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Wuroia corrugata
Wuroia corrugata Marshall 1989
Holotype. Marshall 1989: Plate 8, figs. 3, 4.
Locus typicus: Gippsland Basin, Southeastern Australia
Stratum typicum: Late Cretaceous
Description. Marshall 1989, p. 51
Cysts spindle-shaped, widest equatorially, weakly tapering towards poles. Antapex rounded; apex truncated, often with an open, irregular margin. Cyst wall smooth, marked by scattered longitudinal folds, and often strongly crumpled; 0.1-0.4 µm thick near mid-length and thins towards poles.
Size. Cyst length 159(184)215 µm, width 26(45)69 µm; 12 specimens measured.
Comparison. This form resembles the Middle Jurassic species Wuroia capnosa Stover & Helby 1987, but lacks its finely granulate sculpture and the longitudinal folds are not as pronounced. Wuroiacapnosa also has more distinctly convex sides, which give the cyst a more robust outline than W. corrugata sp. nov.
Occurrence. Sunfish-l. 2482.7-2484.4 m
Holotype. Marshall 1989: Plate 8, figs. 3, 4.
Locus typicus: Gippsland Basin, Southeastern Australia
Stratum typicum: Late Cretaceous
Description. Marshall 1989, p. 51
Cysts spindle-shaped, widest equatorially, weakly tapering towards poles. Antapex rounded; apex truncated, often with an open, irregular margin. Cyst wall smooth, marked by scattered longitudinal folds, and often strongly crumpled; 0.1-0.4 µm thick near mid-length and thins towards poles.
Size. Cyst length 159(184)215 µm, width 26(45)69 µm; 12 specimens measured.
Comparison. This form resembles the Middle Jurassic species Wuroia capnosa Stover & Helby 1987, but lacks its finely granulate sculpture and the longitudinal folds are not as pronounced. Wuroiacapnosa also has more distinctly convex sides, which give the cyst a more robust outline than W. corrugata sp. nov.
Occurrence. Sunfish-l. 2482.7-2484.4 m