cycadeoid

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cycadeoid (plural cycadeoids)

1. (zoology) Any of the extinct plants of the order Bennettitales.

   Synonym: bennettitalean

   • 1993, Wilson Nichols Stewart, Gar W. Rothwell, Paleobotany and the Evolution of Plants, page 350:

     Like the cycads many cycadeoids have trunklike stems that are unbranched or sparsely branched and clothed in spirally arranged persistent leaf bases.