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Found 112 results

  1. ID on Micro Hell Creek Fm - Marine

    I was going through some matrix, from my last dinosaur dig trip, using a microscope to look for anything small. In that process I found something real small a micro. Its slightly larger than 1 mm. One of the smallest fossils I've ever found. Cephalic hook, dermal denticle or something else? Hell Creek Formation, South Dakota Any input would be appreciated. Sorry its the best picture I can take with my digital scope. Two images with a little different contrast. Thank you for looking.
  2. Unknown Owner of this Bone

    A number of years ago I acquired this bone from a fossil dealer near the Badlands of South Dakota. I'm looking to see if someone can ID this piece. I know that it is not Oligocene in age, and am not sure where he got it from.
  3. I enjoy reading old books. My grandfather worked for some years as a type setter and book binder and so I've inherited a number of great old reads from him. I'm currently working my way through A Treasury of Science from 1943 which is a compendium of older writings of varying ages. Similar to the nostalgia of watching old movies (or more like curiosity of watching movies that pre-date me) I find it interesting to read about the current level knowledge that is captured in those pages when reading from a vantage point some distance in the future (hopefully with an expanded view on the subject material). What Darwin labored with in chapter after chapter of his On the Origin of Species can now be succinctly stated in a few paragraphs in a Wikipedia article. Reading older or even antiquarian books makes me feel like a time traveler from the future (which, in fact, is pretty much what I am--relatively speaking). In a chapter of the treasury I'm currently reading called Flowering Earth, the author (Donald Culross Peattie) wrote in 1939 about the history of plant life on the planet. From the first protozoans to gain energy from chlorophyll through the ages of stromatolites, the fern and lycopod forests that gave us our coal, the early conifers including the Sequoia that shared the planet with dinosaurs, the cycads, and finally angiosperms and the rise of the modern plants. Quite an enjoyable read with the more eloquent and flowery (no pun intended) writing style of the 1930s. Here is a page on cycads that I read last night: What caught my eye while reading this was, of course, the existence of the Cycad National Monument. Why hadn't I heard of this before? Sure, there are infinitely more things that I'm unaware of than what I can hold in my brain at one time but surely I would have come across this before. Last night I made note to formally put this place on my short list of places to visit in South Dakota (there are apparently a couple obscure modest size sculptures to see there as well ). This morning while researching the Fossil Cycad National Monument I was disheartened to read that I'd missed my chance at seeing it by over half a century. It turns out that without proper protection that Professor G. R. Wieland's efforts to protect this outcropping of important Cretaceous cycad fossils were in vain. Vandals slowly stripped all the remaining visible fossils from this location and the national monument status was withdrawn in 1957. https://en.wikipedia.org/wiki/Fossil_Cycad_National_Monument In an effort to use this sad state of affairs as an example it has become a cautionary tale to inspire existing notable places to better protect their precious treasures. https://www.npca.org/articles/1008-gone-but-not-forgotten http://nature.nps.gov/geology/nationalfossilday/fossil_cycad.cfm http://www.nationalparkstraveler.com/2008/08/pruning-parks-delisted-over-half-century-ago-fossil-cycad-national-monument-1922-1956-cautionary-tal2805 I believe our membership has more respect for fossils and would never have taken part in this national monument's decimation and dissolution so I post this here mainly because I found it interesting (and sad) and because this tale seems to have faded from popular memory through the years. It provides a good example as to why some places require management and protection--real protection (not just a proclamation by the President). Cheers. -Ken
  4. I bought this opalized ammonite last month from a gentleman in Westerly, Rhode Island. Here's where he got it...
  5. Stylemys nebrascensis in situ

    From the album Fossil Discoveries

    I wanted to capture an angle that evoked the feeling of encountering this animal's fossilized remains where it may have actually died.

    © &copy

  6. Stylemys nebrascensis in situ

    From the album Fossil Discoveries

    I visited the Badlands National Park in spring 2016 and photographed this badly weathered fossil turtle where it died some 30 million years ago. I subsequently informed a park ranger where I had seen the specimen.

    © &copy

  7. Sphenodiscus 10

    From the album Sphenodiscus

  8. Sphenodiscus 8

    From the album Sphenodiscus

  9. Sphenodiscus 6

    From the album Sphenodiscus

  10. Sphenodiscus 5

    From the album Sphenodiscus

  11. Sphenodiscus 3

    From the album Sphenodiscus

  12. Sphenodiscus 1

    From the album Sphenodiscus

  13. This is from Western South Dakota. It is definitely a bone. It is super heavy and it feels like weighs well over 20 lbs. The "tip" has a hole going into the rest cavity of the bone that is all agatized. My foot in the photos is a size 12 men's to give a perspective on the size of it. What kind bone is it? And also what might it be worth?
  14. Bone ID? Upper Cretaceous

    Hello again, I've posted this fossil before on here a couple weeks back, but I did some more uncovering of the fossil and made a few additions from rock fragments I found surrounding the fossil, so it is more complete now. It is from the fox hills formation in South Dakota, with the depositional environment being lagoonal. Professional papers collecting samples from this formation list shark teeth, mosasaur teeth, bivalves, as well as dinosaur bone fragments being found here. I think we can safely rule out bivalves though haha. The brown end of the fossil looks to be a jointed end of the bone. The black "fracture" above my thumb in the first pic looks like a bone suture, something that occurs only in skulls of vertebrates. I'm no expert on sutures but this "crack" looks like it didn't occur after death of the animal. I haven't had this theory confirmed though. Thanks again!
  15. Fox Hills Large Concretion

    Broke open a large concretion, here's what was inside. I really need to learn proper prepping technique, smash and look probably not the best way to reveal specimens. Any more experienced with suggestions for SD Fox Hills prepping?
  16. 2 Cretaceous Teeth For Id

    I have these two teeth from the SD matrix that need IDs please.
  17. Help With Oligocene Fossils

    Hi everyone. I am new to the forum and am hoping for some help identifying several oligocene/eocene vertebrate fossils. First is a small jaw section from the Brule or Chadron formation (from dry stream bed so not exactly sure) in northwest Nebraska. It looks like an oreodont to me but it seems too small. The second is a moderately large vertebra from the same location. Here I was thinking it looks like a titanothere vertebra but again it seems too small. Third is a scapula I think but from what I have not idea, also from the Nebraska location. Last is a tooth fragment from the Brule formation in South Dakota. I presume this is a partial canine of some sort but from what I'm not sure. Any input would be greatly appreciated. Thanks!
  18. My First Id Post, Ammonite Id Help Please

    From central South Dakota, near the Missouri River. I'll try to get better images if necessary. Thanks!
  19. Oreodont Bones

    From the album Jerry's Really Old Stuff

    Assortment of bones from the White River Formation, South Dakota. Includes, Oreodont femur, upper part of humerous, mandible, articulated foot bones carpals and metacarpals and articulated vertebrae in matrix. Also includes complete femur of paleolagus (rabbit), Oligocene era.
  20. Oreodont and hyracodon, 3

    From the album Jerry's Really Old Stuff

    Close up of oreodont humerous, oreodont and hyracodon jaw sections with teeth, White River Formation, South Dakota Oligocene