A partially silicified stem fragment of an arborescent lycopsid, tentatively identified as Leptophloeum rhombicum, is documented from peritidal carbonates in the Palliser Formation (Upper Devonian; Famennian) of southwestern Alberta. An unlikely inhabitant of these tidal flats, the log must have rafted in from a relatively nearby land area. The most probable candidate sources are either the Kootenay island arc to the paleo-northwest or hypothetical Montania to the southwest. The specimen is evidence that either or both these equatorial areas had a humid paleoclimate and vegetated coastal marshes and swamps.
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- Received July 4, 2016.
- Accepted September 17, 2016.
- Published on the NRC Research Press Web site at http://cjes.nrc.ca on September 27, 2016.
- Published by NRC Research Press