BERRY: FERN GENUS CLATHROPTERIS 
282 
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Fic. 1. Specimen of Clathropteris platyphylia from Triassic of Virginia, one half 
natural size. : 
palmately arranged pinnae on the right of the specimen figured 
These are lan- 
(Fic. 1) as representing such primary pinnae. 
ceolate in form, show a maximum width of 5 cm. at about one 
