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Hello,

 

Can anyone help identify this leaf with crenately lobed margins from the Florissant Formation? It sort of looks like a flower petal, even though that's probably a long shot. It's really prehistoric looking and it caught my eye! I haven't seen any leaves like it from the Florissant area. Thanks in advance for the help! 

 

Aforementioned leaf is approximately 7/12 inches long.

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"Its webs of living gauze no more unfurl;

Wrecked is the ship of pearl!

And every chambered cell,

Where its dim dreaming life was wont to dwell" :ammonite01:

-From The Chambered Nautilus by Oliver Wendell Holmes

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I'd lean towards leaf instead of petal, as for identification not sure, due to size it might be a younger leaf which is why it might be throwing us off, maybe a small fagopsis sp.

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6 minutes ago, Top Trilo said:

I'd lean towards leaf instead of petal, as for identification not sure, due to size it might be a younger leaf which is why it might be throwing us off, maybe a small fagopsis sp.

I've never seen a Fagopsis with the definitely rounded lobes mine has.

"Its webs of living gauze no more unfurl;

Wrecked is the ship of pearl!

And every chambered cell,

Where its dim dreaming life was wont to dwell" :ammonite01:

-From The Chambered Nautilus by Oliver Wendell Holmes

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Just now, yardrockpaleo said:

I've never seen a Fagopsis with the definitely rounded lobes mine has.

Yea. I was just checking that out. Ready fire aim. :)

Maybe the tip of a fern ?

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Compare with: Dryopteris guyotti 

mail?url=http%3A%2F%2Fmail.yimg.com%2Fok%2Fu%2Fassets%2Fimg%2Femoticons%2Femo71.gif&t=1620950589&ymreqid=23281213-8dc1-3cff-1cfd-81000c01be00&sig=PsNXNieVT8LC3iERheFsjg--~D

image.thumb.png.db34a7147a216e443b332264bc29e334.png

MacGinitie, H.D. 1953
Fossil Plants of the Florissant Beds, Colorado.
Carnegie Institution of Washington Publication, 599:1-198

  • I found this Informative 5
  • Thank You 1

image.png.a84de26dad44fb03836a743755df237c.png

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On 5/13/2021 at 8:49 PM, piranha said:

Compare with: Dryopteris guyotti 

mail?url=http%3A%2F%2Fmail.yimg.com%2Fok%2Fu%2Fassets%2Fimg%2Femoticons%2Femo71.gif&t=1620950589&ymreqid=23281213-8dc1-3cff-1cfd-81000c01be00&sig=PsNXNieVT8LC3iERheFsjg--~D

image.thumb.png.db34a7147a216e443b332264bc29e334.png

MacGinitie, H.D. 1953
Fossil Plants of the Florissant Beds, Colorado.
Carnegie Institution of Washington Publication, 599:1-198

Wow, it certainly fits with spleenwort! Thank you!!

"Its webs of living gauze no more unfurl;

Wrecked is the ship of pearl!

And every chambered cell,

Where its dim dreaming life was wont to dwell" :ammonite01:

-From The Chambered Nautilus by Oliver Wendell Holmes

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  • 4 weeks later...
On 5/13/2021 at 8:49 PM, piranha said:

Compare with: Dryopteris guyotti 

mail?url=http%3A%2F%2Fmail.yimg.com%2Fok%2Fu%2Fassets%2Fimg%2Femoticons%2Femo71.gif&t=1620950589&ymreqid=23281213-8dc1-3cff-1cfd-81000c01be00&sig=PsNXNieVT8LC3iERheFsjg--~D

image.thumb.png.db34a7147a216e443b332264bc29e334.png

MacGinitie, H.D. 1953
Fossil Plants of the Florissant Beds, Colorado.
Carnegie Institution of Washington Publication, 599:1-198

Seem like the tip probably fossilize better than most experts suspects. But I had seen some lookalikes so have to be careful. Picture is of two specimen. A sizable leaf and a tip piece along with negative molds and whatever. 

100_9378.JPG

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On 5/13/2021 at 7:19 PM, Top Trilo said:

I'd lean towards leaf instead of petal, as for identification not sure, due to size it might be a younger leaf which is why it might be throwing us off, maybe a small fagopsis sp.

Be careful about throwing Fagopsis around. I see a lot of misidentified "Fagopsis" that is actually Rhus species online. One Rhus species is top 10 most abundant with a second one top 20 most abundant. From what I had seen of the book, the environment of the Florissant Fossil beds more resembles California Sierra Nevada so keep that in mind. Classic western environment with a bit more moisture  than usual, which is very different from present day Florissant location. 

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