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There are currently 13 accepted species of Psilophtyon. P. dawsonii, P. forbesii, P. coniculum, P. charientos, P. crenulatum, P. microspinosum, P. kraeuselii, P. Szaferi, P. dapsile, P. genseliae, P. parvulum, P. primitivum and P. princeps. P. princeps in the holotype for the genus, although it is the only Psilophyton w/ peg-like enations. The distribution of Psilophyton is world wide(US, Canada, Belgium, Czech Rep., Poland, China) but they are mostly found in Northern Maine (Trout Valley, Baxter park), Gaspe peninsulae and ontario. —Preceding unsigned comment added by 66.26.83.48 (talk) 05:03, 1 November 2007 (UTC)
- What is your source? Incidentally, the distribution is not global; all known sites are in the Northern Hemisphere, which gives Psilophyton a Laurasian distribution. It has yet to be found in Gondwana. --EncycloPetey 05:05, 1 November 2007 (UTC)
- I have managed to find sources for all of these names, so the list appears to be correct. There are some other names around which are not clear to me:
- P. burnotense – was apparently originally Lepidodendron burnotense Gilkinet and was transferred to Psilophyton burnotense (Gilkinet) Kräusel & Weyland, but it's not clear what its current status is.
- P. elegans – was an original Dawson species (?); not clear what its current status is.
- P. glabrum – was an original Dawson species (?); not clear what its current status is.
- P. salairicus – name is on the web in several places, but no other information known to me.
- P. vaunxeni – name is on the web in several places, but no other information known to me.
- If anyone can clarify any of these names, it would be useful. Peter coxhead (talk) 10:28, 4 April 2011 (UTC)
- I have managed to find sources for all of these names, so the list appears to be correct. There are some other names around which are not clear to me: