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Senegalinium dilwynense
Senegalinium? dilwynense (Cookson and Eisenack, 1965) Stover and Evitt, 1978
Originally Deflandrea, subsequently Alterbia (combination illegitimate), thirdly Senegalinium?. Stover and Evitt, 1978 considered this to be a "provisionally accepted species" of Senegalinium.
Holotype: Cookson and Eisenack, 1965, pl.18, figs.7-8
Locus typicus: Pebble Point Formation, SW. Victoria
Stratum typicum: Paleocene
Original description: Cookson and Eisenack, 1965, p.141: Deflandrea dilwynensis
Shell small, not much longer than broad. Epitheca longer and broader than hypotheca with straight or more usually convex sides which continue into the short, blunt, apical horn, the tip of which is usually concave. Hypotheca with slanting sides and two short, widely separated horns; the one on the left-hand side is clearly defined, short, rather broad and pointed, the right-hand one usually considerably reduced. The wall of the shell thin, faintly dotted, untabulated, and usually with fine longitudinal folds. Girdle prominent, rather broad and slightly helicoid, bordered by two folds indicated laterally by deep concavities. Longitudinal furrow relatively broad, outlined by folds which extend from the epitheca to the bases of the antapical horns.
Capsule relatively large, its outline following that of the shell which it almost fills. Archeopyle large, not always strongly outlined, trapezoidal, with either a straight or slightly convex distal edge which almost reaches the upper limit of the capsule.
Dimensions:
Holotype: overall length 74 µm; overall width 62 µm; capsule 45 x 47 µm. Range--overall length 56-76 µm; overall width 48-60 µm; capsule 42-57 µm.
Originally Deflandrea, subsequently Alterbia (combination illegitimate), thirdly Senegalinium?. Stover and Evitt, 1978 considered this to be a "provisionally accepted species" of Senegalinium.
Holotype: Cookson and Eisenack, 1965, pl.18, figs.7-8
Locus typicus: Pebble Point Formation, SW. Victoria
Stratum typicum: Paleocene
Original description: Cookson and Eisenack, 1965, p.141: Deflandrea dilwynensis
Shell small, not much longer than broad. Epitheca longer and broader than hypotheca with straight or more usually convex sides which continue into the short, blunt, apical horn, the tip of which is usually concave. Hypotheca with slanting sides and two short, widely separated horns; the one on the left-hand side is clearly defined, short, rather broad and pointed, the right-hand one usually considerably reduced. The wall of the shell thin, faintly dotted, untabulated, and usually with fine longitudinal folds. Girdle prominent, rather broad and slightly helicoid, bordered by two folds indicated laterally by deep concavities. Longitudinal furrow relatively broad, outlined by folds which extend from the epitheca to the bases of the antapical horns.
Capsule relatively large, its outline following that of the shell which it almost fills. Archeopyle large, not always strongly outlined, trapezoidal, with either a straight or slightly convex distal edge which almost reaches the upper limit of the capsule.
Dimensions:
Holotype: overall length 74 µm; overall width 62 µm; capsule 45 x 47 µm. Range--overall length 56-76 µm; overall width 48-60 µm; capsule 42-57 µm.