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  1. I am pretty sure this is Aulopora. My understanding is this coral grew on hard substrates (rocks, brachiopods, other corals, etc). Nothing in my sample shows evidence of such a material to anchor on. Can this coral exist free standing or have I misidentified it?
  2. connorp

    Iowa Devonian Trip

    A couple months ago I took a trip to collect in the Middle Devonian of Iowa. It was a pretty good trip. I found some nice stuff and chatted with some very nice folks. Here are a couple of my finds. A partial ptyctodont tooth plate A neat sponge. I believe the genus is Astraeospongia but please correct me if I'm wrong. I was told these are rare from this area. A partial nautiloid And a partial Eldredgeops norwoodensis
  3. Ive got some business in Coralville, Iowa so I did a walk along the river whilst I had some time to kill. Fossil corals everywhere which is no surprise as that’s where the name comes from. Here’s two. The walk along the Iowa River was really peaceful. I didn’t see a soul.
  4. Matterialpossesion

    Pleistocene Fossils Need too ID

    I need help to identify these fossils I found in the Nishnabotna River at Botna Bend park in Iowa. What animals and what bones they are, thank you.
  5. Notidanodon

    Devonian holochephali tooth?

    Hi guys what do you think of this from the Devonian of Iowa I thought holocephali
  6. Tales From the Shale

    Iowa Trip 09/03/2022

    Traveled to Iowa for a second time this weekend. My goal was the various molt beds of Isotelus in Fayette county. Here are most of the finds. While there I stumbled upon a local hunter who was nice enough to give me all of his hunting spots. He seemed to be as surprised as I was to find someone else in the field. A few isolated hypostomes here, and some others in various hashplates. Mixtures of pygidiums and cephalon structures. I think an eye can be seen in each of these images. Some decent sized pygidiums. They were the most common part of the
  7. sulla011

    What is this

    Found this by river in Iowa. Anybody know what it could be?
  8. Jbenton

    Huge coral? Need help with ID

    Hi Found in eastern Iowa, near coralville. I assume it’s coral but what kind and what era are these from? Dimensions: 6” long by 5” wide. Any ideas?
  9. Tales From the Shale

    Isotelus Beds of Iowa

    I've been doing some research for a couples weeks about the Isotelus beds located over Fayette county. It's been rather difficult to locate a specific site, so I'm asking if anyone who's been down there has any specifics when trying to locate them. I know of the Turkey river, but I'm four hours away so I just want to make sure I have a clear idea. Thanks, Jonah
  10. Tales From the Shale

    Graf Iowa Score

    State: Iowa Location: Graf Period: Ordovician Cruised over to Iowa for the first time in years last weekend. I went to observe and scout the famous cephalopod beds in Graf. I have to say, it was everything I had hoped it would be. The wall in which the RC was located upon, was a few hundred meters in length, and contained a few layers, dominated by dolostone, limestone and towards the bottom, phosphatic shales. I ended up finding graptolites too, which I wanted to say were Orthograptus? However I didn't bother to keep any. These were most of my finds, minus the plate
  11. My boyfriend and I were walking along the railroad tracks down by the Mississippi river in Davenport,Iowa when my boyfriend happened to look down and see this rock or fossil whatever it may be were curious to find out we done some google lens searches a got a couple ideas but would like some help figuring it out
  12. I usually avoid purchasing fossils with little locality information, but this was too neat a specimen to pass up. The only information the seller had was that this trilobite was supposedly collected near Buffalo, Iowa. It looks like a Carboniferous trilobite to me, and the bedrock around Buffalo is Devonian and Pennsylvanian, hence I'm leaning towards this being a Pennsylvanian trilobite. I was hoping the knowledgeable trilobite folks here might be able to help me identify this trilobite (@Kane @piranha). I was also hoping to narrow down a possible formation/locality of origin. The only r
  13. In the summer of 2020 jpc and I had planned to get together in Eastern Wyoming to collect. That trip was unfortunately aborted by the coronavirus outbreak that year. This year, that conversation resumed and a new plan for a three day excursion in June emerged. I decided to make it a two week long car trip, driving all the way from New York, a longer car trip than any I've made in the past 25 years. That would afford me the opportunity to stop at some other sites on the way there and back, plus see some family. Another big reason for driving was an opportunity to visit and collect at the Big Ce
  14. Hi! Back when I was 10-12 I was hiking in Iowa when I found this "dinosaur tooth rock", which I have carried around for almost 25 years. I have always wondered if it was part of a mammoth tusk, a tooth, or maybe even a Native American whetstone. Or possibly just a weird rock? Any ideas? Thanks so much for any input!! Specs: Weighs = 2 lbs Length = 7 inches Circumference = 8.75 inches Height = 2 inches
  15. tarinfeinstein

    Tusk or Stone Carving Tool? Found in Eastern Iowa 1995

    Hi! I found this in Vinton/Shellsburg, Iowa in the mid-90's. I was exploring a wooded area as a kid with my family. I believe we were hiking by some sort of river. This was partially buried in the ground. I have always been a rock collector so I took it home and have had it ever since! I've always called it my "dinosaur tooth rock". It's definitely not a dinosaur tooth, but would love if anyone had some insight!! Thank you!!
  16. sigint_devildog

    Possible Lycopod ID

    I’m looking for help identifying this find. It is a creek find from Van Buren county in Iowa. Every fossil I’ve ever found in Iowa is aquatic (corals, crinoid, brachiopods, etc), but this doesn’t look like anything I’ve ever found. It looks like fossils I’ve seen in collections of lycopodium bark. There’s even what appears to be a stem-like core in the “center”. Any help in identification would be much appreciated
  17. I just processed my finds from the Burlington Limestone of southern Iowa. A few finds are still not identified. My hope is that someone can recognize these specimens. First up is a find that I thought was a crinoid calyx when found. But after a good cleaning, I am wondering if it is a blastoid. The next identification needed involves these three specimens that I think are crinoid calyxes. They are markedly larger than the typical crinoid calyxes I find in this formation. If so, what species????
  18. It has become a yearly ritual to slip away to Southern Iowa to collect geodes. When in the area, I take an additional afternoon to play around in the Burlington limestone looking for crinoids but gladly accepting whatever comes my way. Here are some of my finds. Usually I label the pictures, but due to time constrains, I am posting unlabeled pictures this time. I threw in a piece of styolith since I have seen a few topics where there was questions about what it was. Eutrochocrinus christyi Azygocrinus rotundus
  19. Over the weekend I took a quick two day scouting trip up into the Ordovician of Iowa and Minnesota. One of the around dozen sites I visited was a roadcut in Winneshiek County, Iowa in the Galena Group, probably Dunleith Formation. I was in a bit of a rush and only collected here for 20 minutes or so, but it seems like a very productive site that I will certainly visit again. A three-dimensional graptolite (Diplograptus?) Liospira sp. I picked this piece up for the nice cephalon (Calyptaulax I think), and was pleasantly surprised to find at least
  20. saidthegirl

    How to prep coral colony?

    I would greatly appreciate any advice on how to clean/prep this coral colony. It was found in a shale pit in northern Iowa-from the Lime Creek formation. As you can see, there’s quite a bit still clinging to it. Is it safe to clean with some water and a toothbrush? The underside seems to have crystallized(?). Very new to fossil collecting and subsequent preparation. Thank you in advance! If anyone has a guess at ID please let me know as well.
  21. minnbuckeye

    Unknown Echinoderm??

    This was discovered yesterday on an excursion into Iowa's Ordovician Decorah Shale. Initially I thought a star shaped crinoid columnal but on close examination, no lumen can be seen. The specimen is about 5 mm in diameter. @crinus
  22. Headed to Sioux Falls South Dakota next week. I know it is not the glamourous end of the state but was wondering if there were places to fossil hunt in the area or within a few hour drive? Nick
  23. I collected this piece of placoderm bone a while ago from the Cedar Valley Formation (Middle Devonian) in Iowa. Most bits I've found are just "indeterminate bone bits", but this piece has enough structure that I am hopeful it can be identified to a specific part of the anatomy. It superficially reminds me of a cranial element posted by @Peat Burns a while ago from the Silica Shale in Ohio. However I am too unfamiliar with placoderms to say exactly where this piece of bone might have come from, and I was hoping a forum member might have some input. Thanks fo
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