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Palaeocystodinium lidiae
Palaeocystodinium lidiae (Górka, 1963, p.37–39, pl.5, fig.6) Davey, 1969b, p.12–13. Emendation: Davey, 1969b, p.12, as Palaeocystodinium lidiae.
Originally Leiofusa (an acritarch genus), subsequently (and now) Palaeocystodinium.
Holotype: Gorka, 1963, pl.5, fig.6
Locus typicus: Magnuszew, Poland
Stratum typicum: Maastrichtian
Original diagnosis: Davey, 1969, p.12
Fusiform cyst composed of two layers, the outer one being smooth or lightly punctate. Horns of approximately equal size and shorter than the length of the central body. The horns are sturdy, pointed distally, apparently flat, each possessing a longitudinal thickening or rib. They pass imperceptibly into the central body which is of elongate-ovoidal form and encloses an inner body of similar shape.
Archaeopyle intercalary, of rounded trapezoidal shape.
Tabulation rarely evident.
Dimenisons: Holotype: not known. Range of 3 specimens from type material: cyst length 150-210µm, width 42.5-52.5µm, length of horns 40-65µm. Range of Natal specimens: cyst length 169-197µm, width 37-50µm, central body length 72-117µm, length of horns 28-64µm. Number of specimens measured, 8.
Supplemental description: Davey, 1969, p.13
The cyst colour is consistently light to dark brown and appears to be a characteristic feature. The inner body is occasionally difficult to discern but never extends into the horns. Due to the large size of these cysts they are often distorted and the archaeopyle, although typically present, may be difficult to locate and may be mistaken for tear damage. An indistinct cingulum was present on one specimen but besides this single occurrence tabulation is apparently absent.
Originally Leiofusa (an acritarch genus), subsequently (and now) Palaeocystodinium.
Holotype: Gorka, 1963, pl.5, fig.6
Locus typicus: Magnuszew, Poland
Stratum typicum: Maastrichtian
Original diagnosis: Davey, 1969, p.12
Fusiform cyst composed of two layers, the outer one being smooth or lightly punctate. Horns of approximately equal size and shorter than the length of the central body. The horns are sturdy, pointed distally, apparently flat, each possessing a longitudinal thickening or rib. They pass imperceptibly into the central body which is of elongate-ovoidal form and encloses an inner body of similar shape.
Archaeopyle intercalary, of rounded trapezoidal shape.
Tabulation rarely evident.
Dimenisons: Holotype: not known. Range of 3 specimens from type material: cyst length 150-210µm, width 42.5-52.5µm, length of horns 40-65µm. Range of Natal specimens: cyst length 169-197µm, width 37-50µm, central body length 72-117µm, length of horns 28-64µm. Number of specimens measured, 8.
Supplemental description: Davey, 1969, p.13
The cyst colour is consistently light to dark brown and appears to be a characteristic feature. The inner body is occasionally difficult to discern but never extends into the horns. Due to the large size of these cysts they are often distorted and the archaeopyle, although typically present, may be difficult to locate and may be mistaken for tear damage. An indistinct cingulum was present on one specimen but besides this single occurrence tabulation is apparently absent.