Field Notebook: Russia 1975
Page 19
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Transcription
Ludlowian Dr. Cooley ates. Psilophyton bedelii are pupiolites Acambrogypteris Aldanophyton > M. Cambrian of Liberia superficially similar to poor Lycoptid atts. Walott's Margaretta. in Comb. of North Amer., a metaxyar from same. slate -conulative strata in North America Macropssil ord. of plants evolved in Darwntman.