†Placozygus sigmoides Romein 1979 (haptophyte alga)
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Coccolithophyceae - Eiffellithales - Chiastozygaceae
Belongs to Placozygus according to M. S. G. Estebenet et al. 2021
See also Perez Panera 2013
Sister taxon: Placozygus fibuliformis
Ecology: passively mobile planktonic "photoautotroph"
Distribution:
• Paleocene of Argentina (5 collections)
• Cretaceous of Argentina (2), France (1)
Total: 8 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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