†family Chiastozygaceae Rood et al. 1973 (haptophyte alga)

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

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Ecology: passively mobile planktonic "photoautotroph"

Distribution:

• Paleocene of Argentina (3 collections), Tanzania (1), United States (2: Missouri)

• Cretaceous of Argentina (8), 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: 181 collections including 384 occurrences

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