Camuralithus pelliculatus

de Kaenel & Villa, 1996 Sep 07, 2020

Set number: 276

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10µm

with diagonal crossbars.

Camuralithus pelliculatus, Late Oligocene, DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean

Set number: 277

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10µm

with axial crossbars

Camuralithus pelliculatus, Early Miocene, DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean

Final Epithet

Camuralithus pelliculatus de Kaenel & Villa, 1996

Basionym

Camuralithus pelliculatus de Kaenel & Villa, 1996

Description

Elliptical, deformed placolith arched longitudinally. An indistinct diagonal crossbar spans the central area. The proximal plate is strongly, but the diagonal cross is weakly birefringent [better seen at 45°] in polarised light.

Remarks

Camuralithus pelliculatus is distinguished from similarly arched Campylosphaera Kamptner (1963) species by being elliptical and having diagonal crossbars. Campylosphaera species are oblong in shape and have axial crossbars.

References

de Kaenel, E. & Villa, G., (1996): Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoecology from the Iberian Abyssal Plain. -Proceedings of the Ocean Drilling Program, Scientific Results. 149: 79-145.

Kamptner, E., (1963): Coccolithineen-Skelettreste aus Tiefseeablagerungen des Pazifischen Ozeans. - Annalen des Naturhistorischen Museums in Wien. 66: 139-204.