Keywords: Adoketophyton parvulum Strobilus.svg in Zhu X et al A new species of Adoketophyton from the Lower Devonian Pragian Posongchong Formation of Yunnan China Rev Palaeobot Palynol 2011 doi 10 1016/j revpalbo 2011 01 003 but not using their figure own Peter coxhead 2011-02-14 Cc-zero Illustrations of plant fossils |