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  1. Hi there. I found this on a field trip to a private quarry in Midlothian , TX (just south of Dallas). It was in limestone / shale in the ATCO formation, where there’s lots of shark teeth and fish bones. I’m pretty sure it’s been compressed as most of the shark spines I’ve seen are much more round and this is pretty oval shaped. Does anyone have any guesses as to species? Thanks in advance!
  2. Well, you have probably already seen a few posts about the Dallas Paleontological Society's field trip to Ash Grove Quarry in Midlothian Texas. And Here's ANOTHER ONE! As it turns out, quite a few of us went on the same field trip but DIDN'T REALIZE WE WERE ALL ON THE SAME FIELD TRIP. That's what happens when you are mostly online friends and havn't actually met in real life! That and there were 50 people on the field trip....but it's a big quarry! Sorry I missed connecting in real life with @EPIKLULSXDDDDD, @PaleoPastels and @ClearLake! This actually was my first field trip with DPS and first time to this quarry so I wasn't very sure how things would play out, but we had a beautiful mostly cloudy day with a very nice breeze. As many of you know...quarrys in Texas can be brutal. We've been having surprisingly rainy and coolish weather, so it truly was a great day for hunting. Nice big rain the night before but not super muddy. Driving into the Quarry: I told you, there were a BUNCH of us The guy leading the trip, Francisco was really nice, made sure we were all geared up in our very very fashionable vests. He led us down to the bottom of the quarry where they had just placed a big pile of the strata we were looking for, so we didn't have to wander very far to find the right geology. Roger Farish, the DPS trip leader showed us what we were looking for...greyish rocks with lots of phosphate nodules. Most of the fossils are phosphatized, so the black was somewhat easy to see against the dryer grey, but in areas where it was still wet....that black was a bit tricky to see against the background. My first nice find was a good size Scapanorhynchus (goblin shark) about 3/4 inch long. And then a bit later in some of the pools of water, a lovely vertebra, also 3/4 inchish And there were some very nice big spiders. Don't worry. They were friendly. But.....what made my day, my month, my year was the next find. I found a Plesiosaur tooth. Yep. It was just sitting all nice and pretty on top of a small bank of mud and rocks off to the side, just sitting there waiting for me. It's kinda scrappy, but I don't care. I love it. I literally was shaking when I took it over to Roger F for confirmation it was indeed what I thought it was. So thank you Mother Nature! Here's some cleaned up and better pictures. It is one inch long So after that, I was just happy to wander around, maybe find something else...kind of wanting a Ptychodus tooth but content if I didn't find one and lo and behold....I see a tiny edge sticking out of a big chunk of rock and thought that sure looks like a ptychodus. I chipped it out and yep, a nice, if slightly broken, Ptychodus atcoenses. Not quite as nice as the one @ClearLake found, but I'm pleased with it. So a 3 1/2 hour drive up, a few hours of hunting and then drive back home again turned out to be totally worth it and an epic day for me. I found a plesiosaur tooth!!!!
  3. So a couple of weeks ago, I, along with my younger brother, decided to embark on our first field trip with the Dallas Paleontological Society. The destination was Moss Creek, a decently sized waterway on private property that feeds into the NSR. Just like in the main river, we were seeking a red layer exposure of the Ozan Fm (though I read that this red layer is different from the one at the river). This site is famous for its abundance of marine microfossils, namely shark/fish teeth. One of the people on the trip was a researcher (Shawn Hamm) who is currently finishing up a paper on this very site. I hope to read it once it's published! Anyways, the day was miserably hot as expected, but the scenery and air of discovery made up for it. My brother and I took a more secluded route, traveling downstream whereas most headed upstream. After a bit of searching, I came across a part of the creek bed that was red and, upon close inspection, was filled with tiny black phosphatic fossils. Because the matrix of the layer is so sticky, we couldn't really sift through it at the site. Instead, we, like everyone else, filled up a bucket and took it back to our car. It was a fun day and I met a lot of interesting people. One member told me to use baking soda to break up the matrix and that advice worked like a charm! I'm not sure about a lot of these IDs so feel free to correct me. If you know any species names feel free to drop those too . Here are the pictures of the highlight finds. Sorry the quality is bad... taking pictures of things this small was more difficult than expected: Fishes Lots of Enchodus Fangs and Jaw Sections Lots of Hadrodus Teeth Pachyrhizodus? Teeth Protosphyraena? Teeth. Really not 100% on this ID Pycnodont Teeth Fish Neural Spine. 2nd photo is compared to an X-Fish neural spine I found in Austin. Love the size discrepancy of the two. Fish Verts (Left) and Shark Vert (Right) Sharks Hybodont Shark Tooth. This is one of my favorites. Looks like Lonchidion? but that's just my guess. Lots of Pseudocorax Teeth Lots of un-ID Shark Teeth. Distinguishing between Scapanorhynchus, Carcharias, etc. is way above my pay grade . Trust me, I tried... Cretalamna appendiculata Tooth. By far the biggest tooth. Protolamna? Teeth Squalicorax Teeth. For some reason they all came out broken. Unidentified Tooth. Pathological? The crown is just a flat edge. Shark Coprolite? It's ringed like the ones I've seen online. Sawfish Ischyrhiza Oral Teeth Ischyrhiza? Rostral Teeth Ptychotrygon? Oral Teeth Cantioscyllium? Oral Teeth Misc./Enigmatic Finds Brittle Star Parts? Part of an Urchin? It's rounded and the center has a protrusion for where a spine once was. Kinda looks like a denticle, but may be some weird tooth? Bivalves If you would like any additional pics, let me know. Thanks for reading!
  4. With time running out before the start of the school year, I decided to spread my attention across three DFW formations to get a little taste of what each has to offer. Instead of shooting out a handful of smaller topics, I've decided to combine my trips into a single larger post. I wouldn't say any individual find is a jaw-dropper or museum-worthy, but they, all together, give a nice glimpse into what each formation can yield. In order from oldest to youngest: Goodland This adventure took place in Oliver Creek with the Dallas Paleo Society. It's a regular spot for the group on private property. The site is well known for its plethora of echinoids and highly sought after Oxytropidoceras (still working on the pronunciation) ammonites. A huge crowd of hunters arrived in Justin for the meet-up. I was worried it would be too crowded for the creek, but there was plenty of elbowroom and something for everyone. I'd say about half of the people spent the morning scouring the gravel beds whereas the others got to hammering away in the limestone ledges. Once my brother and I found the good layer, we were nonstop working out urchins and ammonites. The echinoids (A) were literally everywhere and preserved in great condition. We came out with a baggie full of them, but left many more behind. It was pretty easy to find ammonite fragments too. However, finding a complete ammonite with at least a little structural integrity was a tougher challenge. Luckily, fortune was on our side and we came away with four decent Oxytropidoceras's (B). The two pictured below are the largest and prettiest ones. Prepping them will be a challenge though. They are too fragile for the hammer and chisel, but a little too tough for my new dental pick (I bent it a bit already ). Along with these, we also got a neat selection of gastropods and bivalves (C). The Society continued on to a second location, but we decided to call it a day early since my brother was a bit tired of the heat and rock dust. A). Several Holaster whitei from the Goodland Limestone. The ones straight from the ground have amazing preservation. One urchin is covered in oysters (Plicatula?). A coating of b72 gave them a nice sheen. B.1). An Oxytropidoceras ammonite. B.2). The best Oxytropidoceras of the bunch. Its got an interesting feature that I am curious about. There seem to be some fragments of the original shell still attached in a couple of locations. These "shell fragments" have reddish orange splotches on a white base and have a distinct texture to them (I'm not sure if porous is the right word). I wonder if the red coloration is just staining or if they could be indicative of the shells original coloration. When I first noticed them I immediately thought of the red striped shells of modern nautiluses... but I am probably getting ahead of myself . C). An assortment of bivalves and Tylostoma snail. The two smallest clams appear to be Protocardia texana while the scallop is, I assume, Neithea. The largest clam is smooth and difficult for me to ID. Denton Clay Took a trip to a construction site. Didn't find anything and then got my leg cut on a rusty post. Got a tetanus booster and no lockjaw thankfully. 0/10 would not come back! Pawpaw I've been poking around a couple of construction sites located on the Pawpaw formation west of Ft. Worth. They've both been decently productive, though I wish I could've had more time to really look through them thoroughly. It's a really interesting layer with some notable dinosaur finds and shares some visual similarities with the Woodbine in my opinion. The sites I went to cut through I variety of levels in the Earth. I think they are all still within the Pawpaw, but I am honestly not sure. In a more elevated cut, I found the specimens shown in (A). I was super excited when I pulled my first Coenholectypus only to realize that it was very poorly preserved and covered in lots of matrix. I tried some vinegar on it which cleaned it a bit, but the way it's shattered and degraded on the other side makes me think this is as far as I'll go with it. In a lower layer, I found some really interesting fragments of purple ammonites and a bivalve (B). I tried hard to find something complete, but the best I could come away with was the tiny purple heteromorph I added additional pics of. I think the sites needs some rain as many of the fossils were covered in dust and hard to spot. Definitely places I will check out again when I'm back home. Lastly, I decided to include an updated pic of the micro Engonoceras that is seen in my pfp (C). I only just recently acquired paraloid b72 and have been enjoying it immensely. After applying some to my micro ammonite, it has obtained that beautiful "wet" look that really brings out its color and details. I've got some older pyrite ammonite encased in paraffin wax that I may try replacing with b72. I have a feeling they will look much better. A). Bivalve and damaged Coenholectypus urchin. B). Purple fragments of typical ammonites, heteromorphs, and a bivalve. A complete ammonite of this nature still eludes me despite my efforts. C). My Engonoceras with a fresh coat of b72. Eagle Ford Despite the fact that I've been actively fossil hunting for about a year, my experience with the Eagle Ford is focused mostly on only a couple of brief visits to Post Oak Creek. I decided that now was a good time to finally jump in and try to figure this famous formation out. I hit up a few spots at a local creek with huge exposures of bluish shale. Despite the urban sprawl immediately surrounding the area, the tranquility of the creek made me feel like I was out alone deep in the wilderness. There was plenty of foliage and animals to populate it. Something about the place made me wonder if I had somehow traveled back in time. I was quick to get to work, scanning the shale and splitting open some slabs. The matrix was loaded with tons of fragile fish parts. Every slab contained a smattering of scales (I think) and other miscellaneous fish parts. Most of the small things were so delicate they would poof away when exposed to the air. The bigger things were a bit stronger and I was thankfully able to stabilize them before they were mostly destroyed. Early on, I got lucky with a beautiful little Enchodus jaw (A). I believe it's a piece of the lower one. To go with it I always came across a couple of jaw sections with larger fangs (B). Unfortunately, the tips of them immediately popped off and disappeared into the ether before I could preserve them. One slab surprised me with a broken shark tooth that I assume is Cretoxyrhina mantelli (C). It was the only shark tooth I came across that day, but it gives me hope for future expeditions. Of the thousands of fish scales I found, I decided to try and preserve a larger one (D). These guys were very fragile so I'm happy he made it out mostly in one piece. Once again, a slab surprised me... this time with a tiny ammonite, something I don't usually associate with the Eagle Ford (E). And to round off the day, I noticed some protrusions jutting out of the shaly bank. When removing them, I noticed they were rounded orbs containing a concentration of fish parts. I assume that these are coprolites. I don't know much about these sorts of ichnofossils so please inform me if I'm wrong. If they are coprolites, are they from a fish or a reptile and how can you tell? A). Lower Enchodus jaw? B). Some Enchodus fangs and jaws. Tips broke off when revealed. These guys are both consolidated in b72 and were originally in multiple pieces. Reattaching the fangs was some tedious work. C). Cretoxyrhina mantelli? D). Fish scale preserved in b72. E). A tiny ammonite in the shale F). A crappy ending with some suspected coprolites. In Conclusion I had a nice summer break with plenty of time spent exploring the world of fossils surrounding where I grew up. It was a lot to take in, but I truly learned a great deal about the oceans that once swept over North Texas. The diversity of marine creatures is astonishing and it impresses me every time I split open that next slab of shale. With the school year starting up again, I am moving back to Austin. It's been a hot second since I've traveled to my usual Ozan spots and I am excited to get back into business. I'll take the sudden burst of rain today as a sign of good things to come. I can't help but think of all the freshly revealed marine fauna that have finally gotten the chance to take their first gulp of water in roughly 80 million years.
  5. Ironhead42

    Moss Creek Trip

    Went on a trip with Dallas Paleo Society to a Moss Creek site on private land. just ran a small batch of the matrix that I brought back. These are the "bigs", size reference is about 4 pieces per inch. Just finished this batch yesterday and haven't had a chance to do any id work yet. Variety of shark teeth Fish teeth Vertebra Cool and unique teeth Completely unknown More cool and unique (at least to me) Any help is appreciated as always! Hope you enjoy!
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