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Stelladinium
From Williams et al., 2017:
[Stelladinium, Bradford, 1975, p. 3065-3066
Originally (and now) Stelladinium, subsequently Protoperidinium subgenus Archaeperidinium section Stelladinium (combination not validly published).
Harland and Reid in Harland et al. (1980, p.222,224) considered Stelladinium Bradford, 1975 to be not validly published, since it lacked a Latin diagnosis. As noted by Fensome et al. (1991, p.477), this was not necessary since a Latin diagnosis is not required for fossil cysts.
Type species: Stelladinium reidii, Bradford, 1975 (fig.2)]
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Original description: [Bradford, 1975]:
Diagnosis:
Proximate cysts with a pentagonal ambitus, which may be compressed dorsoventrally. Strongly developed horns occur at each of the five angles of the ambitus. Additional gonal processes are sometimes developed on the cingular zone. Archeopyle intercalary. A cingulum or sulcus may or may not be present, but tabulation is absent.
[Stelladinium, Bradford, 1975, p. 3065-3066
Originally (and now) Stelladinium, subsequently Protoperidinium subgenus Archaeperidinium section Stelladinium (combination not validly published).
Harland and Reid in Harland et al. (1980, p.222,224) considered Stelladinium Bradford, 1975 to be not validly published, since it lacked a Latin diagnosis. As noted by Fensome et al. (1991, p.477), this was not necessary since a Latin diagnosis is not required for fossil cysts.
Type species: Stelladinium reidii, Bradford, 1975 (fig.2)]
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Original description: [Bradford, 1975]:
Diagnosis:
Proximate cysts with a pentagonal ambitus, which may be compressed dorsoventrally. Strongly developed horns occur at each of the five angles of the ambitus. Additional gonal processes are sometimes developed on the cingular zone. Archeopyle intercalary. A cingulum or sulcus may or may not be present, but tabulation is absent.