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<==o Cycadales (cycads; käpypalmut) |?-o †Ctenis Lindley & Hutton, 1834 emend. Harris, 1964 | |-- †C. sulcicaulis (Phillips, 1826) Ward, 1905 [Cycadites sulcicaulis Phillips, 1826] | |-- †C. minuta Florin, 1933 | `-- †C. latifolia (Brongniart) Seward [nomen dubium] |--o Cycadineae | `--o Cycadaceae | `-- Cycas ()? [94] `--o Zamiineae |--o Stangeriaceae | |--o Stangerioideae | | `-- Stangeria eriopus T.Moore | `--o Bowenioideae | `--o Bowenia | |-- †B. eocenica | |-- †B. papillosa | `--+-- B. spectabilis | `--+-- B. serrulata | `-- B. sp. `--o Zamiaceae (Zamia-käpypalmut) |--o Encephalartoideae | |--o Diooeae | | `-- Dioon ()? [11] | `--o Encephalarteae | |--o Encephalartinae | | `-- Encephalartos ()? [63] | `--o Macrozamiinae | |-- Macrozamia ()? [38] | `--o Lepidozamia | |-- L. hopei | `-- L. peroffskyana `--o Zamioideae |--o Ceratozamieae | `-- Ceratozamia ()? [18] `--o Zamieae |--o Microcycadinae | `-- Microcycas calocoma `--o Zamiinae |-- Zamia ()? [53] `--o Chigua |-- C. restrepoi `-- C. bernalii
Cleal, C. J. & Rees, P. M., 2003: The Middle Jurassic Flora from Stonesfield, Oxfordshire, UK.
–Palaeontology: Vol. 46, #4, pp. 739-801
Hill, K., 1998-: The Cycad Pages.
–iNet: Royal Botanic Gardens, Sydney: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/index.html
Hill, K., 1998-: The Cycad Pages - genus Lepidozamia.
–iNet: Royal Botanic Gardens, Sydney: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/lepkey.html
Hill, K., 1998-: The Cycad Pages - genus Stangeria
–iNet: Royal Botanic Gardens, Sydney: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/stakey.html
Hill, K., 1998-: The Cycad Pages - genus Bowenia
–iNet: Royal Botanic Gardens, Sydney: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/bowkey.html
Hill, K., 1998-: The Cycad Pages - genus Microcycas
–iNet: Royal Botanic Gardens, Sydney: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/mickey.html
Hill, K., 1998-: The Cycad Pages - genus Chigua
–iNet: Royal Botanic Gardens, Sydney: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/chikey.html
University of California, Museum of Paleontology, 2002-: Introduction to the Cycads - Legacy of the Mesozoic.
–iNet: http://www.ucmp.berkeley.edu/seedplants/cycadophyta/cycads.html
University of California, Museum of Paleontology, 2002-: Cycads: Fossil Record.
–iNet: http://www.ucmp.berkeley.edu/seedplants/cycadophyta/cycadfr.html
University of California, Museum of Paleontology, 2002-: The Stangeriaceae.
–iNet: http://www.ucmp.berkeley.edu/seedplants/cycadophyta/stangeriaceae.html
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