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I found these in the South Dakota Grasslands. Are they fossil corral or a type of rock formation? I have heard that sponge corral has been found in the vicinity.
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Was wondering if this spine is from a plesiosaur or mosasaur. and is it a neck, tail or trunk spine? Found poorly preserved in Pierre shale sd. There are a few ribs there too. The reddish end pic is where I did a clean break form some more of the fossil which is in different jacket. I roughly cleaned this spine but don't think it's worth putting more time into with all the gypsum.
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From the album: Fossil Collection: DC Area and Beyond
Merycoidodon culbertsoni Pennington County, SD White River Formation Oligocene-
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From the album: Fossil Collection: DC Area and Beyond
Mesohippus sp. Unknown location, SD Brule Formation, Scenic Member Oligocene-
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Wondering if the species can be ID. Found in Pierre shale SD. Both teeth were touching the pointy bone. Is that a jaw? Also I put a b72 alternative on them but it sometimes leaves a white film on it which you can see in the photos. Is there a way to avoid this? Thanks!
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What could of made this? Thanks! I mostly find mosasaur pieces but never found anything this cool before. Was in a creek so not sure where it came from. But SD Pierre shale formation is around the area. 2in long. I haven't cleaned it yet.
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Found these three rocks in an outcropping of Niobrara Chalk in Southeast SD. I suspect they are sponges or coral of some kind. Pics 2&3 are both roughly the diameter of a penny, pic 1 is probably 20% larger. ID would be greatly appreciated!
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- coral?
- missouri river
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Found these five mysteries in an outcropping of Niobrara chalk in southeast SD. I think they resemble sponges or coral, though I'm well aware that they may not be. The four sand-colored ones are all roughly the diameter of a penny, though the first pic is a little larger. The red-stained one is about the diameter of a nickel. Thanks in advance!
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Found these 3 fossils 1ft apart from each other at bottom of a hill. Are the 2 vertebrae from the same area of the body as the mosasaur paddle arm bone? What's the chance this is all from same 1 animal? If so I might try looking for where they came from. Is there a technique to removing a side of a hill to find the source? Thanks
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- mosasaur
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A friend found this fossil and gave it to me as a gift. Found in a deposit west of the Missouri in SD. I've narrowed it down to some sort of Ordovician nautiloid, but haven't been able to find any closer matches. Thanks in advance!
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Found this unusual broken bone in Pierre shale with a vert right by it. Where on the mosasaur body might it have come from? Thanks!
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- mosasaur
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Found this big bone with a mosasaur vertebrae near by in Pierre shale. This is the biggest mosasaur single bone I've found. Is poorly preserved and started to weather. Is there enough to tell if it's femur or humerus? I compared it with other mosasaur but couldn't find any that were this round. What species might it be? Thanks
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Found what looks like fish jaw with tooth and skeleton. There are many pieces of this fossil but only showing part with jaw. Was found poorly preserved in Pierre shale SD. Wondering which fish species it might be? Thanks!
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Could these all be from 1 animal? Found these scattered about in Pierre shale but all within 50ft. Wonder if I should try to find the origin of where they are coming from. The paddle bone looked small compare to the verts. Would this be an adult? ID on parts would be helpful to. Thanks
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Found in Pierre shale in Sd. Might be from a concretion. the 2 parts are not from same creature it seems. Was also wondering what species it could be? Thanks
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- ammonite
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I found this fossil today in the badlands of south Dakota in a crevice at the bottom of a butte. I did not remove it but am impatient and with the photos I supplied, the paleontologist at the visitors center had a hard time identifying it and I am extremely curious to know what it may be. The round part of the bottom picture continues to be almost perfect oval through the top, however a chunk had broken off there. The discolored brown line in the crevice in the center of the first picture appeared to be bone that just barely breached the surface of the specimen (too hard to picture).
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- belemnite?
- fossil
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Identification: On the ranch where this tooth was found, only T. prorsus skulls have been found in the 30+ years the company has operated there, lending a very probable, precise identification for this Ceratopsian tooth. (T. prorsus was one of the last dinosaurs, younger than T. horridus. The two species are also stratigraphically separated in the Hell Creek Fm.[2], so it makes sense that one may only find one species in a particular deposit.) For most Ceratopsid teeth (from the Hell Creek Fm., for example), only association with an identifiable skull can allow for identification beyond Ceratopsidae indet. Notes: This tooth is partially rooted with noticeable feeding wear on the crown (the flattened surface). It has some minor repair. The second image shows a close view of the enamel, which has good preservation. Relevant Literature: 1. MARSH, OTHNIEL C., 1889. Notice of gigantic horned Dinosauria from the Cretaceous. The American Journal of Science, Series 3 38: 173-175. 2. SCANNELLA, J. B.; FOWLER, D. W., 2009. Anagenesis in Triceratops: evidence from a newly resolved stratigraphic framework for the Hell Creek Formation. 9th North American Paleontological Convention Abstracts. Cincinnati Museum Center Scientific Contributions 3. pp. 148–149.
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From the album: Cephalopods Worldwide
ø 4.5cm. Fox Hills Formation Maastrichtian Late Cretaceous From Cheyenne River, South Dakota, USA I went for a reasonably priced purchase, even though it was only one half.- 2 comments
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- hoploscaphites
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A first for me and the most beautiful tooth I’ve ever found! Pretty excited about this one. Obviously not an expert here but I think I’ve got it narrowed down to juvenile mastodon. Hopefully I can get a positive ID from the experts! Miocene, south central SD.