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Gonyaulacysta whatleyi
Gonyaulacysta whatleyi Sarjeant, 1972
Now Tubotuberella. Originally Gonyaulacysta, subsequently (and now) Tubotuberella.
Holotype: Sarjeant, 1972, pl.7, fig.1; text-fig.4; Jan du Chêne, 1986, pl.124, figs.10-11
Locus typicus: Upper Vardekloft Formation, Jameson Land, Greenland
Stratum typicum: Bathonian-Middle Callovian
Original diagnosis: Sarjeant, 1972, p.19-21
Cyst delicate and transparent, Ambitus a rounded and elongate pentagon. Endophragm and periphragm in general contact, but separating at either pole- at the apex is a "horn" or small apical pericoel, in the form of a rounded-tipped cone with thickened base, and at the antapex an antapical pericoel in the form a truncated cone, Tabulation marked by low ridges on the periphragm; 5", 1a, 6", 5 (or 6?)c, 6""", 1p, 1pv, ?1"""", Cingulum markedly laevorotatory, its two ends differing in anteroposterior position by almost 3 times its breadth. Archaeopyle precingular, reduced, formed by loss of plate 3".
Dimensions: Holotype: overall length 78.5 Ám, length of apical "horn" 8.5 Ám, length of antapical pericoel 8 Ám, length of endoblast 62 Ám, overall breadth 39 Ám.
Range of dimensions (4 specimens were measurable) overall length 66.5-88.5 Ám (mean 80.66 Ám), overall breadth c. 37-42 Ám (mean 39.66 Ám), length of endoblast 51-60.5 Ám (mean 57.16 Ám).
Now Tubotuberella. Originally Gonyaulacysta, subsequently (and now) Tubotuberella.
Holotype: Sarjeant, 1972, pl.7, fig.1; text-fig.4; Jan du Chêne, 1986, pl.124, figs.10-11
Locus typicus: Upper Vardekloft Formation, Jameson Land, Greenland
Stratum typicum: Bathonian-Middle Callovian
Original diagnosis: Sarjeant, 1972, p.19-21
Cyst delicate and transparent, Ambitus a rounded and elongate pentagon. Endophragm and periphragm in general contact, but separating at either pole- at the apex is a "horn" or small apical pericoel, in the form of a rounded-tipped cone with thickened base, and at the antapex an antapical pericoel in the form a truncated cone, Tabulation marked by low ridges on the periphragm; 5", 1a, 6", 5 (or 6?)c, 6""", 1p, 1pv, ?1"""", Cingulum markedly laevorotatory, its two ends differing in anteroposterior position by almost 3 times its breadth. Archaeopyle precingular, reduced, formed by loss of plate 3".
Dimensions: Holotype: overall length 78.5 Ám, length of apical "horn" 8.5 Ám, length of antapical pericoel 8 Ám, length of endoblast 62 Ám, overall breadth 39 Ám.
Range of dimensions (4 specimens were measurable) overall length 66.5-88.5 Ám (mean 80.66 Ám), overall breadth c. 37-42 Ám (mean 39.66 Ám), length of endoblast 51-60.5 Ám (mean 57.16 Ám).