Belongs within: Tracheophyta. The Trimerophytina are a group of vascular plants known from the Early (Pragian) to the lowermost Middle Devonian. They bore sporangia in pairs that are commonly preserved twisted around each other (Gerrienne 1997). Before the word for world was forest Published 10 July 2009 …though to be perfectly honest, I’ve never read… Continue reading Trimerophytina