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Showing results for tags 'south dakota'.
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More goodies from the same site as the sandstone nodules. Some of this looks like wood to me and one seems highly probable to be a bone fossil. Sorry no metric on the tape measure I'll look for a duel standard measure next time im in town.
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Found these in southwest South Dakota. Looked at thousands of images online before troubling you fine folks. Found in an arroyo below layers of possible fossilized bone and a layer with a variety of chalcedony/agate
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Another one looking to ID. Judging by some of this bone’s characteristics, me and some friends are leaning ankylosaur. It looks similar to a skull piece I saw posted online as well. What are your thoughts?
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I found this specimen where I have found most of my others, near a cow pond off of Vermillion Lake about 16 miles from Sioux Falls. I am very curious as to what it might be true to it's smooth and refined shape.
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Mammal Brain Endocasts from the White River Badlands of South Dakota
Nimravis posted a topic in General Fossil Discussion
I was looking at some of my collection yesterday and dextrose take pictures of my better mammal brain endocasts from the White River Badlands of South Dakota. The first piece is exposed on a partial skull of an Oreodont. This next piece is my favorite and I believe it is from an Oreodont. These other pieces I can only guess, but I would also think Oreodont. This small one appears to be from a rabbit. This last one was ID’d as coming from a Hesperocyon, but cannot confirm that.
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Fossil Friday once again! This is the last of the South Dakota exploration trip, hunting the Pierre shale for cephalopods and hopefully a mosasaur. Although the first half of the Pierre shale exploration went pretty slow, it wasnt without a few nice finds. The second part, we were extremely fortunate in that we got to meet Neal Larson and hear a short talk about the local Pierre shale formation, and then he took us out to his personal hunting site.
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Hello, I have just received this partial lower jaw, it is supposed to be from Leptomeryx evansi, but i have seen many skulls of L. evansi on the internet, and this doesn't look similar. It comes from the Oligocene of Orella member, Brule formation; South Dakota. I have got three questions; Who did this jaw belong to? What part of the jaw did these teeth occupy? Is that hole on the first photo normal? Or was made by an animal or disease? Thanks to everyone!
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I have 2 small selections of shark teeth that I recently acquired in a collection that I had purchased. These teeth are supposed to have been collected in North Dakota and South Dakota. The first selection was collected on 4-3-1986 in Moffit, North Dakota in the Cannonball Formation, which was referenced by the collector as being Paleocene (58 MYO). The next selection was collected in Edgemont, South Dakota from the Late Cretaceous, Green Horn Formation. Any help on these would be appreciated. Thanks
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Hello, I had a question about the coloration of the beautiful South Dakota ammonites from the Fox Hills formation/Pierre Shale. Namely, many Hoploscaphites/Discoscaphites ammonites have a milky white nacre of the shell, whereas others seem to have a vibrant red/brown sheen. For example here are two photos of Hoploscaphites nicoletti I found demonstrating the two types of colorations: I was wondering what causes the difference in this coloration, and whether one is more rare/valuable than the other? I want a nice South Dakota ammonite for my collection and I'm contemplating options. Thanks!
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Hi everyone, I was just browsing @PrehistoricFlorida's website and my eye was caught by what was labelled as a pocket gopher femur (trust me there were many more impressive fossils that caught my eye as well). Reason being, I found a very similar bone on a hunt in South Dakota's Hell Creek formation back in 2019. I kept it, hoping in my heart of hearts that it was fossilized, but keeping my expectations low. The rusty staining on the bone made me think there was a chance it was just a beautifully preserved Cretaceous limb bone, but I knew it was most likely recent. It's about 2.5 cm long and .7 cm wide at the proximal end. I'm interested in your opinions about whether or not I can confirm this bone as modern/recent. Floridian specimen. Dakotan specimen.
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Happy Christmas eve, Merry Christmas, Happy Holidays and a prosperous new year! It may be Christmas eve, but its also Friday, which means its a Fossil Friday. I missed las week due to being sick. Today's video offering is from the first day of a long, multi-day fossil exploration trip in South Dakota.
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I know its not the most recent trip, but I finally completed the video for this annual trip to hunt for dino fossils in the Hell Creek fm of South Dakota. Next week I should have the video of the prep of the Neural arch and spines finished.
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Hi all, with Covid making it impossible to attend any shows here last year I was able to visit the Munich Show last weekend. Among others I’ve bought this tooth. Ive learned from you guys not to trust the ID done by the seller so after reading some posts here I doubt that the tooth is a ankylosaurus magniventris. To me it looks more like a Thescelosaurus. Am I correct with this opinion? Details provided by the seller: Hell Creek Formation North West South Dakota Thanks in advance for your expertise!
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Just returned from my fall collecting trip to South Dakota. Will focus on my finds and I've attached a couple of prior trips to see more of the area, fauna, finds and collecting gear. Spring 2021 http://www.thefossilforum.com/index.php?/topic/115998-spring-dinosaur-dig-in-south-dakota/ Fall 2020 http://www.thefossilforum.com/index.php?/topic/109554-collecting-trip-hell-creek-formation/#comments Before I get into my new finds here are some prepped items from my last two trips that I have yet to share A possible Troodontid metatarsal A very weird bone, showed Pete Larsen and he's leaning to a pathologic Digit III Edmontosaurus toe bone. Very odd bone. Good size An nice size Edmontosaurus cervical vertebra about 7.8" High and 13.5" wide Edmontosaurus, a big Chevron, 14.5" long Edmontosaurus, Metacarpal III - 10" Long I was cleaning this Edmontosaurus Digit IV -1 toe bone and a surprise hole popped up became more interesting as I continued clearing it. It has the outer shape and interior profile/curvature of a tyrannosaurid tooth. Is it predation ? I went to show it to Pete Larsen but he was at the Denver show.. Will see him at Tucson. There was no predation marks on the opposite side so not sure. The preservation is pretty solid. Edmontosaurus - Left Dentary about 23 inches long.
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My wife and I just got back from a three night trip to Hot Springs, South Dakota. Our mission was three fold. First, a visit to Mount Rushmore has been on our bucket list for several years. Second, I recently I’ve been in touch with Richard White who was previously the Director of the international wildlife museum in Tucson Arizona and most recently has become involved doing research out of the mammal lab at the Mammoth Site in Hot Springs. He has been studying Capybara and publishing papers for several years. After seeing pictures of the skull that I found on the Brazos River a few years ago, he contacted me oh to let me know he was interested in seeing the skull.
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This specimen was found north of Red Shirt, SD. Is this a bone fragment?
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This bone fragment was found east of Red Shirt, SD. Any ideas about the type of animal and bone?
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Finished my latest prep. Now, I realize that in the worlds of both commercial and academic paleo, this is a useless, junk fossil. Its an unassociated, partial in poor condition, and any final monetary value doesnt meet the time invested in the prep. However, its special for me in that its my first "wild" find. I hiked, explored, tracked the float, found the end of this in the face of a wall, then excavated it. I was hoping for a much more complete fossil, but this was it. It is highly fractured and deeply root rotted. But I carefully disassembled all its parts, cleaned them, consolidated them, reassembled into proper positions and finally repaired the gaps to strengthen it. Now, I've dug and prepped lots of fossils over the last 12 years, but all have come from sites someone else found. They did the leg work and established the quarry, I just dug in it. Nobody knew this was there until I found it. Im still hopeful theres more of the animal scattered behind it. An Ed. vert centrum washed out from a few feet away. Hopefully I'll get the chance to check the site again. Just a side comment... I hate prepping this type of fossil. I glued and consolidated this as I uncovered it, which also glues all the matrix in place. That helps prevent the fossil from collapsing into gravel en route home, but then I have to dissolve the glue and completely disassemble all the broken chunks, then pray I can put everything back where it belongs. anatomy and taphonomy. Every fossil tells a story and the following is my attempt at reading that tale. I found a great PDF article https://archives.palarch.nl/inde.../jvp/article/view/447/439 specifically about the pes of hadrosaurines. It would appear my fossil is the distal end of Metatarsal III, likely left side. The erosional break was at the point where MT-II and MT-IV were located, and the bone was pointing distally into the matrix, so no other metatarsal bones would have been remaining if deposited in articulation. Phalanges III was not found on excavation, although it is possible to still be in situ and just more separated than the distance I examined. However, the likely reality is that this indicates a disarticulated and isolated element. The measurement on the width is 160mm which would make it an adult, although not at the largest size. The fossil has a high degree of fracturing which is likely due to a combination of freeze/thaw cycles and plant root invasion. Beyond this, the fossil still has a mostly intact surface which says that it did not suffer long term surface weathering or osteophageous beetle predation. The in-situ damage was confined to the highest points, which shows it possibly suffered peri-depositional damage. The matrix was a loosely consolidated mudstone without associated gravels or stone inclusions, indicating a low energy environment such as a delta, marsh, or low flow river. Walter Stein believes the layer to be a continuation of a densely fossiliferous, multi-taxic bone bed discovered about 1/4 mile away. The fossil as I started prepping. After clearing off the matrix. distal end proximal end prepped and repaired
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So I bought this ammonite at a shop while I was on vacation but it didn't have the species/genus with it. So I would really like to know what the species is (if possible). Thanks in advance!
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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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Any ideas on which bone this is and who it belonged to?
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I have never found a jaw like this. The only thing I can find that is similar is tapir which would be pretty rare for this area. Found in south central South Dakota. Miocene
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Day 4 was a special treat! Neal Larson came to the field station to give a brief talk on Ammonites, Baculites, and the Pierre shale formation. Then we loaded up and went to hunt Neal's own site, and OMG what a site it is! The only description that came to mind was "an embarrassment of riches". From the instant we stepped out of our cars, we were walking on baculites! The ground was covered with them. It wasnt about being able to find, it was just a search for quality. Neal had a goal for this hunt, and that was to find a Baculites with the jaws still in the chamber. For all his hunting, he still did not have an example in his collection. Sure enough, the person who found the pachy dome the day before, found a bacy with jaws for Neal! Its not real clear in this pic, but this is Neal holding his new prize. I took pics of the baculites covering the ground, but it seems to have disappeared from my phone. I do have a pic of some as we were cleaning them last night. The 2 biggest are almost 2 foot long and had to be excavated. Even still in the matrix they are broken, so I will be doing some prep work on these. I also plan on polishing some of the small sections, and some only need some consolidate.
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For day 3, it was decided to go back to the Deers Ears butte. Everyone was sore and worn out from 2 days of hiking, so a chance to stay in a single spot and dig would be a chance to rest. My team went to the Tooth Draw quarry, the others went to other sites, including one new one. The day started pretty slow, but then mid afternoon my son uncovered a tooth (havent determined T.Rex or Nano). I was so proud of him, he did an expert job in recovery. The tip was broken insitu and could have been easily separated or lost, but he was slow, careful and judicious with the paleobond and got the tooth out whole. Now I need to find my photo scale to count serrations. This tooth has a lot of wear but there should be enough left to make a good count. Within half an hour, 2 more Rex teeth were uncovered by other diggers. Another storm was building and there was worry we would have to jump and run again, so those with finds were trying to get them out quickly. I began packing up my gear but the storm blew past us to the south, so we went back to digging. That was when my son found a Pachycephalosaur hornlet! It was kind of funny because at first it looked like just another BOB, but as my son scraped away some more matrix from it he said "Its got a weird wrinkled texture." When I looked at it close I yelled " I know what that is!!" For those unfamiliar, Pachy material is VERY limited, so this piece is going to be made available for research and study. As rare as this little find was, it would be dwarfed by a find from another group that day. Someone found a Pachy skull dome at one of the new sites! I was hoping Walter would be so excited that he would prep it out that night, but he had other things that needed attention, so we only got to see the dome. Any attached hornlets were still in the matrix block. Hoping that he posts some prepped pics soon! So 2 more good finds from my son, but I struck out this day.
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