Cycadopsida - Cycadales - Nilssoniaceae
Parent taxon: Nilssoniaceae according to W. B. K. Holmes 1982
See also Andrews 1970, Chandra and Tewari 1991, Lakhanpal et al. 1976 and Nielsen 2005
Sister taxon: Nilssoniocladus
Subtaxa: Pseudoctenis azcaratei Pseudoctenis ballii Pseudoctenis eathiensis Pseudoctenis fissa Pseudoctenis fragilis Pseudoctenis grossa
Type: Pseudoctenis eathiensis
Distribution:
• Cretaceous of Antarctica (1 collection), Canada (8: British Columbia), Greenland (2), India (4), South Africa (4), United States (6: Wyoming)
• Jurassic to Cretaceous of Canada (1: British Columbia)
• Jurassic of Antarctica (2), Argentina (1), China (4), France (2), Georgia (6), Greenland (2), India (1), Iran (2), Japan (7), Kazakhstan (3), Mexico (4), Norway (1), Romania (6), the Russian Federation (10), Tajikistan (1), Ukraine (1), the United Kingdom (31), Uzbekistan (1)
• Triassic to Jurassic of Sweden (1)
• Triassic of Argentina (4), Australia (3), Chile (2), China (3), Germany (1), Greenland (8), Mongolia (1), the Russian Federation (3), South Africa (21), Sweden (1), Tajikistan (3), United States (4: New Mexico, North Carolina)
• Permian to Triassic of India (1)
• Permian of Australia (4), India (9), the United Kingdom (1)
Total: 181 collections including 221 occurrences
Specimen images are retrieved through the ePANDDA API.
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