Archaeopteris was a very different beast from Wattieza. It was conifer-like, had leafy twigs, a large root systems and long-lived branches that grew from the side of the trunk.
Confusing for a layperson as study shows the fern/spore Archaeopteris but then the “woody” Archaeopteris tree which is conifer like.
http://www.abc.net.au/science/news/stories/2007/1901623.htm
ABC’s science. ;)
Treebeard?