Petrified rosebud?

[Fossildude19]

"Spur" or "short shoots" seem to be fairly common in the Morrison Formation.

From THIS PDF: As Abyssunder noted, Behuninia sp. seems like a possible match

Regards,

EDIT: More LINKS.

ANOTHER.

Edited November 24, 2015 by Fossildude19

[abyssunder]

john h dalton, you have an interesting and intriguing thread, and a very nice specimen indeed.

The idea of coprolite is not bad (thanks Plax for this), but I'm leaning toward the idea of " short shoot" of Behuninia sp., as Tim strengthened (also thanks for that and for the liks), exemplifying for a comparative reason with a few samples, from the plant fossil finds of Wiltshire, Vale of Wardour, Great Britain; A preliminary interpretation of Upper Jurassic silicified plant fossils from the Portland Stone Formation of Chicksgrove Quarry, Wiltshire - by John E. Needham https://www.mediafire.com/?fe75b17z0c3c985

"ABSTRACT
Casts and anatomically preserved specimens of short or spur shoots occur in the Upper Jurassic Morrison Formation at several localities in Utah, Wyoming and Colorado, USA. Most of these shoots are assigned to Behuninia, which is emended to accept them. Some are also placed in the proposed new genus Steinerocaulis. Many of these structures were originally reported as fruiting structures of cycadophytes, but are here demonstrated to be short shoots probably of extinct conifers. The eroded short shoots are the remains of either external surfaces or remnants of internal structures, usually the secondary xylem and pith with only rare specimens retaining their cortices. The fossils occur either detached or attached to an axis in a spiral to subspiral, opposite to subopposite or whorled to subwhorled manner. One new combination (B. provoensis) and two new species of Behuninia (B. bassii and B. scotti) and one new combination for Steineroaulis (S. radiatus) are proposed. They are characterized by morphological rather than anatomical features in which they are all essentially the same. Based upon the morphology of leaf scars on these shoots and the fact that large-leaved forms of conifers lack short shoots, it is proposed these shoots bore needle-like leaves. Possible paleoecological conditions under which these shoots and associated fossil plants lived are also discussed. "

Short shoots from the Upper Jurassic Morrison Formation, Utah, Wyoming, and Colorado, USA - William D. Tidwell, David A. Medlyn

Available from: http://www.researchgate.net/publication/223754959_Short_shoots_from_the_Upper_Jurassic_Morrison_Formation_Utah_Wyoming_and_Colorado_USA [accessed Nov 25, 2015].

Thank you all, for your inputs.

[jpc]

great find abyssunder. I am darn near convinced, but it is taking a long time to download the 590 pages. I have spent quite a bit of time in the Morrison including at a silicified plant site, and have never seen anything like this. This is a good find.

[john h dalton]

Much better pix. It is still a mystery to me. Are you anywhere near Casper, or if you ever come to Casper bring it in to us at the Tate Museum. We would love to have a look at this... and no we have no right to confiscate

I live in Worland but next time i'm going to be going through Casper we will surely bring it by.

[abyssunder]

Although for me takes only one minute or two to download the mentioned document, I splitted it to be more convenient for access and download. I hope is better now.
FRUITING ORGANS FROM THE MORRISON FORMATION OF UTAH, U.S.A. - MARJORIE E. J. CHANDLER

FRUITING ORGANS FROM THE MORRISON FORMATION OF UTAH,U.S.A..pdf

A preliminary interpretation of Upper Jurassic silicified plant fossils from the Portland Stone Formation of Chicksgrove Quarry, Wiltshire - by John E. Needham

A preliminary interpretation of Upper Jurassic silicified plant fossils from the Portland Stone Formation of Chicksgrove Quarry, Wiltshire.pdf

Also few more color pictures : https://www.facebook.com/media/set/?set=a.824640214268147.1073741875.214606828604825&type=3

Happy Thanksgiving Day!