Voltziopsida - Voltziales - Voltziaceae
Parent taxon: Voltziales according to A. B. Doweld 2001
See also Meyen 1984 and Retallack 1981
Sister taxa: Bartheliaceae, Emporiaceae, Moyliostrobus, Pseudovoltzia, Rotundolepis, Thucydiaceae, Ullmanniaceae, Utrechtiaceae
Subtaxa: Telemachus Voltzia
Distribution:
• Triassic of Argentina (1 collection), Austria (1), Chile (1), China (3), France (3), Germany (17), Hungary (1), Iran (1), Italy (18), Kyrgyzstan (1), New Zealand (1), the Russian Federation (1), Serbia and Montenegro (1), South Africa (18), Spain (1), Switzerland (2), Ukraine (1), the United Kingdom (2), United States (2: North Carolina)
• Permian of Brazil (3), China (1), Hungary (1), India (2), Kenya (1), Madagascar (4), Peru (1), the Russian Federation (2), United States (3: Arizona, Colorado, Kansas)
• Carboniferous of United States (1: Arizona)
Total: 95 collections including 117 occurrences