David Powers

Hi @mackenzie-smith

The differences in my leaves to those in the paper bugged me. So I contacted Dan Peppe  PhD the co author of the paper you referenced. Believing he would have more insight and  information for IDing these leaves. I am happy to say he answered my email. He sent me a Paper

REPRODUCTIVE AND VEGETATIVE ORGANS OF BROWNIEA GEN. N. (NYSSACEAE)
FROM THE PALEOCENE OF NORTH AMERICA
Steven R. Manchester1 and Leo J. Hickey
Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611-7800, U.S.A.; and
Peabody Museum of Natural History, Yale University, New Haven, Connecticut 06520, U.S.A.

https://www.researchgate.net/publication/249158109

These fossil leaves more closely match the  Browniea Gen .

Between your help and Peppe’s these leaves are now identified.

Thank you

David C Powers

Hey @mackenzie-smith, thank you for the reply. I had looked at Dicotylophyllum hansonium from Peppe and Hickey 2014.  At first I thought my specimens matched until I brought the photo in the report to a 100 res. and notice some differences between the example and mine.  This is the best match considering leafs of a tree can be different in shape up to maturity and where they are on the tree.

I have other plates containing these an other leave. How know maybe I will find better specimens.

Thank you for your help.

Cheers

David

@mackenzie-smith I am seeking help identifying these leaves. They are from the Tullock Member of the Fort Union Formation. Site is  northern edge of Miles City, Montana. I have gone to Rsearcher Gate and found a number of papers but none have images of these leaves.  The leaves in the larger plate are about 3 x 7 cm. Secondary viens stater at base as palmate and the alternate along main vein. Secondary veins divide near margin . Toothe is serrate  Mixed in with these leaves are Sequoia leaves and bark and grass or maybe pine needles.  Rock is a clay shale.

Hi Jim Chandler,

Yes, I am familiar with the woostergeologist blog and I have read the post on the permian productid brachiopods collected from Texas. Those he writes about are a little younger. With brachiopods  knowing the age of the formation where they were collected is really important. But there are a huge variety of brachiopods forming a confusing hay stack of almost look a likes. Ages and locations narrow the possibilities.

Thank for you advice.

David.