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Deflandrea severnensis
Deflandrea severnensis Benson, 1976
Holotype: Benson, 1976, pl.10, figs.1-3
Locus typicus: Round Bay, Maryland, USA
Stratum typicum: Late Maastrichtian
Original diagnosis: Benson, 1976, p.195
Cavate cyst with reduced apical and antapical horns. Periphragm and endophragm thin, each less than 0.9 Ám in thickness. Periblast ornamented with varying numbers of short spines, frequently but not always intratabulary arranged reflecting a tabulation of 4", 3a, 7", ?c, ?5""", 2"""". Tabulation generally incomplete on individual specimens. Archeopyle intercalary (Type I/I). Cingulum equatorial, slightly levorotary. Sulcus strongly developed. Endoblast closely appressed to periblast.
Dimensions: Holotype: Periblast length 71 Ám, width 65 Ám; endoblast length 52 Ám, width 61 Ám; apical pericoel 9 Ám.
Holotype: Benson, 1976, pl.10, figs.1-3
Locus typicus: Round Bay, Maryland, USA
Stratum typicum: Late Maastrichtian
Original diagnosis: Benson, 1976, p.195
Cavate cyst with reduced apical and antapical horns. Periphragm and endophragm thin, each less than 0.9 Ám in thickness. Periblast ornamented with varying numbers of short spines, frequently but not always intratabulary arranged reflecting a tabulation of 4", 3a, 7", ?c, ?5""", 2"""". Tabulation generally incomplete on individual specimens. Archeopyle intercalary (Type I/I). Cingulum equatorial, slightly levorotary. Sulcus strongly developed. Endoblast closely appressed to periblast.
Dimensions: Holotype: Periblast length 71 Ám, width 65 Ám; endoblast length 52 Ám, width 61 Ám; apical pericoel 9 Ám.