similar in morphology to M. granulatum Kumar, 1986 and M. umbriense. However, Mendicodinium granulatum is significantly larger in overall size than M. microscabratum and the elements of the ornamentation are also much larger than their counterparts in M. microscabratum. Furthermore, Mendicodinium microscabratum does not exhibit the large granules characteristic of M. umbriense. Mendicodinium sp. 1 in Baldanza et al. (1995) is considered to be M. microscabratum.