It has been several years since the implementation of your diagnostic matrix to aid in categorizing Osmundaceous specimens. Is there a specific name used for this tool? Have there been alterations to it since its creation? Has the scientific community adopted and standardized this diagnostic tool? My final question concerns use of the tool when facing a novel species for which new and different ch...

In addition to the structural features used in this study for classification, when pertaining to helical or spiral phyllotaxis of Osmundalean leaf traces, have parastichy numbers been considered as an additional classification standard?

Itopsidema vancleavei is from the Upper Triassic Chinle Formation in Petrified Forest National Park, Arizona, not from the Early-Middle Triassic Moenkopi Formation. How does this geochronological extension change the details of this study? I would think barely if at all.