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This is being sold as a Thescelosaurus toe. I'm having doubts as I've never seen a Thescelosaurus claw this curved, most are far more flat on the ventral side. Any opinions? From Hell Creek formation, Jordan, Montana. Size 10cm / 3.9"

This is being sold as a Pachycephalosaurus tooth from Hell Creek Formation, Montana, USA. Size 10mm / 0.4" I find it hard to distinguish between Pachycephalosaurus, Thescelosaurus and Ankylosaur/Nodosaur teeth, is this really Pachy?

Bought these in a lot of online auction site, guy said he found them in New York. Any help identifying them is greatly appreciated, thank you!

Dimensions: To begin, the specimen is 36cm long, 19cm wide at the base (widest point), and about 7cm thick at the thickest point (base). Background: I am a student doing research in the Museum of Biodiversity at Notre Dame. I have begun a project to try to identify many of the fossils in the collection. Many years ago, there was a faculty member who was a paleontologist who collected specimens for many years, most of which now reside in the museum. The issue is that he passed away suddenly and left many fossils without much or any information attached. From what I have been able to gather, most of his fossils have come from the Hell Creek Formation in Montana (66-65 mya, late Cretaceous), due to all of his fossils in field jackets coming from this location (like this one, that I removed from the jacket). All other jackets (that are currently opened) in the museum contain remnants of a triceratops. There are many more that have not been opened from the field, which I believe were collected in the mid 1990s (unimportant). Because of the ambiguous nature of the fossil and my inexperience with fossils (I have just started exploring the field). I am the only person in the museum who has touched the fossils in at least 5-7 years, as there is no full-time geologist or paleontologist on faculty at ND, and the collection is solely taken care of by students who have interests. Identification?: When I first started working on the fossil, it was labelled with an identification as "Fish?". I have absolutely no idea who tentatively identified it as such, and in looking at it, I have no idea what led them to the conclusion. I, personally, do not see anything fish-like about it, sans the vague shape resemblance. Because of this, and my suspicions about where it was found and what other fossils are found at Hell Creek, I thought that it was unlikely a fish. From the concentration of ceratopsidae that are found in the formation and the amount that we have in the museum, I started to explore the possibilities of it being a part of one. Because the museum also has other parts of the same triceratops skull such as two horns, the beak, and one small skull fragment. I first thought that it may be a frill, due to the lines that I thought might be blood lines, which are found on most frill fragments, but the patterns appeared to be different (see photo 2). I then looked into other parts of the skull that might fit this fossil fragment. Following this, and based on the ridge that runs along what I assume to be the back of the specimen, I theorized that the it may be a piece of the squamosal bone morphology of the skull of a ceratopsian. Also, because there are parts of an ankylosauridae in the museum, I thought that it may be an armor fragment. Please know that these preliminary identifications are based on my limited knowledge of the morphology of late Cretaceous animals, and the lack of information I have on this specific fossil. Any help will be appreciated, and I will be looking closely to respond any questions on the subject. Lastly: As I am beginning in the subject of paleontology, where do you suggest that I can get my information? Are there any preferred resources, textbooks, or databases where I can increase my knowledge? Thank you for your help, and I look forward to learning more and maybe eventually contributing to the Fossil Forum when I learn more in the future. I have been using the one textbook in the museum dealing with fossils of these sort, where I read about the frills and skull morphology of ceratopsidae: Romer, Alfred S. (1966). Vertebrate Paleontology. The University of Chicago Press.

Can anyone ID this please, I'm thinking a coprolite but not sure. I found it in the Redcar area Yorkshire along the coast line. Thanks.

Found in the badlands of Alberta. I put it in my hand to show you the size. If anyone has any idea it would be greatly appreciated. What dinosaur would this I think leg bone belong to?

I have recently bought a mixed bag of random verts that I am wanting to use to make little kids boxes for my shop. I know there is many different types etc in here but I wondered if there is some general info that could be gleened, rough age, fish sizes are the longer ones from a specific part of the spine etc? They are just a little pocket money buy for the kids but the last thing I want to be doing is telling them wrong information! Thank you for your time

Hello all I need some help ID-ing some strange fossil fragments I have found in the central Alberta Red Deer river valley. The two large pieces were found upstream from Drumheller Alberta near the Red Deer river. The shape & texture looks like it could be frill fragments & the three small pieces were found on my friends property very close to Drumheller. The three small fragments once piece looks like a jaw fragment and the other two have me stumped? The bumpy spongy looking one with holes could maybe be a scute & the other looks like a tooth with a Ridge down the middle. Any help to ID is greatly appreciated! Thanks

Greetings, My name is Joey (or Joe, or Joseph) and I’m a rockhounder and fossil-hunter from Baltimore. I’m very passionate about the science of paleontology, especially the Mesozoic east of the Mississippi, and Maryland’s Cretaceous in particular. As for background, I worked for about 20 years in the public school system as a STEAM teacher and paraeducator until I quit to pursue freelancing, collecting and art (unfortunately, I make more money in that than I ever did teaching!). I’m also very active in ornithology and aviculture studies; I volunteer at a captive raptor aviary in AA County, and I raise coturnix quail for meat and eggs both as a side hobby and to help stock local food assistance programs. I also have a pair of trained pet pigeons (I love theropods, can’t you tell?). I have an extensive fossil collection. I often acquire old boxes of bones from older collectors, in hopes I can ID and catalog some of the material. You’ll probably see me in the Fossil ID section. I really hope to expand my knowledge in both anatomy as well as my ID skills. I also hope to network with some locals re Maryland paleo. I look forward to talking with and learning from folks here. Thanks for having me.

This was found in the badlands if alberta. I'm not sure where exactly this bone fits on a dinosaur.

Found this in lo valdes

Hello! I bought this new mosasaur teeth and I would love to know what kind it is! Thank you!

Hi, I was wondering if anyone could help identify these possible fossils found in the Hokianga Harbour in New Zealand?

This came out of a box of fossil bone I received from a fossil hunter out in eastern Mississippi. The only story I got with them was that they were found on the Eutaw Formation and Tombigbee Sand, and collected across Lee, Monroe, Itawamba and Chickasaw counties. These bones are a huge mix of Cretaceous and later material. I found some fossil mammal teeth mixed in, including what looks like a chip of mastodon tooth. So, they were all mixed together in the box. Because I’m a fan of impossible tasks, I’ve taken to trying to ID and catalog some of the material. Out of this box I pulled this bone—it looks to be the worn proximal head of either a humerus or tibia. My next question would be—is there a way to determine a Cretaceous dinosaur from a Pleistocene mammal? I know you can sometimes tell based on the growths of the trebacular bone, but that I’m still learning. You’ll probably see me on this sub-forum a lot as I refine my search image. I took…a myriad of photos. Inside and outside, with tape measure. I can take more detailed photos on request. Maybe I can get some light shed on this while learning something new. Thanks for your time. I may have had some trouble uploading the photos and video, I’m doing this on my phone with a cracked screen. I can post more detailed photos in comments if necessary. IMG_1907.mov IMG_1907.mov

I found this fossil in lo valdes, Chile.

Hi all - found a small outcrop in an area mapped as “Eagle Ford Group and Buda Limestone undivided.” I filled a plastic bag with crumbly matrix and have so far found 2 Ptychodus teeth amongst other shark and fish teeth and fragments. Can anyone help narrow down an ID on these two? I’ve also included a photo of some of the matrix I gathered. Curious if anyone can tell the age or more details based on its appearance and the IDs of these teeth. Thanks!

Hello! I was hoping someone could help with identifying this fossil. It was found at an abandoned rental property in Copperas Cove, Texas about 15 years ago. I do not know where it was originally found. I hope these pictures are adequate. Thanks for any help!

I could use some help identifying this extremely large echinoid. I believe it is from Sardinia, Italy. Measures - Base 133 mm, Height 107 mm

hello. on a website i use to buy fossils from some seller posted this tooth and claims to be a tyrannosaur tooth. on reddit some people said it might be shark but other user told me to ask here as it might be some kind of troodon tooth. could you please help me id it and make an idea of the value if i want to buy it? thanks beforehand

Hello! I got these two new mosasaur tooth and anybody have ideas what kinds or kind do these belong to? Thank you!

Hello, I have a few specimens my kids and I have found and need help identifying, if they are indeed fossils. I included a dime for size reference, but will try to include a measurement also for each: The first two images are a swirl shape in rock (I was hoping it was a shell) about 4 centimeters across The next images are of two round things (1.5 and 2 cm across) embedded in a rock, there are crinoid stems embedded near them All were found in Hamilton county Tennessee. Thank you for any info

Hi, Can someone please help me identifying this little fossil? This is the info I have about it: Size: 16mm Location: Närke-län, Sweden Age: Middle Cambrian Additionally, there are some other elements in the plate and I was wondering if they are of any significance or if they can be identified (attached close-up images of them as well). Thanks in advance.

Hiya everyone I’m interested in this allocation of mosasaur teeth I know the roots are often faked so any help would be great.

Going through material from last year and found this piece. It looks to be some sort of plates. Roughly 1.5"×1" for full specimen. Larger plates are around 1.25cm in diameter with the smaller ones around 2/3 cm. I don't recognize it. I tried the lick test as I was told bone sticks to your tongue and it does stick. Fish plates have been found in this locality but I have never found anything definitive. Unsure of the formation. It was near the bell shale washout in Rockport quarry where I picked it up. I suspect it came off the hill going west of the creek near the trail.

Hi! I received recently several ammonites and I would like to ask for some help identifying the fossils so I can appropriately tag them (species, age, etc) This is the info I received from each fossil: 1. Found in Sakahara, Madagascar. 2. Found in Gundelsheim in Baden-Württenberg, Germany. 3, 4, 5 ,6 Found in Marloffstein, Germany 7. Found in Sengenthal bei Neumarkt i.d. oberpfalz, Germany. Parkisonia. 8. Found in Marloffstein, Germany 9. Found in Saratov Russia, Jurassic. 10. No info 11. Found in Swabian Alps. (are these two real or carved?) Thank you in advance!