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Found 141 results

  1. Rock Bar Find

    This was found on a rock bar on the Des Moines River near Boone, Iowa, USA. The piece is approximately 4.2x6x4
  2. Iowa Surface Find

    This piece was found while surface hunting in a field near Boone, Iowa, USA, It measures approx. 6x3x2 cm
  3. Iowa Find

    This was found on a rock bar on the Des Moines River near Boone, Iowa, USA. Since you can't see the ruler very well in most of these pictures the piece is approximately 6x5x2.5 cm
  4. Lycopod I think but not sure

    Hi, I found this in Pensylvannian glacial till around a reservoir. It’s about 12” long by 5” in diameter. There are coal seams nearby. I think it’s a lycopod part of some kind but it doesn’t match most of the pics I’ve seen. Can anyone tell me more? I’m curious about the layered appearance. I don’t think it was in its original location as it was stacked on a big rock with other specimens. I left it in place due to regulations. Would have liked to keep it! Thanks!
  5. Crinoid

    Any clues to the genus of these crinoids? From Augusta, Iowa.
  6. Jaw identification

    I recently bought this jaw and was wondering if someone can shed some light on it. Seller gave some info on it, but when I received it it’s a little different than expected. Seller states it was found in Iowa. It also seems very light if it’s fossilized, I have no experience with fossil bone so I’m not sure what to expect. Any help is appreciated. Thanks
  7. Teeth

    I know these are mammal teeth. I'm pretty convinced that at least the one on the left is a bison but would like to confirm. Would also like a rough estimate of age of possible.
  8. Placoderm Fish with Fin?

    I found this fossil in Devonian rock in Johnson County, Iowa. I think it is a fossil of a placoderm fish, and I think it has a "fin" next to the quarter in the photo. The fin would be coming out of the placoderm plate at a perpendicular angle, which would make sense, but I have never found a fin before. I will attach a close-up photo of the "fin" below. Am I on the right track or is this something else? Thank you! Ben
  9. A few weeks ago, just when we were inundated with the spring muddy season, I stopped at a site that features Decorah Shale with a little Platteville mixed in. If you haven't collected in the Decorah Shale, let me say it stays MUDDY even in a drought!! The site had been worked over for a finish grade. This means the site will soon be lost to vegetative overgrowth. So I proceeded to collect a 5 gallon bucket of mucky matrix to clean and examine at home, in case the weeds invade quickly. Here are some select finds from that bucket.
  10. Trilobite IDs

    I discovered these two rollers in Fayette County , Iowa in the lower Maquoketa, Ordovician. This location is well known for Anatophrus borreaus trilobites. Though the next lower formation changes abruptly to almost 100% Isotelus. Did I find one of each? Rollers make IDs tough on me. Then as long as you "trilo" experts are looking, can you ID the trilo-bits 1,2 and 3 in the next picture? Thanks for helping!!
  11. Due to an upcoming order from our Governor to stay at home, I took the opportunity to fossil hunt last Sunday afternoon before it begins. The ground was white with an unexpected snowfall overnight when I left the house but soon melted. My goal was to look at road cuts for rock slides from the winter's freeze thaw cycle. Digging and splitting would be tough with frost still in the ground. The first spots searched were Ordovician, Galena. Here are a few representative fossils from the Galena of SE Minnesota: From there, I slipped over the border into Iowa to look at Ordovician, Maquoketa. A sluffed hillside provided me with some rock that I wasn't that familiar with. Here are some finds: The first picture is almost clay like, different than the normal Maquoketa that I am used to.
  12. Sloth Jaw?

    My wife found this jaw bone on a river sand bar in central Iowa last fall. I think it is a sloth jaw but not certain. The smallish size is what gives me a little bit of doubt. I have not found anything else other than a sloth that fits. Am I missing something? Thank you!
  13. Collected in northeast Iowa which is part of the Driftless, very rugged with lots of streams and flooding that cut away the earth. Most fossils here are Ordovician. Most are limestone of the Galena Formation. HOWEVER, this area is a hotbed for mammoth and mastodon teeth and bone finds that the locals call "dinosaur bones". That said, there is an area recently rumored to have a lot of "dinosaur bones" just 30 miles southeast east of Spring Valley, MN on the edge of Iowa. No one wants to talk about it for fear the government is going to come and confiscate their finds. Posting for a friend, so not my find. This is truly an intriguing rock. Spherical, I want to say "cherty" like a possible internal mold, the straight line and the way it is cracking almost like shell on the outside is also interesting. This could just be a very cool rock or...??? He sent me pictures and I am posting it in hopes that someone has seen something like this before. Since I am not very familiar with fossilized bone except for the real dino bones I have from the Hell Creek Formation, I would appreciate any sharing of knowledge that you guys and gals may have in what to look for in that area - @old dead things 1 2 3 4 5
  14. Hello fossil folks! I am going through my bone collection from last season and would like to identify the five bones pictured. The most interesting one to me is #5 as I believe it is too long to be a horse. Perhaps camel? All of these bones were collected from a river in central Iowa. So far, my wife and I have found prehistoric bison, horse, sloth, mastodon and mammoth bones from the pleistocene period. I am pretty sure these are either Metacarpal or Metatarsal bones. Sorry but I do not have a metric scale for the pictures. I have labeled the bones 1 thru 5 and noted each bone length. Thank you!
  15. "Maple Mill Formation near Kalona, Iowa." came up in a topic about Devonian Shark's teeth. It is a micro matrix type of material that I am interested in collecting next summer. I hunt just north of Kalona anyways!!! Has anyone ever collected this matrix or knows the location of the Kalona Clay Pit?? All of my research reveals only vague references and looking at google maps shows little exposure of rock around Kalona. All help would be greatly appreciated. Thanks, Mike
  16. Mystery Fossil From The Devonian

    This fossil was found on a recent collecting trip to a quarry near Iowa City. It is from the Devonian. As you can see, it is quite small with relatively large spines. My best guess is some type of brachiopod. I am hoping someone on the forum might know what it is.
  17. Crinoid#1 ID help needed

    Hey group. I hope you're not getting tired of answering all my questions. Because...... I am requesting your expertise in a few more crinoid identifications. The information (as listed) I have on this specimen is it a Devonian Crinoid Flower from an estate sale collection from the early 1960's. It's listed(?) find location is Iowa, USA. It was originally purchased from Ralph E, Mueller and Son Phoenix, AZ in the early 1960's and was displayed in their store for several years until being sold. Help please!
  18. Fossilized Thumbtack

    Here is a piece I saved on a recent excursion to the Devonian Cedar Valley Formation of Iowa. It looks like a thumbtack!!! I am guessing a tentaculites abutting an ostrocod, but would like other opinions. Thanks, Mike
  19. Any sites in eastern Iowa

    Any known sites near Davenport Iowa or Buffalo Iowa?
  20. Iowa Mystery Bone ID

    Need help identifying what appears to be a tooth or bone of some sort. Found in the far northeastern part of Iowa (almost South Dakota) about 8 inches deep in the sandy shore of the Big Sioux River. The left and right side appear to be very slightly broken off, as well as what I would assume to be the bottom.
  21. Pliocene river find

    When I picked up this bone and pieces my thought was bison. Reviewing it I’m not so sure, so will I defer to the experts! I was disappointed though to see this had been run over by an ATV on the sand bar... also sad to see really how polluted our water ways are...
  22. Very Large Gastropod

    This gastropod was collected about a month ago in Coralville Iowa from the Cedar Valley Formation of the Devonian. I have pieced it and puttied it back together. My attempts at IDing have failed. I don't think it is a maclurite. Any experts on the Devonian life of Iowa out there??
  23. Fossil Plate? Collection From Uncle

    Another specimen given to me by my uncle over 30 years ago. Never really looked at these until recently. Any insight would be great! I have no idea. Thanks!' Dan
  24. Crinoid Fossil Attempt

    Recently, the opportunity presented itself to me to hunt for crinoids in the Burlington Formation of Des Moines County, Iowa. It was not a scheduled trip, but one that occurred because I in the right place but the wrong time. My mistake gave me a full free day to hunt fossils in Iowa (what a bummer!!) , so I headed out to look for some crinoids. The Burlington is so different than any rock formation that I usually hunt. It is made up of 90% crinoidal remains. It must have been a spectacular ocean floor to see!! I envision it to have been an undersea garden. Fossils other than crinoids do show themselves and I did pick up a few. First some brachiopods: A few corals. At least I think the larger one looks like coral. My doubts come due to its thinness. Trilobites are uncommon in the Burlington. This is the first trilo-bit I have ever found.
  25. Help!!! I lost a good reference for IDing Burlington limestone crinoids and blastoids. I spent all last night fruitlessly looking for it. Does anyone have a suggestion for a good reference??? Mike
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