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Thalassiphora flammea
Thalassiphora flammea Cookson and Eisenack, 1967
Originally (and now) Thalassiphora, subsequently Disphaeria. Yun, 1981 transferred this species to Disphaeria Cookson and Eisenack, 1960; however, Lentin and Williams, 1985 retained it in Thalassiphora.
Holotype: Cookson and Eisenack, 1967, pl.42, fig.1
Locus typicus: Victoria, W. Australia
Stratum typicum: Late Paleocene
Original diagnosis: Cookson and Eisenack, 1967, p.252
Shell approximately oval, rather thick-walled with a sub-apical archeopyle and a finely reticulate to more or less open lace-like wing.
Dimensions: Holotype: shell c. 82 µm long, c. 72 µm broad, archeopyle c. 30 x 24 µm; wing c. 50 µm wide.
Affinities:
Cookson and Eisenack, 1967, p.252: T. flammea agrees in general features with T. velata (Deflandre and Cookson, 1955) from two Western Australian Lower Tertiary deposits. However, in T. velata the winglike expansions are so faintly patterned as to give a general impression of smoothness and entirity, in contrast to the more coarsely dotted to finely open lacey appearance characteristic of T. flammea. T. flammea differs from the type species T. pelagica (Eisenack, 1954) from European Eocene deposits, in the absence of an antapical projection and type of wing structure.
Originally (and now) Thalassiphora, subsequently Disphaeria. Yun, 1981 transferred this species to Disphaeria Cookson and Eisenack, 1960; however, Lentin and Williams, 1985 retained it in Thalassiphora.
Holotype: Cookson and Eisenack, 1967, pl.42, fig.1
Locus typicus: Victoria, W. Australia
Stratum typicum: Late Paleocene
Original diagnosis: Cookson and Eisenack, 1967, p.252
Shell approximately oval, rather thick-walled with a sub-apical archeopyle and a finely reticulate to more or less open lace-like wing.
Dimensions: Holotype: shell c. 82 µm long, c. 72 µm broad, archeopyle c. 30 x 24 µm; wing c. 50 µm wide.
Affinities:
Cookson and Eisenack, 1967, p.252: T. flammea agrees in general features with T. velata (Deflandre and Cookson, 1955) from two Western Australian Lower Tertiary deposits. However, in T. velata the winglike expansions are so faintly patterned as to give a general impression of smoothness and entirity, in contrast to the more coarsely dotted to finely open lacey appearance characteristic of T. flammea. T. flammea differs from the type species T. pelagica (Eisenack, 1954) from European Eocene deposits, in the absence of an antapical projection and type of wing structure.