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Birds Came From Trees!


Shamalama

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I found these couple of odd Neuropteris leaves while on a field trip to St. Clair with the Delaware Valley Paleontological Society today. I've never seen this before, could it be the result of leaf age or wind damage? They look a little like feathers but since the rocks are Pennsylvanian in age I know that is not the case.

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-Dave

__________________________________________________

Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPhee

If I'm going to drive safely, I can't do geology. - John McPhee

Check out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/

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I found these couple of odd Neuropteris leaves while on a field trip to St. Clair with the Delaware Valley Paleontological Society today. I've never seen this before, could it be the result of leaf age or wind damage? They look a little like feathers but since the rocks are Pennsylvanian in age I know that is not the case.

:o

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They are pretty frayed looking...

Before we write it off as damage, we should get docdutronc to comment. These could have been "special-purpose" leaves, or even a different species.

"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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Shamalama

It looks like it could be Neuropteris ovata. The fraying is very similar to what is shown in "Fossil Plants from the Anthracite Coal Fields of Eastern Pa"

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Shamalama

It looks like it could be Neuropteris ovata. The fraying is very similar to what is shown in "Fossil Plants from the Anthracite Coal Fields of Eastern Pa"

Perfect, one of the many books I am trying to track down and add to my collection. Wish I had it now to reference. I was almost wondering if they would be considered Cyclopteris due to the extreme rounded nature.

As shown here...

-Dave

__________________________________________________

Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPhee

If I'm going to drive safely, I can't do geology. - John McPhee

Check out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/

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Ive found lots of these in St clair over the years. they looked just like the ones shown. leaves - not feathers.

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Shamalama

It looks like it could be Neuropteris ovata. The fraying is very similar to what is shown in "Fossil Plants from the Anthracite Coal Fields of Eastern Pa"

I think you're right about the ID. I don't have the book you referenced, but when I looked through the "Fossils of Ohio" book it listed a similar specimen as belonging Neuropteris ovata but (due to scientists early confusion with giving different parts of the same plant a different name) also called Cyclopteris fimbriata. Both names will go on my specimen label. :)

-Dave

__________________________________________________

Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPhee

If I'm going to drive safely, I can't do geology. - John McPhee

Check out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/

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