Thrinkophyton was a genus of Early Devonian land plant with branching axes. Known fossils are of Lochkovian to Pragian age ().
A cladogram published in 2004 by Crane et al. places Thrinkophyton in the core of a paraphyletic stem group of broadly defined "zosterophylls", basal to the lycopsids (living and extinct clubmosses and relatives).
Hao and Xue in 2013 listed the genus as a zosterophyll.