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From the album: Mississippian fossils
A nice calyx I'm working on cleaning up.-
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From the album: Mississippian fossils
A common calyx I recently cleaned.-
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From the album: Mississippian fossils
A nice little calyx I finished cleaning.-
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From the album: Mississippian fossils
Another large Eutrochocrinus calyx I cleaned.-
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From the album: Mississippian fossils
A large Uperocrinus pyriformis calyx I cleaned.-
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From the album: Mississippian fossils
A large Eutrochocrinus christyi calyx I cleaned.-
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From the album: Mississippian fossils
A nice crinoid I found on my creek walk today. I will need to do some more cleaning to determine a proper ID.- 1 comment
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From the album: Mississippian fossils
A nice Deltodus toothplate I found on my hike through a creek today.-
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From the album: Mississippian fossils
A beautiful Dorycrinus crinoid calyx I found while out setting fish lines. This specimen will be very nice after preparation.-
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Hello! I am very curious about this find. Like the title says, this was found in mid-Missouri in a creek bed. There are a few hexagon patterns I can see that are connected but I truly have no idea what I'm looking at. Any ideas?
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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 Uperocrinus Exochops pygidiums Amplexus coral Caninia Rugosa Coral Platycrinus calyx plates Dorycrinus missouriensis calyx arms Uperocrinus Platycrinus calyx
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Mississippian Fish Teeth #5 Cladodus and Stethacanthus
minnbuckeye posted a topic in Fossil Hunting Trips
Cladodus and Stethacanthus are more typical of modern day shark teeth. As can be seen, the tips are not always present, some destroyed in prep, but many tips severed prior to fossilization. Cladodus possesses a straight shaft while Stethacantus is S shaped.- 4 replies
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Chomatodus will be today's fish of the day. It is a Petalodont, similar to a modern day Ghost Shark. My understanding is that a fused upper jaw leaves Chomatodus as "shark like", not a true shark. From my experience its teeth are the most frequently found in the Burlington Formation.
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I am in the process of identifying the Chondrichthyan teeth that I have been extracting from Burlington Limestone collected this summer. Here are my most confusing teeth that hopefully can receive identification from our forum experts. 1. 2. 3. Possibly a dermal denticle instead of a tooth? 4. 5 .
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I think this calyx I found today and prepped (on the left) is a Macrocrinus konincki, but I've only found one other one. I typically find Macrocrinus verneuilianus (on the right), so anyone familiar with crinoids please let me know what you think! Thanks, Jackson
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So to start the month of May off, I decided to go out and spend my Saturday fossil hunting. The water has been really high lately, so that's put a delay on my usual weekly walks. I decided to go to my favorite creek that has exposed Burlington Formation chert. It doesn't look like much fun, but I sure enjoy walking it. The water was higher than I wanted, but it was searchable so I spent about 3 hours here, and didn't really find all that much today worth taking home here. Most of the good stuff I've found there requires splitting chert, which I didn't partake in today. I only took two spiriferid brachiopods home, although one did have some druzy brachidium perserved which was nice. Here are those two clean up: A nice spiriferid internal mold Lovely golden spirals After leaving the creek, I decided to go by my favorite arm of Truman Lake, and boy was it poppin today! Out of the 20 vehicles parked there, of course I was the only one fossil hunting. A lot of the nice crinoidal layer was unfortunately still submerged underwater, so I spent my focus on where the weathered chert layer met the top of the encrinite layer. Twenty minutes of walking, and I was there. This was all underwater for about the past month, so I was very excited to start my search. I believe this is my first Burlington Formation hunt where I don't have any nice crinoids to share, as it ended up being the day of the Deltodus. I remembered to take some in-situ shots of some too! The first I found was very hard to miss due to the color. A big, very fresh find! The second find wasn't so lucky. Only a partial, which is still pretty rare. These porous toothplates don't last long to the elements. Who took the rest of it, the bug there or the weather? And another big one! Feel free to try and find the next few in the in-situ photos! They just kept popping up! A smaller partial, but still nice in my book. I'll admit I got lucky on this next one. The bottom of that toothplate was caked in some red muddy clay. If I didn't think to flip that one over, I would've missed it. The shape looked odd though, so I did. The clay is annoying! If you thought that's all I'd find, think again! Here are a few other goodies I grabbed. A nice platyceras gastropod. Looks like it will prep out nice. A nice terebratulid brachiopod plate. The one in the center has its brachial apparatus (small loop) preserved. Very nice! (Borat voice)! Should prep out to be amazing if the loop is perserved in the other brachiopod. Funny enough the only crinoid I found was a small steinkern from the chert layer that was almost about to pop out of the rock. I picked it up and dropped the piece, and out came the steinkern. As I went to take a photo of it, my keen eye noticed something in the background of the shot. A beautiful Burlington arrowhead! I picked up that treat, and wrapped it up immediately. As I thought about all the great things I had found today, I decided that was enough for today and it was time to head back to the car. Cleaned up finds will follow shortly!
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Hey there, I cannot find anything in my literature/ books on Burlington Formation straparolus gastropod IDs. I can confirm this is from encrinite Burlington Formation limestone, Henry County, one of my sweet spots. It is the first complete one to date I've found there, and I would like to have a more precise label for my first complete straparolus sp. fossil if possible. I can glue/ prep the specimen if needed for an ID, but I would need probably 2 weeks time for that. Thanks for any leads- Jackson G
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I had some spare time this past weekend, and a fossil hunt sounded nice. Bad weather had made that impossible the previous month. The weather was great out finally, so I went out Sunday (3/7/2021) to good old Truman Lake to look for Burlington Formation crinoids. I mainly just wanted to find and keep nicer, intact crinoids that day. It's a good walk to the crinoid hunting grounds from my car, and there is fossiliferous chert material along the way. I decided to split one chunk of chert, which contained only one single platyceras gastropod steinkern. After finishing work on it, I hid the snail along the trail behind a tree because it was to delicate to carry along. I actually ended up forgetting it, and will have to retrieve it next weekend. Once I got done walking and hit the encrinite rock, I decided to hunker down and look for recently fallen debris. Within 5 minutes I found my nice first possible complete calyx. Only prep would tell if this was complete, but it was worth throwing in the backpack. Looking low was paying off, because 3 feet away and right where the water level dropped was another one. I could tell right off the bat it was an Azygocrinus rotundus. It looked complete, but being lodged upright and inbetween two more pieces of rock, it was almost guaranteed to either be missing plates or extremely weathered. It was weathered, but actually better than I had thought! As I kept going, I kept flipping rock. Its always good to look at the underside of fossiliferous rock, because I've found some nice pieces that way. The next find was found doing just that, and looked to be a complete Macrocrinus verneuilianus. This is what I saw before flipping it over. And the backside after some rinsing in the lake. After throwing that in the backpack, I kept scrounging. Macrocrinus was the most common find of the day, and I found another within minutes. This one was buried in some sediment on a bigger chunk of rock. Can you find it? It will definitely clean up well. I spent another hour or so looking around and also managed to find a nice Uperocrinus pyriformis crinoid and another partial Macrocrinus verneuilianus calyx, but I didn't get pictures of those in the field. I cleaned up everything with soap and water when I got home, but I only had time to prep one crinoid and partially prep another one. Well, heres the calyxs cleaned up. Uperocrinus pyriformis Macrocrinus verneuilianus #1 (first crinoid find after final prep) macrocrinus verneuilianus #2 Macrocrinus verneuilianus #3 Azygocrinus rotundus Macrocrinus verneuilianus #4 And why not end on a brachiopod! Thanks for reading.
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Well I have been off of work this past week, and I start back this following Monday. With some of my extra time I've had, I've started work on prepping/ repairing some of my bulk Burlington crinoids that have just been sitting around. All of these calyxs are in different stages of completion, due to me always hoping from one to the other. Starting with one of my favorite species, Azygocrinus rotundus. This piece is mostly completed, I just need to finish working the matrix to however I'd like it. Next we have a mostly complete Uperocrinus pyriformis. When working this out of the tall wall of limestone it came out clean, but in two pieces. Repaired I then flipped it and prepped from the other side. I estimated I'm 70% finished with this one, as I'll do minimal work to the the matrix itself. Will look great when done and sit upright like the second picture below shows. I'll update the thread when finished. Second Uperocrinus Next is Macrocrinus verneuilianus. Found this one earlier on this week when I went to do recon in a pretty random abandoned field. I'm taking my time with this one, and have only put about 35 minutes of scribe work in so far. Believe it or not I wasn't even sure if this was a calyx when I brought it home, as the calyx had one arm hole exposed from the limestone with the rest buried when found. Here is another that needs repair before any prep. On the journey home, this piece fell apart in my backpack. A total shame as there is a Teleiocrinus umbrosus (only my 2nd ever found) with a Macrocrinus verneuilianus right below it. The piece fell apart clean and will hopefully look good one day. This will be a nightmare (see crack running through middle of calyx?) to finish. And I know this isn't a crinoid but I found it earlier this week along with the Macrocrinus shown earlier when I was scouting a new overgrown field, and felt it was worth sharing too. In the chert layer I ended up finding and working out a really nice terebratulid brach with its inner support loop. Took 4 precise splits, all at different angles to reveal all its inner glory. Nerve racking to say the least. It's hard to see the features of the loop due to the heavy coat of druzy. Heres a very useful reference and pic for those of you who don't understand what it is you are looking at. It's pretty rare the innards preserved within the brachiopod in this "geodic" way. http://palaeos.com/metazoa/brachiopoda/brachiopoda.html Update to first macrocrinus
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Been staying busy lately, but I had some spare time this weekend so I worked a stockpiled block of chert I had in the garage. I took this block home specifically because of the exposed partial brach sticking out of the hard chert. To reduce the size of the rock, I first split it in half which ended up being a lucky split as it didn't damage the brachiopod fossil or fracture the chert in a challenging way. After splitting the chert, I removed the steinkern from the rock and picked away the intact half of the shell not exposed with a sharp needle in hopes of some golden spirals. Easy to see which side was exposed from its rock tomb. Fortunately for me the half hidden inside the chert was complete, unfortunately though the half exposed from the chert was infilled and weathered away.
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Burlington crinoid calyx ID second opinion: Agaricocrinus planoconvexus?
Jackson g posted a topic in Fossil ID
For those of you familiar with crinoids of the Burlington Formation, (Mississippian) I would like to get a second opinion. This calyx is partial, but I believe there is enough present to confirm my guess for ID as Agaricocrinus planoconvexus? I haven't collected even a partial of this species yet, so confirmation would be exciting. Thanks for your thoughts, Jackson Top Bottom Side shots This other one is probably complete. If it takes me prepping this one to get a 100% confirmation, please let me know and I will do so. (Would rather keep it to prep later)- 3 replies
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While I was out today I found a nice crinoid in a big chunk of crinoidal limestone. I decided to take one risky wack to the opposing side of the calyx with my Estwing at the rock, which ended up working out well. Most of the time I wouldn't bother because it never goes this smoothly, but I have a lot of this species so I didn't mind if I busted it. The circular calyx is very reminiscent of Azygocrinus. After splitting the rock, I took the half home with the crinoid. The rest of the work was done with airscribe. I'd say it came out pretty well. Once I had the size of the piece down, I worked around to keep the piece and calyx intact so it could be removed/replaced back in its calcitic rocky home.
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Hello, I found this yesterday while out searching for crinoids. It's a piece of chert with some weird cylinder shaped thing on the right, and it has a groove that runs through the center. Over a year back I found the exact same thing, except that one was much longer being probably over a foot long in length and again ontop a slab of chert. The one i found yesterday was around 4 to 5 inches I would guesstimate. I've done a lot of fossil searching, and this is only the second time I've ran into whatever this is. Is it even a fossil? Reluctantly, I didn't take either one home on either occasion due to my lack of knowledge on the piece. Would welcome any guess, thanks!
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Another search for Burlington Formation crinoid fossils
Jackson g posted a topic in Fossil Hunting Trips
Today's the first nice day we've had all week here, and on top of that lucky I got the rest of the week off of work. I decided to go out and search for crinoids for a few hours. Last time I went out I did recon on a favorite spot of mine, and I would say that effort paid off today. I ended up hitting a new section at the area that is usually underwater. Well anyway, heres the finds. Only about half are cleaned up. Starting with Azygocrinus rotundus Macrocrinus verneuilianus Uperocrinus pyriformis Actinocrinites multiradiatus Eutrochocrinus christyi Crinoid calyx (chert layer, unidentifiable) Uperocrinus sp? I also found a very unusual blastoid steinkern with an unusually long thin body. It's from Burlington chert, and I believe it to be a Metablastus lineatus steinkern. Will never know though. Well that's all I dragged home today. Hope you all have had a great Thanksgiving today if you celebrate it.- 7 replies
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