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Question about the age of my metasequoia cone


Zapsalis

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Hello Fossil Forum! I recently purchased a metasequoia cone that is from the Huff, North Dakota area and the place I purchased it from has a tag claiming that it is 85 million years old. I believed it at first, but after some research I am unsure of its age. I have a Mesozoic collection going, so I’d like to know if it is late Cretaceous in age. Thank you!

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That looks very similar to ones I've seen from the Hell Creek Formation which does outcrop in North Dakota, but only 66 to 66.8 mya or so. 

Not heard of older ones. 

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11 minutes ago, Tidgy's Dad said:

Not heard of older ones. 

Here’s some from the lower Cretaceous Arundel Clay of Maryland (upper left corner). the OPs is not likely from MD, of course.

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I am not sure the tree in the Hell Creek is described, probably best called Metasequoia sp., someone might have an update.  By the way these are not the actual cones from the tree but casts of what remains after the cone disintegrates.

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9 hours ago, Troodon said:

I am not sure the tree in the Hell Creek is described, probably best called Metasequoia sp., someone might have an update.  By the way these are not the actual cones from the tree but casts of what remains after the cone disintegrates.

 I was going to say Metasequoia dakotensis, but I think that is too young (I’m most likely wrong). Also, I’m aware that this is just a cast of the original cone. 

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6 hours ago, Zapsalis said:

 I was going to say Metasequoia Dakotensis, but I think that is too young (I’m most likely wrong). Also, I’m aware that this is just a cast of the original cone. 

Well that  is the name I use for my cones but I cannot find any literature that supports that taxon why I used sp..  Fossilworks does not show it as a taxon.  The museum in the School of Mines in SD labels it something else.  Sequoia dakotensis is valid from the Lance per Brown, Yale Peabody see photo so have to assume it similar for the HC.  So not being a plant person dont have an answer.

 

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1 hour ago, Troodon said:

Well that  is the name I use for my cones but I cannot find any literature that supports that taxon why I used sp..  Fossilworks does not show it as a taxon.  The museum in the School of Mines in SD labels it something else.  Sequoia dakotensis is valid from the Lance per Brown, Yale Peabody see photo so have to assume it similar for the HC.  So not being a plant person dont have an answer.

 

IMG_2870.thumb.JPG.caa1bd6d690aaca84f8673a71de2fab9.JPG

 

Screenshot_20180817-034921.thumb.jpg.bdc721c898270e17f28c411e20b1faf1.jpg

Is there anybody here I could contact who would know these types of fossils?

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4 minutes ago, Zapsalis said:

Is there anybody here I could contact who would know these types of fossils?

That are knowledgeable on the HC fauna no. 

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2 minutes ago, Troodon said:

That are knowledgeable on the HC fauna no. 

Dang! Maybe I should talk with professors at my local geology museum some time. Maybe they would know. 

 

My fossil cone is Cretaceous in age, correct? 

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Just from what I am seeing online, it looks like the 3 dimensional cones are from the Cretaceous, while the flattened ones are from the Eocene. 

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