Article: Semblant land plants from the Middle Ordovician of the Prague Basin reinterpreted as animals
Two plant-like fossil are described from the middle Ordovician of the Prague Basin, Czech Republic. Both fossils bear a strong superficial resemblance to early land plants, but anatomical data indicate an affinity with animals. New evidence on internal structure demonstrates that the putative plant Boiophyton pragense Obrhel is a dendroid graptolite. The relationships of other heavily coalified, branched axes found in associated strata are more obscure. Scanning electron microscopy of surface features suggests that these plant-like remains are fossils of the collagenous stipes of gorgonacean octocorals.