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Hi, I got this piece of sauropod femur in February of this year as well as one more large piece, both associated and from the Morrison formation. Is there any way to differentiate fragmentary bones of sauropods from the Morrison or a way to get an identification on this individual?

Ok a website I was looking at is selling what it claims to be pieces of Brachiosaurus Bone. I cannot post photos because I would incriminate the seller, but the piece looks genuine enough. What I want to know is the likelihood of it actually being Brachiosaurus. By my understanding their fossils are quite rare so even a small fragment of the genuine article would not be cheap, these ones are offered at 19 dollars. According to their information, their pieces comes from a Brachiosaurus femur from the Morrison Formation in Utah. The Morrison Formation is the right, and as I understand only, place to find such fossils if this was genuine but it's also a place were other sauropod fossils are found. They also include an image of some fossil bone that I assume the piece was taken from, but it's give no true scale to it or shape. It sounds a little to true good to me, but what do you all think based on the info they provide. I personally doubt it, but I thought it couldn't hurt to ask.

Quick guide to help identify a few Sauropod teeth from the Morrison Formation. Corrections and additional info always appreciated Please Note: Variations in the morphology of these teeth can vary significantly do to, species, jaw position and ontogenetic changes. This is just a high level guide. Camarasaurus: - Crown is wider than the root - Anterior Teeth are spoon-like and symmetrical, mid and posterior teeth are asymmetrical - The crown enamel ends sharply where the root begins - Wear facet, if present, can be on both sides of the tip From my collection 14.5 cm long and 7 cm long Jaw mechanics showing wear facets Brachiosaurus - Crown are only slightly wider or equal to their root - Teeth are intermediate between spoon-like and peg-like depending on jaw position - The crowns typically have an axial twist relative to the root - Crowns are Conical and Chisel-Shaped - Wear facet, if present, is sharp and at the tip but almost always pointed - The crown enamel blends into the root area. Not has sharp of a cutoff as Camarasaurus From my collection 9.5 cm long From the collection of @hxmendoza from a previous post Jaw mechanics showing wear faceting Diplodocus - Peg-like teeth long and narrow - Slightly curved teeth - Crown enamel blends slightly into the root Jaw Mechanics of Diplodocus showing wear faceting From Supplier, Paleo Gallery Apatosaurus Dont have much published on teeth but from examining ones in my collection they appear to be faceted, grooved toward the base some more than others with sharper edges. More compressed than Diplo. Provided by hxmendoza on a previous post, he made similar comments From Paleo Gallery you can see the faceting References 1) Tooth Replacement of Euhelopus zdanskyi (Dinosauria: Sauropoda) and the Evolution of Titanosaurian Tooth Morphology, Sept 2014 Salakka, Seela 2) Jaw mechanics in sauropod dinosaurs, Jan 1994 Jorge Calvo 3)The dentition of a well-preserved specimen of Camarasaurus sp .: implications for function, tooth replacement, soft part reconstruction, and food intake. NOV 2016 Kayleigh Wiersma P. Martin Sander @Masp hope this helps

Hello all I would like to share my first sauropod teeth in my collection it is a brachiosaurus tooth from morrison formation looking at the size of the teeth is likely a juvenile teeth love the colours on it has well.

Could somebody please explain to me, and possibly show me, the differences between Brachiosaurus vs other sauropod teeth in the Morrison Formation? Since these teeth are so rare I have seen few pics of them. How would one ID?

Camarasaurus or Brachiosaurus tooth? I'm leaning more towards a Camarasaurus because the crown/spoon head doesn't twist much from the neck of the root. Info on where found: Morrison Formation, Big Horn Basin Ranch, Wyoming 2.25″ long