Back
Pseudospiniferites
From Williams et al., 2017:
[Pseudospiniferites, Lund, 2002, p. 87.
Type species: Pseudospiniferites manumii, Lund, 2002 (pl.1, figs.1-2)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Lund, 2002]:
Diagnosis:
Spiniferites-like dinoflagellate cysts with granulate to (micro)reticulate ornamented central body surfaces and tendency toward suture break-up around the primary single plate precingular archaeopyle.
Remarks:
With "tendancy to break up" means that this happens for a consistent portion, not necessarily all, of the individuals of the population of the actual species defined by other characters. Break-up around the archaeopyle may involve only a neighbouring precingular plate (Plate 1, Figure 5 and ?Plate 1, Figure 6) or sutures to additional plates, which in turn may result in the collapse of the epicyst (Plate 1, Figure 4). Break-up may involve the hypocyst as in the holotype (Plate 1, Figure 2) and the specimen shown in Plate 1, Figure 7. Due to occasionally heavy sculpture of the surface of the central body, the crests connecting the gonal spines may be overlooked, if they are not precisely focused on.
[Pseudospiniferites, Lund, 2002, p. 87.
Type species: Pseudospiniferites manumii, Lund, 2002 (pl.1, figs.1-2)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Lund, 2002]:
Diagnosis:
Spiniferites-like dinoflagellate cysts with granulate to (micro)reticulate ornamented central body surfaces and tendency toward suture break-up around the primary single plate precingular archaeopyle.
Remarks:
With "tendancy to break up" means that this happens for a consistent portion, not necessarily all, of the individuals of the population of the actual species defined by other characters. Break-up around the archaeopyle may involve only a neighbouring precingular plate (Plate 1, Figure 5 and ?Plate 1, Figure 6) or sutures to additional plates, which in turn may result in the collapse of the epicyst (Plate 1, Figure 4). Break-up may involve the hypocyst as in the holotype (Plate 1, Figure 2) and the specimen shown in Plate 1, Figure 7. Due to occasionally heavy sculpture of the surface of the central body, the crests connecting the gonal spines may be overlooked, if they are not precisely focused on.