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Lycopodites Sp. Or Lepidodendron Or Sometin Else?


Plantguy

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Hey Gang, acquired some Alabama USA carboniferous material recently and have this lovely specimen...Seen Ric's gorgeous material in his posts and others about Alabama and am thrilled to have this addition from that part of the country. Have some others to show down the road so if the job dont kill me maybe I'll get around to postin for help with those as well if I find some time....

A couple shots for you of this guy....same specimen--orientation different (diff colors also--I know--still have the edge here on poor lighting/photos...ugh...indoor and natural light shots)....seen some pictures taken recently from the new wife's galaxy phone--she wont miss it, will she, borrow it, hmmm?

Anyways, still going thru the labels and trying to match this up with formational names cards and doing research...It's labeled as Lycopodites sp...but in some of my surfing on the web I've run across a Lepidodendron lycopodiodes?? in the literature...Stems on this guy run 3-5mm across. Are we getting back into the issue with assigning different parts of the same plant with differing genus and species names...Any one out there want to share thoughts--I havent found the genus species descriptions yet.

Hope the fossil hunting gods have been good to you all!

Thanks, Chris

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Wow, That's a beauty Chris.

Love the detail on that. :wub:

Unfortunately, I do not know enough about these plants to speak intelligently about what's what with them. :blush:

Thanks for posting this.

Regards,

    Tim    -  VETERAN SHALE SPLITTER

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Chris... No wonder your buzzing with that specimen its probably one of the best examples I have seen... Its great to see the arrangment of the twigs over such a large area which is often lacking in nodular specimens...I think your right about different sized leafy shoots...also perhaps the stage of growth when fossilised and other small factors leading to some confusion...

Cheers Steve... And Welcome if your a New Member... :)

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Hey Gang, acquired some Alabama USA carboniferous material recently and have this lovely specimen...

This is a stunning specimen, Chris :wub:

It is rather like its modern analog:

post-423-0-20555100-1344212058_thumb.jpg

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Thanks all for the comments and feedback..really appreciate it...does make me stare at the specimen alot looking at the detail...wife thinks I'm nuts, but I'm am a happy nut!... :rofl:.

I'm still trying to dig for more details but these photos look like we are in the ball park. Will shoot a note to the authors for their input on distinguishing features..

ATLAS OF UNION CHAPEL MINE FOSSIL PLANTS

DAVID L. DILCHER and TERRY A. LOTT

Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611-7800, USA

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Plate 120. Figure 1-4:

Lepidodendron lycopodioides Fig. 1 and 2, UCM-P 221, Fig. 2 is an enlargement of Fig.

1; Fig. 3, UCM-P 163; Fig. 4, UCM-P 224. Terminal branches of a

Lepidodendron tree showing their elongate

nature, dichotomous branching and attached leaves.

Regards, Chris

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  • 2 years later...

Reviving an old thread to say "Wow, those are nice fossils, Chris."

Very good examples. I just purchased some similar Alabama lepidodendron branches recently but mine were smaller.

Also, a question: Are these the small branches at the tips of the big lepidodendron trees or branches of a smaller ground lycopod?

Or is the same form genus used for both and there is no good way to tell the difference?

Somewhere, something incredible is waiting to be known.–Carl Sagan

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Reviving an old thread to say "Wow, those are nice fossils, Chris."

Very good examples. I just purchased some similar Alabama lepidodendron branches recently but mine were smaller.

Also, a question: Are these the small branches at the tips of the big lepidodendron trees or branches of a smaller ground lycopod?

Or is the same form genus used for both and there is no good way to tell the difference?

Hey Stocksdale. Yes, I like that specimen alot--I was very fortunate to have acquired it. Curiously, in the past year one of the other members had pointed that photos of it had been included in another fossil plant website as an example of the Lycopodites Genus. I guess they liked it!

As for distinguishing these two. I tried to get that answer thru the Univ of FL a couple years back and never did get a confirmation and didnt pursue it further. At that time (and maybe Jack can add to this if he sees this thread) I was told the following: Langford 1958 and Lesquereux 1879-1884 note that for Lepidodendron slender twigs with leaves, the leaves have a midrib. For Lycopodites, the slender stems with tiny leaves, the leaves lack a midrib. In Taylor et al. 2009, they do not talk about the differences of the leaves, but only note that you can tell that it is Lycopodites by the scattered sporangia along the stem in association with the leaves, but most Lycopodites consist of only vegetative remains. It may be that the only way to distinguish the two is by epidermal comparison such as stomata type and distribution.

So, the specimen I have has such thin stems and leaves that it seems to fit the general Lycopodites description--whether it is still considered a possibly herbaceous plant form I dont know and unfortunately I cant identify any sporangia. It is definitely markedly smaller in size than the other Lepidodendron stems/leaves with midribs that I have. Here are a few examples of larger Lepidodendron leaves that I have from West Virginia.

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Thanks for looking and comments. I wish I had more for you. Someday I'd like to plan a trip up to Alabama to collect as there is some spectacular material to be had!

Regards, Chris

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Thanks for the info.

I recently bought a few smaller examples from Alabama. Here's one of them.

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There's also a long lepidodendron leaf (cyperites) among them.
Edited by Stocksdale

Somewhere, something incredible is waiting to be known.–Carl Sagan

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Thanks for the info.
I recently bought a few smaller examples from Alabama. Here's one of them.
There's also a long lepidodendron leaf (cyperites) among them.

Very nice example. Great acquistion! I'm wondering about the Cyperites ID....Any chance it could be a really nice partial bract Lepidostobophyllum...yours appears to have a number of midveins and seems to be tapering a little near both ends?

For comparison: leaves and a bract that I also have from Alabama.

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Regards, Chris

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As someone who as added to the confusion. I would like to offer the latest thinking (DiMichele, personal communication) on the use of the genus name Lycopodites. This form is now considered the terminal tips of Lepidodendron branches. There is no convincing evidence of small herbaceous lycopsids in the Late Carboniferous. And this is as Chris has noted, they always seem to be missing any fertile structures. Modern herbaceous clubmoss of near identical appearance to the fossil Lycopodites often express fertile structures through the growing season. For now Lycopodites is a convenient name for lepidodendron branch tips. That said, we are always a single fossil away from that changing.

Hope this helps,

Jack

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As someone who as added to the confusion. I would like to offer the latest thinking (DiMichele, personal communication) on the use of the genus name Lycopodites. This form is now considered the terminal tips of Lepidodendron branches. There is no convincing evidence of small herbaceous lycopsids in the Late Carboniferous. And this is as Chris has noted, they always seem to be missing any fertile structures. Modern herbaceous clubmoss of near identical appearance to the fossil Lycopodites often express fertile structures through the growing season. For now Lycopodites is a convenient name for lepidodendron branch tips. That said, we are always a single fossil away from that changing.

Hope this helps,

Jack

Yep Jack, it does! Thanks for latest! Regards, Chris

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  • 1 month later...

I couldn't resist buying one more Lepidodendron branch from the area near Union Chapel Mine in Alabama. It has a nice transition from the more typical lepidodendron leaf cushions to the Lycopodite-type leaves. I plan to use it to create an illustration of the canopy branches.

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Here's a detail from the lower part clearly showing the leaf cushions. Possibly Lepidodendron obovatum?

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And some more detail

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Edited by Stocksdale

Somewhere, something incredible is waiting to be known.–Carl Sagan

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And some more details from the specimen.

post-10955-0-11431000-1423369254_thumb.jpg post-10955-0-79796500-1423369401_thumb.jpg

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Edited by Stocksdale

Somewhere, something incredible is waiting to be known.–Carl Sagan

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And some more details from the specimen.

attachicon.gifdetail2.jpg attachicon.gifdetail3.jpg

attachicon.gifdetail4.jpg

I saw that specimen too and was intrigued and considered bidding against you but spent the money on a Vert book to help me with all this Florida stuff I cant seem to figure out. Very nice acquisition! Really stunning specimen. Congrats.

Regards, Chris

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I saw that specimen too and was intrigued and considered bidding against you but spent the money on a Vert book to help me with all this Florida stuff I cant seem to figure out. Very nice acquisition! Really stunning specimen. Congrats.

Regards, Chris

Thank you :)

Somewhere, something incredible is waiting to be known.–Carl Sagan

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I think this specimen of Jack Wittry's that Jack Wittry photographed for the Smithsonian Mazon Creek site looks remarkably similar to the ones from Alabama.

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Edited by Stocksdale

Somewhere, something incredible is waiting to be known.–Carl Sagan

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A quick clarification, all the specimens on the Smithsonian's web site are the best examples of the those housed in the Smithsonian's collection. Most were found by John McLuckie in the 1950's. He was one of the dragline shovel operators for the Peabody Coal Company. A dream job for fossil collectors.

Jack

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Thanks Jack.

I thought I had a small example from Mazon Creek that I had bought somewhere that I hadnt photographed before. I ran across it over the weekend so here you go. The nodule is 7.5cm long and specimen 5.5 cm.

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Regards, Chris

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Here's one that the Birmingham Paleontological Society had posted on their site. It is probably from the same Union Chapel location that mine and Chris' came from. It would appear to be the same species showing much more of the thicker branch. Pretty clear evidence of it being part of a tree.

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Edited by Stocksdale
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Somewhere, something incredible is waiting to be known.–Carl Sagan

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Here's one that the Birmingham Paleontological Society had posted on their site. It is from the same Union Chapel mine that mine and Chris' likely came from. It would appear to be the same species showing much more of the thicker branch. Pretty clear evidence of it being part of a tree.

That's another very fine example showing branching. Thanks for adding it. Regards, Chris

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