Coccolithophyceae - Eiffellithales - Chiastozygaceae
Parent taxon: Eiffellithales according to P. R. Bown and J. R. Young 1997
Sister taxa: Eiffellithaceae, Rhagodiscaceae
Subtaxa: Ahmuellerella Amphizygus Archaeozygodiscus Bownia Bukrylithus Chiastozygus Clepsilithus Crepidolithus Diadorhombus Gorkaea Heteromarginatus Jakubowskia Loxolithus Misceomarginatus Monomarginatus Neocrepidolithus Placozygus Reinhardtites Retemediaformis Rhabdophidites Staurolithites Tranolithus Tubirhabdus Zeugrhabdotus
Ecology: passively mobile planktonic "photoautotroph"
Distribution:
• Paleocene of Argentina (7 collections), Tanzania (1), United States (2: Missouri)
• Cretaceous of Argentina (30), Austria (1), Belgium (1), Canada (7: Alberta), France (1), Germany (1), Israel (1), Romania (1), South Atlantic (1), Spain (9), Tanzania (5), United States (3: Alabama, Georgia)
• Jurassic of Canada (1: Alberta), Germany (8), Morocco (3), Saudi Arabia (3), Spain (120), Switzerland (1)
Total: 207 collections including 461 occurrences