Stein, W.E.; Mannolini, F.; Hernick, L.V.; Landing, E.; Berry, C.M.
taxonomy · range · morphology
Middle Devonian Wattieza crown material attached to Eospermatopteris trunks reconstructs a cladoxylopsid tree; the fern-like body plan is not evidence of crown-fern or horsetail ancestry.
The Pteridophyta atlas root retains a 385–0 Ma navigation envelope anchored by the Middle Devonian Wattieza–Eospermatopteris cladoxylopsid reconstruction; the fern-like body plan is not a crown-fern, crown-horsetail or direct-ancestor claim.
claim:taxon:pteridophyta:root-range-rc39