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  1. Piggybacking off of the fantastic trip report @Jared C wrote about our Eocene excursion, I thought I'd go ahead and publish an account of the solo expedition I embarked on several days prior. Some of you who are familiar with my past endeavors in the fossil rich creeks and constructions of North Texas may know that dinosaur material has been a huge goal of mine for a while now. The Woodbine offers a shot at fulfilling such a dream, though dinosaurs are still very difficult to come by. Luckily, the uniqueness of its environment means that a day without a dino is by no means an unsuccessful one as a plethora of other strange and wonderful things can be found in their stead. After an early start, I set out with a sizeable list of new sites in the Upper Woodbine. There were some mild successes to start, but to keep things concise I will only speak of the final and most productive spot. By now it was midafternoon and the winds were howling at full force. After floating about, examining various chunks of oyster hash, I at last reached a stopping point. Before me was a massive boulder, the size of a car, with a fantastically complex arrangement of debris cemented to one face. From afar it was just a greyish mess, but up close I could pick apart the various oyster shells, driftwood, Thalassanoides, etc. This mixture of debris and later considerations led me to believe that I was gazing upon an ancient storm deposit. Oyster shell hash Up until this point, I had been unsuccessful in finding any sign of vertebrates. I laid myself upon the slanted body of the boulder and got my face as close as possible to its heavily ornamented surface. Like a visual puzzle of sorts, it was very inviting to look at. Intuition told me that there had to have been something of worth hidden within the noise. Phosphate and carbonized wood It took a bit of time, but sure enough I eventually found a tiny pebble of phosphate lost in between the fissure to some branching burrow. The familiar sheen immediately reminded me of the jet black teeth I had once pulled out of the basal Atco conglomerate. With a little more wind in my sails, I continued perusing until I was met with something much more substantial. First phosphatic Cretodus semiplicatus of the day I had found a beautiful Cretodus semiplicatus. To those whom the Woodbine is foreign, such a find may seem pretty lucky as Cretodus is usually a rarity in most places. However, the marginal marine deposition of the group means that coastal predators are represented in very high numbers, so much so that C. semiplicatus is often the most common taxon of large shark to be found. Contrast this with the deeper waters of the slightly younger Bouldin Flags Fm in Central TX, where the same species occurs in much smaller numbers (though admittedly the individual sizes of the teeth are often considerably bigger). Anyways, I got to busting it out which proved difficult. The high density of durable oyster shells halted my progress greatly. Somehow I managed to extract the tooth as a clean chip without it poofing away into a million fine particles. From there, I began finding a large quantity of phosphatic bone material. Most were reptilian in nature and either obviously belonged to turtle or likely belonged to a croc. Sadly, the resilient nature of the matrix and fragility of the bones made a clean extraction more or less impossible... for me at least. Croc vert likely Terminonaris cf. robusta T Turtle elements Random ammonite fragment As my walking continued I began finding some occurrences of sandier depositions that were much easier to dig through and even richer with phosphate. What surprised me most, however, was their appearance. C. semiplicatus in situ In my eyes, those pictures above look as though they could have been taken along the shores of any sandy beach saturated with seashells. The soft sand was so loosely packed, the slightest pressure could disturb the granules and send them drifting away. As I scanned, I couldn't help but imagine the tropical storm or hurricane that must have taken place here 96 million years ago in order to create this flash-frozen formation. The wind suddenly felt of an ocean breeze, and the cloudy backdrop like a Mesozoic sky in recovery from absolute chaos; Alone, I wandered the shore. A couple of croc teeth. Likely Terminonaris cf. robusta To round off the day, I found some beautiful, though damaged, croc teeth. Like the critters asleep in this dune, it seemed I had lost track of time, so I made my way home. ~~~~~~~~~~~~~~ I have a bit of micro matrix to go through, but as of now, these are the species of vertebrates found: Cretodus semiplicatus Cenocarcharias tenuiplicatus Meristodonoides rajkovichi Pseudohypolophus mcnultyi Some nice pycnodont teeth were found Mostly Haimirichia amonensis, but I will take a closer look later Terminonaris cf. robusta I really thought I saw a dino tooth sticking out of the sand when I first spotted this. Actually it is an inarticulate brachiopod ( @Tidgy's Dad enjoy!) called Lingula subspatula. Thanks for reading!
  2. Mikrogeophagus

    Cladophlebis texensis, Lewisville Formation

    From the album: Woodbine Formation

    Cladophlebis texensis, North TX Cenomanian, Cretaceous July, 2022 These tiny ferns lived on the deltaic plain amongst Protohadros and other dinosaurs. Eventually they were swept away and carefully preserved in these mudstones. Truly a unique Cretaceous find for TX. Sometime soon, I want to revisit this site and search for other unusual fossils perhaps of insects or even feathers. A dino tooth wouldn't be so bad either.
  3. Mikrogeophagus

    Cladophlebis texensis, Lewisville Formation

    From the album: Woodbine Formation

    Cladophlebis texensis, North TX Cenomanian, Cretaceous July, 2022 These tiny ferns lived on the deltaic plain amongst Protohadros and other dinosaurs. Eventually they were swept away and carefully preserved in these mudstones. Truly a unique Cretaceous find for TX. Sometime soon, I want to revisit this site and search for other unusual fossils perhaps of insects or even feathers. A dino tooth wouldn't be so bad either.
  4. I finally got back some of my prepped woodbine/eagleford ammonites, conlinoceras tarrantense, and I’m really happy with how they look! I collected all of these, and my friend Mercer prepped them for me. I need to get a reminder on what he used to coat them. One of them has a lot of sandstone but most have nice calcite. First 3 pics are the same one, admittedly the last 2 pics might have 1 that is different, they came back looking different enough that I can’t tell easily 🤣. Ignore the three circled ammonites, the one that isn’t circled is pictured.More to come..
  5. David Peterson

    Fossil ID request

    Could someone help identifying what this is? Its a bit bigger than a shoebox and weighs about 30 pounds. Thanks in advance. This is from the woodbine btw as well as the ammonites ive included.
  6. Shaun-DFW Fossils

    Woodbine ammonites (conlinoceras)

    I was thrilled to find 9 woodbine ammonites today in eastern Tarrant county, TX, but what made it even better is that more than half were found at a locale that I found on my own. I found 2 very small ones some months ago, but it took this latest heavy rain and flooding to wash the rest out onto a large gravel area where I found them. One looks like it came out of a concretion. My only sadness is knowing that I can’t go back every week and find the same haul! All were either underwater or laying in the open except for one that was partially exposed in loose gravel.
  7. I have had great luck finding fossils in creeks and wild places, but this afternoon was my first construction site success (other than Grayson nautiloids and a few shoe clams), and the first success I’ve had in northern Johnson county at a Mansfield construction site. I barely lifted this into my trunk and the car immediately lowered by a few inches. lol! I like creeks because erosion isn’t only visible for a few days until a big slab covers the entire ground, but it sure is easier to find ammonites by the curb..when they’re right there! If only I could have a cell phone alert for active tractors in the Tarrant Formation..
  8. I had my best hunt of the year Saturday, it was incredible. I guess you could say I was…petrified. Sadly, my phone died after getting stuck in a reboot loop (thanks iPhone 10) so it’s now extinct. Oh and I finally found a dinosaur! It’s on top of an ammonite. 🤣 25 complete ammonites a few partials! I also found a 21-inch long chunk of pet wood and a colorful smaller chunk. I then found 11 ammonites today to start the new year right. My back is still sore and feet tingling after treading through creeks where shallower areas were actually frozen..lol! Tarrant and Dallas County locations. 2 were in partially exposed concretions. One of those is placenticeras or engonoceras? sorry about the blurry pic, I’m using another old phone I have that has a camera that only works when it’s on 2x, so I’m having to adjust to taking pics with it.
  9. The apartments I live in are doing plumbing excavation and this was dug up, couple things caught my eye so drug it home. It's a very pretty variety of rocks to be mixed in cement if that's the case, couple strange things one in first pics, (not the rock) then there is the stone with unusual dendrites I'm assuming, what is the thing they are growing around in center? Whats with all the tubular shapes? Sorry for picture quality my lens getting scuffed up. Except for first three pics all the rest are same stone, I became slightly obsessed with it
  10. I found this sticking out of a tall creek bank at water level, it doesn’t flake or leave residue like burned wood. Edge of woodbine and eagleford in far eastern Tarrant county. I’m guessing it’s petrified or at least very old? I appreciate in advance the confident explanations.
  11. Shaun-DFW Fossils

    Woodbine pet wood and more

    I’m searching for more Tarrant formation exposures between the woodbine and eagleford in Tarrant/Johnson counties and came across a few normal items (no ammonites this time). One of the more colorful small pieces of pet wood I have. Also, thanks to Lone Hunters ID assistance I have my first piece of coalified wood. I was in a hurry, and it was getting dark, but there’s more at the spot, I’m sure.
  12. Shaun-DFW Fossils

    Eagleford/woodbine fossil IDs?

    I don’t usually find these and I can’t say I know what genus/species they are, but I have come to appreciate the fine detail on a lot of fossils in the eagleford and woodbine compared to what I find in the limestone rich Fort Worth/Grayson/duck creek formations. Any help is appreciated! Mostly Tarrant but a little Dallas County TX too.
  13. Shaun-DFW Fossils

    Conlinoceras tarrantense+pet wood

    I have 3-4 spots (duck creek, Grayson, Fort Worth formations) I haven’t yet revisited since it rained that are really close to my house. I’ve been to the same conlinoceras spot 3x and this was my last visit until we get heavy rain/erosion again. It didn’t disappoint! Funny how I can walk by the same spot 3x and find things I missed. Haha! I’ve seen ammonites missing chambers before, but this little one seems to have indentations that might have been there originally, like from bite marks or something. What do you think? Just my child-like imagination? the nice looking white calcite specimen missing part of itself is from another larger creek that my primary spot feeds into more upstream. Tarrant County TX.
  14. Shaun-DFW Fossils

    Woodbine/eagle ford border ID needed

    I found this in a creek in Tarrant county along the woodbine/eagleford border. Lots of sandstone present in the area, and some concretions. Thanks in advance for the ID assistance!
  15. Shaun-DFW Fossils

    Unreal woodbine expedition today

    My best woodbine hunt ever (since I started this year, lol), 11 woodbines and one of them is over 7 inches across! The overall condition is better than my 2 prior excursions as well. I’m super thrilled about these. I also found some great pet wood pieces with the appearance of having been underwater for awhile “back in the day.” Any insight into the smaller “critters” is appreciated. I am not positive if one piece is sandstone or pet wood, but I do have 3-4 pet wood pieces (some not shown). The small ammonite in front is a different species than the conlinoceras tarrantense. Woodbine/eagleford border, Tarrant county Texas. My toes went numb walking the creek. I know another hunter who found 7 woodbines at this spot 2 weeks ago (after our biggest rain since Spring) but I guess my eyes were more desperate to spot what he missed
  16. Shaun-DFW Fossils

    My woodbine ammonite collection

    Most of my personal collection of fossils is still not fully prepped (or prepped at all in many cases), but I’ll try to share pics by groupings as I pull them out over the next few days/weeks. The easiest will be my echinoids and my eopachydiscus ammonites. My mortoniceras ammonites need a lot of prep work but I have some interesting ones. Here are my woodbine ammonites. I won’t likely keep all of these, and I may slice those that are really worn down on the outside, but for now, they’re all mine. I bought the top right specimen from the recent fossilmania show from the guy who preps my fossils..I hope to find one that size one day! These are all eastern Tarrant county TX. I’m scoping out johnson county for possible spots near Alvarado. The biggest ones you see in my photo are 5-7 inches in diameter.
  17. Fullux

    Hadrosaur?

    Howdy all, This is supposedly a hadrosaur tooth from the Woodbine formation of Dallas Texas that I'm very interested in. (If you know you know) Do y'all think the ID is accurate?
  18. Mikrogeophagus

    Leptocleidian Plesiosaur, Rush Creek

    From the album: Woodbine Formation

    Leptocleidian Plesiosaur, North TX Cenomanian, Cretaceous Jul, 2023 Between Leptocleididae and Polycotylidae it is unclear which of the two sister families (both within the clade Leptocleidia) this tooth belongs to. This tooth is from marine coastal strata that would have been in near proximity to freshwater sources (see the Woodbine river delta that once existed over Grapevine Lake). Leptocleididae is known up until the Early Albian from freshwater, near shore, and brackish environments. Some possible teeth were documented from the Kem Kem river system which is similarly aged Cenomanian rock. They typically have very gracile teeth similar to this specimen. Polycotylidae is a sister taxon that extends through into much younger deposits and is regarded as a marine group. They arose in the Albian and typically have more robust morphologies, though a basal species could be gracile like this specimen.
  19. Shaun-DFW Fossils

    Woodbine expedition #2: success

    These woodbine ammonites are NOT easy to find, but I finally had a lucky murky underwater protrusion grab that proved to be a larger one than I found last time, this one about 3.25” across. I also found some great (for me) chunks of fossilized wood and an entire trunk I’ll have to find some way of retrieving later. The biggest piece of wood is over 9 inches and glistens in the light because of the crystallization, which doesn’t show up well in photos. I found a Macraster echinoid too, which seems out of place, I never find those at the Eagleford/Woodbine border. Is this out of place or do they occur here? I find most of them in Grayson or Fort Worth formations
  20. Shaun-DFW Fossils

    Mighty fine woodbine..

    I feel like I finally hit pay dirt today, my best woodbine ammonite day in my short time looking. I think the smallest one (2.5”) might be a different species? It has 4 little bumps across the top, I notice the rest have fewer. I was pumped to find these! I started out a bit too far in the woodbine, but I grabbed some small pet wood pieces, at least. Far eastern Tarrant county TX
  21. Lone Hunter

    Many trace fossils - what made them?

    Collected in Woodbine, so many different traces on both sides of rocks really curious what made them, esp the 'plowing', there's a single and double plow. There's an odd tube like thing with ' inards' coming out, and lastly a really random one, single trail with piece of something stuck in it. Hopefully someone recognizes some of them.
  22. Shaun-DFW Fossils

    Woodbine ammonites

    I first stumbled across woodbine ammonites while looking for snakes nearly 8 years ago. At the same spot, I found my first 2 complete ones plus a few pieces of larger woodbines since I started getting into fossils, so it’s been a good weekend! They aren’t nearly as easy as finding the mortoniceras so I’ve been trying to find viable locations along the eagleford/woodbine formation border in DFW area. I’m all ears if you have any hints!
  23. Hi all, I think I found a fossilized limb/log in the Woodbine formation in Flower Mound, TX. If not for one segment that retains the woody characteristics (branches/knots/rings) I might have dismissed this as a steinkern or burrow of some sort. I’m especially curious to know how common this is in my area and learn more about this type of preservation. I’ve found a fair amount of silicified/petrified wood in North Texas but this crumbly/barely intact/almost sandstone kind of preservation is a first for me. When I saw it at first I was certain it was a waterlogged chunk of firewood and I was startled when I realized it was definitely stone. I appreciate any insight the community can offer!
  24. Mikrogeophagus

    Woodbine Plesiosaur? Leptocleididae?

    A tooth I recently pulled from my Woodbine honey hole keeps getting better the more I look at it. I originally thought it was just a really big crocodile tooth of the species Woodbinesuchus byersmauricei, a common find for the site. After cleaning it today, I noticed it was pretty different and am now 90% sure it's a plesiosaur tooth, perhaps from the family Leptocleididae (as opposed to Polycotylidae or Elasmosauridae) and maybe with some real scientific significance! Stay with me here... Crocodile teeth are pretty common for the site. So why do I think this isn't one? Besides being quite large for a croc, the 12 enamel ridges on this specimen vary in shape and are spaced out whereas my crocs typically exhibit tightly spaced, uniform ridges numbering in the many dozens. The ridges on the "plesiosaur" are restricted to the lingual side. My crocs typically have ridges spanning the entire circumference of the crown, though they sometimes peter out on the labial side as well. Another significant difference is in the sigmoidally curved crown which is normal in plesiosaurs and generally not seen in crocs. "Plesiosaur" (L) and Croc (R); Note the significantly different enamel ridge characteristics. "Plesiosaur" and my complete crocs. Quite large relatively speaking. It's crown is about 20 mm long and 6 mm in diameter. Sigmoidal curvature in the crown. I am less sure of the familial identification and beyond. A quick google search for Cenomanian Plesiosaurs revealed an interesting article on freshwater Kem Kem Group Plesiosaurs (https://doi.org/10.1016/j.cretres.2022.105310) from more or less the same time (Woodbine = mid Cenomanian vs. Kem Kem Group = ?Albian-Cenomanian). What initially caught my eye was Fig. 5 where a handful of similar teeth are shown: Fig. 5 from the article. Leptocleididae indet. shed teeth. These are thought to be indeterminate Leptocleididae shed teeth for features shared with my specimen. The authors rule out Polycotylidae on the basis that those teeth are usually more robust. They acknowledge that longer teeth of Polycotylidae do occur, but the striations are finer than Leptocleididae. The authors contrast their teeth (and mine) from Elasmosauridae and Cryptoclididae by stating that those families have straighter teeth with more labio-lingually compressed crowns that create a strong oval cross section. My tooth and those shown above are sub-circular/slightly oval-shaped. Another point to make is that Leptocleididae plesiosaurs are UNKNOWN from deep water environments and are instead suggested to be nearshore specialists (Woodbine is famously nearshore with its crocs, Cretodus semiplicatus, and other nearshore fauna). On the other hand, Polycotylidae, the sister taxon, is a deeper water family. Hard to show a good cross-section because a chunk of root juts out of the bottom making it look more labiolingually compressed than it really is! Implications and Significance: One extremely interesting aspect of plesiosaur ecology that is highlighted by the article is their strong presence in prehistoric freshwater ecosystems. Plesiosaur teeth of the family Leptocleididae are commonly found in the Kem Kem river systems which isn't crazy given they are thought to be nearshore specialists. The authors note that contemporaneous marine deposits have yet to yield Leptocleididae material, which makes one wonder: were they freshwater specialists unable to live in the ocean? I would've been inclined to assume they could survive both fresh and salt given my preconceived notions on plesiosaurs, but there is a lack of hard proof... Until now? If this is what I think it is... this may be the first evidence of Leptocleididae found in a marine deposit contemporaneous with the Kem Kem Group! Just the missing puzzle piece emphasized in the article. Reeling it back in- Keep in mind, a few hours ago I thought this was just a big croc tooth! Also, I don't know much of anything about plesiosaurs since I had never found such material previously. My head is spinning with all these new names. Hopefully you all can provide some clarity on this matter. @pachy-pleuro-whatnot-odon @Jared C @PaleoPastels. Feel free to tag anyone else you know who might have some knowledge on the subject! Pics: ~Thanks for reading~
  25. Kikokuryu

    Woodbine Nodosaurid?

    I got this a year or so ago, but this was bought as, possibly an ankylosaurian from the Woodbine Formation at Dallas Fort Worth Airport, Texas, USA. It is in pretty rough shape, so I don't expect the best results, but I'm hoping it is an indet. narrowed down to at least Ankylosauria. It looked like it could be a Nodosaurid indet. based on shape. A high chance of it being a complete bust, but I didn't spend much on it so it I figured it was worth the risk for a rare locale. Forgot to take a picture with a measurement, but it's roughly 4.5mm tall.
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