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Mendicodinium spinosum ssp. spinosum
From Fensome et al., 2019:
Mendicodinium spinosum subsp. spinosum Autonym. Holotype: Bucefalo Palliani et al., 1997a, pl.1, figs.7–8.
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Type locality: Colle d"Orlando section, Marne di Monte Serrone Formation, central Italy.
Stratigraphic horizon: Lower Toarcian, lower D. tenuicostatum Zone.
Original Diagnosis: Bucefalo Palliani et al. 1997a, p. 105-106
A subspecies of Mendicodinium spinosum which has a smooth autophragm and spines.
Original Description: Bucefalo Palliani et al. 1997a, p. 105-106
Ellipsoidal, proximochorate small dinoflagellate cysts which are markedly elongate equatorially. Autophragm relatively thick and smooth, surmounted by nontabular, solid, distally tapering spines. The hypocyst may be significantly larger than the epicyst.
Dimensions: Holotype: Length 26 µm, width 28 µm, spines 3 µm.
Overall cyst length: minimum 16 µm; mean 22.4 µm; maximum 26 µm. Overall cyst width: minimum 18 µm; mean 24.8 µm; maximum 28 µm. Length of spines: minimum 3 µm; mean 4.8 µm; maximum 5 µm (15 specimens measured).
Discussion: Bucefalo Palliani et al. 1997a, p. 105-106
This subspecies is distinguished from Mendicodinium spinosum subsp. perforatum Bucefalo Palliani, Riding et Torricelli, sp. nov. in having smooth autophragm and spines.
Mendicodinium spinosum subsp. spinosum Autonym. Holotype: Bucefalo Palliani et al., 1997a, pl.1, figs.7–8.
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Type locality: Colle d"Orlando section, Marne di Monte Serrone Formation, central Italy.
Stratigraphic horizon: Lower Toarcian, lower D. tenuicostatum Zone.
Original Diagnosis: Bucefalo Palliani et al. 1997a, p. 105-106
A subspecies of Mendicodinium spinosum which has a smooth autophragm and spines.
Original Description: Bucefalo Palliani et al. 1997a, p. 105-106
Ellipsoidal, proximochorate small dinoflagellate cysts which are markedly elongate equatorially. Autophragm relatively thick and smooth, surmounted by nontabular, solid, distally tapering spines. The hypocyst may be significantly larger than the epicyst.
Dimensions: Holotype: Length 26 µm, width 28 µm, spines 3 µm.
Overall cyst length: minimum 16 µm; mean 22.4 µm; maximum 26 µm. Overall cyst width: minimum 18 µm; mean 24.8 µm; maximum 28 µm. Length of spines: minimum 3 µm; mean 4.8 µm; maximum 5 µm (15 specimens measured).
Discussion: Bucefalo Palliani et al. 1997a, p. 105-106
This subspecies is distinguished from Mendicodinium spinosum subsp. perforatum Bucefalo Palliani, Riding et Torricelli, sp. nov. in having smooth autophragm and spines.