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Deflandrea rectangularis ssp. samuelsonii
Deflandrea rectangularis ssp. samuelsonii (Kjellstr÷m, 1973) Lentin and Williams, 1975
Originally Deflandrea rectangularis var. samuelsonii, subsequently Deflandrea rectangularis ssp. samuelsonii, thirdly Amphidiadema rectangularis ssp. samuelsonii.
Taxonomic jr. synonym of Hystrichosphaeropsis quasicribrata (O. Wetzel, 1961) Gocht, 1976, according to Gocht, 1976.
Holotype: Kjellström, 1973, fig. 18
Locus typicus: H÷llviken Borehole No. 1, Scania, Sweden
Stratum typicum: Middle Maastrichtian
Original diagnosis: Kjellstr÷m, 1973, p.22
A variety of Deflandrea rectangularis with rectangular, granular theca. Spherical, psilate inner capsule extending to the lateral margins of the central part of the theca. Archaeopyle intercalary.
Dimensions: Length of theca: 140 µm; diameter of central capsule: 60 µm.
Affinities:
Kjellstr÷m, 1973, p.22: This variety differs from D. rectangularis by having a granular theca wall and a psilate central capsule.
Originally Deflandrea rectangularis var. samuelsonii, subsequently Deflandrea rectangularis ssp. samuelsonii, thirdly Amphidiadema rectangularis ssp. samuelsonii.
Taxonomic jr. synonym of Hystrichosphaeropsis quasicribrata (O. Wetzel, 1961) Gocht, 1976, according to Gocht, 1976.
Holotype: Kjellström, 1973, fig. 18
Locus typicus: H÷llviken Borehole No. 1, Scania, Sweden
Stratum typicum: Middle Maastrichtian
Original diagnosis: Kjellstr÷m, 1973, p.22
A variety of Deflandrea rectangularis with rectangular, granular theca. Spherical, psilate inner capsule extending to the lateral margins of the central part of the theca. Archaeopyle intercalary.
Dimensions: Length of theca: 140 µm; diameter of central capsule: 60 µm.
Affinities:
Kjellstr÷m, 1973, p.22: This variety differs from D. rectangularis by having a granular theca wall and a psilate central capsule.