†Calculites obscurus Deflandre 1959 (haptophyte alga)
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Coccolithophyceae - Calyptrosphaeraceae
Alternative combination: Tetralithus obscurus
Belongs to Calculites according to P. R. Bown 1998
Sister taxa: Calculites additus, Calculites anfractus, Calculites ovalis, Calculites percernis
Ecology: passively mobile planktonic "photoautotroph"
Distribution:
• Cretaceous of Argentina (2 collections), France (1), United States (1: Georgia)
Total: 4 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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