Zeugrhabdotus embergeri
Set number: 1851
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10µm
In the mobile mount.
Set number: 1850
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10µm
Set number: 1852
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10µm
Set number: 1853
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10µm
Set number: 1854
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10µm
Discolithus embergeri Noël, 1959
Optical Properties: The outer wall shows length-fast (-) elongation, while the proto-inner wall and distal process show length-slow (+) elongation in the side view.
Large species of Zeugrhabdotus exceeding 8.0 μm are characterised by a wall visible distally and a central area spanned by a transverse bar that supports a massive distal process. When observed in a mobile mount, the side view shows that the distally widening outer wall obscures the distally tapering proximal proto-inner wall. In contrast, the genus Gorkaea features a distally gently widening, fully developed inner wall that partly obscures the distally tapering, very narrow outer wall.
Noël, D. 1959. Étude de coccolithes du Jurassique et du Crétacé inférieur. Publications du Service de la Carte Géologique de l'Algérie Bulletin. 20: 155-196.
Perch-Nielsen, K. 1984. Validation of new combinations. INA Newsletter. 6(1): 42-46.
Holotype
Discolithus embergeri
Noël, 1959
Tithonian / Valanginian
Kef Talrempt, Ampère - Batna, Algeria.