It is more derived than the coexisting genus " Asteroxylon ", which has enations lacking vascules, in contrast to the true leaves of " Drepanophycus ".
2.
"Asteroxylon " differs from other similar Early Devonian lycopsids such as " Drepanophycus " and " Baragwanathia " in that the singular vascular leaf trace in these latter plants extends into the leaf.
3.
""'Drepanophycus " "'is a genus of extinct plants of the Division Lycopodiophyta of Early to Late Devonian age ( around ), found in Eastern Canada and Northeast USA, China, Russia, Egypt and various parts of Northern Europe and Britain.
4.
""'Drepanophycus spinaeformis " "'was first discovered in Scotland; fossils have since been recovered in Russia ( around Lake Shunet in the republic of Khakassia ), in the Yunnan province of the People's Republic of China, and in Egypt.
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