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These are multituberculate teeth found in the lance formation, I have yet to identify all of them and would like some insight. I have to post these in groups because there are so many but I can share the animals I think show the closest resemblance.

Have you ever heard of Petrified Flame Sponge from Wyoming? I just bought (in the mail) the below piece because I want to look at it under a microscope and I think I can take some interesting pictures of it. It is supposed to be from the White River Formation in Wyoming. See the below cards with it. Marine from the White River Formation doesn’t make sense to me. Fluvial would, but not for sponges. Tsunami in Wyoming also doesn’t make sense. Reworked from older Formation? Ideas on what this is? Just a name for a type of agate? Petrified Flame Sponge Slab, Late Eocene/Early Oligocene White River Formation, Wyoming (66 grams 3.5 inches x 6.2 mm thick): Marco Sr.

I saw this published thought it might interest some members. An age-depth model and revised stratigraphy of vertebrate-bearing units in Natural Trap Cave, Wyoming is presented in this paper https://www.sciencedirect.com/science/article/pii/S1040618222000222

I got this fossil from a Wyoming in Tucson, Arizona. I was thinking it's a jugual bone from a Ceratopsian or a Hadrosaur.

These are photos of an unidentified tooth from the lance formation in Wyoming, it was put in a group of mammal teeth all approximately in the range of 2-4 mm in size. Among the teeth two of them have been identified as shark, one is a Lissodus and the other is unknown as of now. If there are any ideas as to what this tooth could be please do share.

I was recently given this amazing fossil from an old man before he passed away. While he couldn’t remember exactly where it was found, he did tell me a general area in Wyoming that is known for Eocene fossils. Any help with identification is greatly appreciated!

On August 12, 2021, I went with my family to a fossil dig in Kemmerer, Wyoming. Two friends from Japan went with us also. We all found a lot of fossils that day. The two friends from Japan even found a small whole Phareodus testis! There was, however, one fossil that was unusual, and we couldn’t get the exact species. Picture is attached. All the people at the quarry said was that it’s a wood imprint, or something like that, I don’t exactly remember. Here is the question. Is this a wood fossil? Second question, if it is wood, is it possible to identify the exact species? I ask because I am getting ready to frame and label it. If the exact species cannot be figured out, that’s okay. I’ll find out how to label it. Any help will be appreciated, Jared

Hello, Found on internet an Pterosaur tooth from Albany County, Wyoming - USA, Morrison Formation. What do you other people tink about it. Is it Pterosaur? And what about the species? It is named Pteranodon, but that cant be right.

A new and beautifully preserved Crocodyliform from the Upper Morrison Formation of Wyoming. Amphicotylus milesi A new goniopholidid from the Upper Jurassic Morrison Formation, USA: novel insight into aquatic adaptation toward modern crocodylians | Royal Society Open Science (royalsocietypublishing.org)

Welcome to another Fossil Friday! My video today is my first time prepping a fish from the Green River formation, 18-inch layer. This fossil was from recovered from outside of Kemmerer, WY by a friend, @Ptychodus04

I've been in the lab this fall/winter but preparation has taken a back seat to the plastics/replicas operations. As things start to wind down with plastics around this time of year, I'm embarking on my next prep project. This specimen is from the same Wyoming locality as the Herpetotherium I posted about recently but was found many years ago(~15?). It appears to just be an upper skull of a small rodent but there is some hope for lowers. I pulled this piece out of its field packaging in April but just now starting preparation in earnest. So far, all I've done is rough prep around the boundary to remove the bulk matrix surrounding it. It was attached to a larger block but there is no evidence of any additional bone fragments in the other block. The bulk removal was done with my trusty ARO but all prep going forward will be done under magnification with a Paleotool's Microjack-3 or pin vices. Identification will take a while but we'll talk about the process as I get the specimen uncovered. If I had to guess at this point, I suspect it to be Paradjidaumo. Time will tell if I'm correct.

I purchased a andolousiana trilobite today in Wyoming and I'm not 100% sure on the legitimacy of it. Any thoughts would definitely be helpful!

I was given the fossil fish below. It didn't come with any details, but this looks like a Green River Formation fish, which means it could be from Colorado, Wyoming, or Utah, right? Any thoughts on genus and possibly species? Thanks!

Hey everyone! Would anyone be interested in doing a group trip to Kemmerer, WY next summer? Since we moved to Wyoming 2 years ago I’ve been dying to go to a quarry out there for some fish but circumstances have prevented that. My family has no interest at all and, because of anxiety, I don’t want to go alone. Plus, I think it would be a fun experience for forum members to be able to get together and have a good time. I only have 2 summers left here and next summer would probably be the easiest one for me. Someone please say yes!

I bought this tooth and the seller named this 'Allosaurus', but the serrations are more dense and the mesial carina stops far before the root. Is this a megalosaurid or allosaurid? Anyone can help? The base width/base length = 4.2mm/12.3mm Locality: Morrison formation, Wyoming Distal carina Mesial carina

Utah man discovers fossilized ‘fish-lizard’ at Flaming Gorge Reservoir By Jordan Miller, Salt Lake Tribune, October 7, 2021, Paleontologists recover rare “Fish-lizard” fossil in Utah By Eliza Craig, KSL News Radio, October 6, 2021 Utah boater finds fossilized 'fish-lizard' at Flaming Gorge By Matthew Sampson, KUTV, October 5, 2021 Some papers: Sprinkel, D.A., Chidsey Jr, T.C. and Anderson, P.B., 2010. Geology of Flaming Gorge National Recreational Area, Utah, Wyoming. Geology of Utah's Parks and Monuments: Utah Geological Association Publication, 28, pp.277-299. More papers, Douglas A Sprinkel, Utah Geological Survey Yours, Paul H.

Greetings, y'all. Its been a busy summer. No time to post much here, but I did get out quite a few times this year, even though I successfully turned 60 years old this summer. Let's see what happened in my little world last weekend. During a May trip, I went to one of my usual hunting areas in southwestern Wyoming where I have collected mammal, croc, fish, and turtle fossils from the Bridger Fm over the past two decades. There is a lot more terrain out there for me to explore so I decided to check out a new area a few miles further down the two-track. Here is a photo of where I ended up. Upon a quick survey, I found numerous turtle pieces high on this hill near the big shady area on the right of the photo. But time was running out. It had taken quite a while to navigate the 'road' to get here and the weekend was running out. Time to head home. But I knew I would try it again later. That was back in May. Well, 'later' was this past weekend. I started on Friday where I had found fossils in May, then headed downhill. The whole base of this ridge is loaded with turtle pieces from a variety of Eocene turtles of all sizes. All bits and pieces. I found one mammal piece and a few crocodile pieces, but then something jumped out at me... a pile of bones that suggested the bone continued into the rock. And, bonus, I could tell this pile of bones was the articular end of a crocodilian jaw. It was time to start digging, and digging I did. In a short while I had a jawbone about a foot long, then ran into couple of nice teeth. Pretty exciting. I was so excited about this that I forgot to take photos along the way. Here is one. The originally exposed bone pieces are the white pieces on the left. For scale, the paintbrush is 2 inches wide (about 5 cm). Just above the tip of the handle of the scraper is the first tooth I found. The second tooth broke off as part of its discovery (but I kept it for re-glueing). The hammer tip above points to its base still in the jaw, almost two inches to the right of the other tooth. I camped out on site... The next morning as I was eating my granola for breakfast (with coffee) I had a visitor. Find and identify the animal... Yes, that is a bull elk on the horizon about a half mile away form me. he watched me for a long time, and I him. There are many desert elk in southwestern Wyoming but it is always a treat to see them. Especially way out in the wilds. I certainly don't see them on every trip to this part of the state, and never in this area. As I watched the elk north of me, this fellow, below, walked by my camp to the south, much closer. On my drive down I counted 211 pronghorns between Casper and Rawlins (112 miles) and another 120 or so between Rawlins and Wamsutter (about 40 miles). The latter were along the interstate highway, where I rarely see them. But it is hunting season and these guys know that hunters are not allowed to hunt from the highways, so along the roads is a safe place to be in October. I thought the jaw might take most of the day to collect and I was right, and actually into Sunday morning (about 12 hours all together). I was slowed down by a fun development after I had plastered the jaw; the other jaw (left side) is there are well! In the photo below you can see it below the hammer. The articular surface is that blob of bone on the left end. Zooming in you can see a few teeth from the left side. In the above photo they are just below where the blue handle meets the metal hammer. Below is a close up where you can see two teeth. As you can see, the left tooth broke upon discovery so I did not expose the left teeth any more than this, but jacketed this whole pile of bones and rock. This almost last shot shows how far I had to haul it to the car. I use a dolly for this (also called a hand truck; no photo). After jacketing the specimen, the next step is to jam a few wide sturdy chisels under it to split the bottom layer of rocks so I can roll it over. Below is the thing rolled over. That is the left jaw showing on the bottom side. Next.. into the prep lab... And last but not least... on the drive out of the desert... about 10 miles of two track at slow speed, I ran in to this critter. This is almost the last of Wyoming's mammals I would expect to see out in the sagebrush. Yes, that is a moose. I used numerous not-for-family-viewing words when this guy showed up. What the heck is he doing out here? Moose like to live in watery, wet place with trees. I have seen them in several pine tree covered mountain ranges in Wyoming, as well as in Yellowstone National Park, and the forests of Maine and Alaska, but in the desert???!!! Apparently bulls do travel quite a ways in hopes of meeting new lady meese. Finding and collecting my best croc jaw in 30 years was one piece of excitement, but seeing the moose in the sagebrush made my weekend. And the moose did not make my arms and hands sore. Thanks for reading.... Happy fossiling.

The title says it all. It’s a nice tooth, but I’m going back and forth on it because the telltale wear patterns for either group are not present as far as I can see. I apologize for the poor quality of my camera phone picture.

So, I was going through my fossils from my last trip to Kemmerer Wyoming. One of them accidentally split, revealing this. It looks like a kind of Coprolite, but I’m not sure. It’s got scales in it, but it’s too flat to be regular Coprolite. I suspect it is stingray Coprolite, as the people there told us to watch out for it, because they have been finding a lot. Can someone help me ID this? Jared

A presumed horse metapodial from the Eocene sediments of the Big Horn Basin (Wyoming). Post some other things from here as well, but was wondering if anyone could narrow down this ID. Thanks!

Two limb bone fragments from the Eocene deposits in the Big Horn Basin. Mammalian, but don't know anything more beyond that. Would really appreciate help!

Three New Species of Primitive Ungulate Ancestors Identified from Wyoming University of Colorado Boulder , Sci News, Aug 18, 2021 Post-Jurassic Fossils Uncovered By CU Boulder Scientists Danielle Chavira, Channel 4, CBS, University of Colorado Boulder, August 18, 2021 The paper is: Atteberry, M.R. and Eberle, J.J., 2021. New earliest Paleocene (Puercan) periptychid ‘condylarths’ from the Great Divide Basin, Wyoming, USA. Journal of Systematic Palaeontology, pp.1-29. Yours, Paul H.