Psaronius

noun Psa·ro·ni·us \səˈrōnēəs\

Definition of Psaronius

  1. :  a genus of fossil ferns based on tree fern trunks with a vascular system that is a polycyclic dictyostele — see starling stone

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Origin and Etymology of psaronius

New Latin, from Latin, a precious stone; from its speckled appearance when polished


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