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  1. ThePhysicist

    A Physicist's Collection

    While my prime focus is essentially learning how to accurately describe Nature in the precise language of mathematics, I've always been intrigued by natural history - it's actually what started me on the path to physics. The sort of interrogation that paleontology practices provoked me to think and question even further, down to the fundamental science which makes it all work. Collecting fossils has brought a large amount of enjoyment to my life, and is often a welcome distraction from what can sometimes be straining work. The knowledge that I accumulate along the way is also part of the fun. Here is my collection, which will always be a work-in-progress. There's still many things I haven't photographed yet, but I feel comfortable saying this is the majority. I don't have many big things, but I'm certainly pleased with the many small things I have so far. Links to albums: Dinosaurs Sharks North Sulphur River Post Oak Creek Permian Aguja Formation Harding Sandstone Devonian Galveston Fossils Miscellaneous Highlights / Personal Favorites: The ones underlined are linked to their respective fossil page in the Fossil Forum Collections, which has more information and photos. Infant Tyrannosaurus rex posterior tooth If I could keep only one fossil, it would be this one. It's from my favorite animal that has ever lived, and being from a young'un is just so darn cool. A true crowning jewel in my eyes. Juvenile Tyrannosaurus rex maxillary tooth Again, you can't go wrong with T. rex. It doesn't have the best preservation but regardless, there's a lot more to love. Tylosaurus proriger tooth (self-found) Undoubtedly my favorite find to-date. Finding fossils yourself adds that extra value to its place in your collection. I'll remember the moment I first saw it for a long time. Triceratops prorsus tooth Triceratops is another one of my favorite dinosaurs, I think we all grew up playing with toys of T. rex and Triceratops. Unique circumstances also allow for me to say it's Triceratops and not Torosaurus with some confidence. It's not perfect, but still a significant part of the collection. Avisaurus archibaldi tooth A bird tooth? Doesn't get much cooler or more uncommon. Dimetrodon cf. limbatus tooth I've always been drawn to "icons of life," since those are the ones we remember from childhood. Dimetrodon is definitely an icon, and I'm glad to have found one of these uncommon treasures (in micromatrix - it was a very nice surprise). Cretoxyrhina mantelli tooth One of my favorite shark species, the "ginsu" had sleek-looking teeth, ate mosasaurs and dinosaurs, and was overall a formidable animal worthy of admiration. Cretodus crassidens tooth (self-found) Another one of my favorite sharks. It's not big or complete, but the preservation is so rare for the locality (POC) - the gloss on the enamel is as if it fell out of the shark's mouth yesterday. Saurornitholestes langstoni tooth I'm currently working on growing the dinosaur component of my collection, and this is my first Dromaeosaurid. Dromaeosaur tooth (Hell Creek Fm.) My most recent addition (as of Sept. 4, 2021), and it's my best dinosaur tooth for sure. Unfortunately it will be labeled as only a Dromaeosaurid tooth for now, but it still is just a great tooth from a cool family of dinosaurs. Shark Tooth Riker Display I've got one riker that I've tried to squeeze as many teeth into as possible. I need to get a couple more, probably; there's a lot of teeth that deserve a riker, but are just lying around. I'll try to update this thread semi-regularly as I make acquisitions in the future.
  2. Cretaceous Eagle Ford, #1 I know it's worn and broken root but both edges are serrated, Hemipristis? #2 Both Enchodus or the smaller one possible Xiphactinus? #3 Had hard time getting details, assuming it's some kind of tooth, bony fish? Ptychodus?
  3. flyingpenut

    Post Oak Creek Oddities

    I usually don't post the trip to POC anymore but this time there were some oddities i wanted to confirm and or see if anyone knows what they are. I found the usual few ptychodus teeth as well as tons of broken shark teeth but also some more rare items. There is one small shark vertebrae, a piece of a fish vert, two broken ends of sawfish rostral teeth, a weird piece that looks like coral to me but also looks like it has teeth poking out of it, a large piece of mammoth enamel, and what I believe is a small mosasaur tooth. Pictures 2, 3, and 4 are the mosasaur tooth. I have it in my hand for scale and it is small but it looks exactly like ones i have seen posted from the North Sulphur River just smaller than most. Pictures 5 and 6 are of the coral looking thing. I could have sworn i saw something like this on the forum before but i have looked and can't find the post. Any ideas of what this is? 1 2 3 4 5 6 7 8
  4. val horn

    Maybe its a pearl?

    I think it is a fossil pearl. It was found in a shell fragment in Post-Oak Creek texas, but I am not sure as it is the first I have found. If it is a fossil pearl how do fossil pearls relate to common pearls
  5. As it looks like I won't be able to make it back out to Charleston for quite a while, I was wondering what the fossil hunting scene looks like here in Texas. I've heard that there's some miocene material to be had around Galveston and Bolivar, and I've heard about the Eagle Ford Formation and Post Oak Creek, but I haven't come across a whole lot of information. I do know there are some invertebrate fossils along the Brazos, but I'm not super big on snails. I'm in the Houston area, so a day trip down to the coast is definitely feasible, but I need to do some more research before I commit to making a trip up to North Texas, which seems to be where most of the action is. Can someone just give me a quick rundown on the general information I need to know?
  6. Here is my latest trip to POC. Another nice large tooth (I took a picture with a cm ruler for the non-Americans out there), some mastodon or mammoth enamel, a few nice ptychodus, chunkasaurus, and several chunks of matrix with teeth sticking out of them. I also had a few questionables. Anyone know what kind of tooth is in pictures 5 and 6? Or 7 and 8? Im thinking 9,10, and 11? 12, 13, and 14 might be crushed crustacean or coprolite? 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
  7. dr_doink

    Mystery Tooth

    Hey All, Spent some time in Sherman, Texas the other day doing a lot of creek walking on the Post Oak Creek and came across an arrowhead, a ton of shark teeth and some other shells and stuff on the gravel bars but this tooth is making us scratch our heads and we need some extra eyes. Any kind of help would be appreciated, thank you
  8. Thomas.Dodson

    North Texas Hurricane Vacation

    During hurricane Ida I left Louisiana and stayed in North Texas for a little while as a sort of fossil hunting vacation. I'm currently still in North Dakota as I wait for my power to come back in Louisiana but as a result I've had a little bit of time to start cataloging some of my finds. There's still a lot left to go through but I figured I should just post some trip photos and specimens now. Day 1: Day 1 was spent on the North Sulphur River. I stopped here once in 2015(?) on a trip but I got to spend much more time here this time. A familiar view to many. Mosasaur rib A nicer Baculites. An artifact that came about 6 inches from the above Baculite. A bit of the nicer invert material. Day 2: I spent all of day 2 and a little bit of day 5 at another well known site, Post Oak Creek. It was a first for me. Collecting some micro matrix. A big old Cretodus I picked off a sandbar. A little goblin symphyseal I believe. Not the only one. A rootless/not completely formed tooth. I got a couple in matrix specimens. Nice Ptychodus teeth, all whipplei. Hopefully I'll find more species in the future. Other teeth. I like the colors on a lot of teeth from this site, such as the big Squalicorax. Love the oranges. Candy corn microtooth (3.5 mm). A LOT of microteeth are in flawless condition and I'm looking forward to getting a camera set up on my scope in the future. Non-oyster inverts. Sorted micros. Lots of Ptychotrygon sp., a couple Pseudohypolophus, a Microcroax, maybe a couple Squatina and Polyacrodus, and a lots of immature individuals of larger species. There's also a claw piece from a decapod. Looking forward to finishing identifying these under a scope camera.
  9. ThePhysicist

    Cretodus posterior

    From the album: Post Oak Creek

    Extreme posterior from a large genus. Note the striations at the foot of the crown, and no nutrient groove.
  10. Spent Saturday afternoon visiting Lake Texoma and Post Oak Creek. Overall not a bad day. Found some decent ammonite and rare Paraisurus tooth at the Texoma. Also found nice shark tooth from the Post Oak creek. Always nice size ammonites exposed on the surface at the Ammonite Beach. Water levels pretty low. About 6 feet under. Nice looking Paraisurus tooth from the Duck Creek Lake Texoma. Last time I found one was back in 2019. This was a nice find for me. Nice decent shark & fish teeth from Post Oak. I found all these within first 15 minutes I got there, but then nothing. For less than an hour, not too bad!.
  11. I took a vacation fossil hunting in North Texas to escape Hurricane Ida to much success. I hope to post a trip report with some of the finds when I get a chance and might need to post more ID requests later but this particular tooth from Post Oak Creek interests me a lot so I wanted to at least get this posted. It's rather water worn but I welcome any ideas you might have. Despite how it appeared in the field it now looks more fishy to me. Not sure it'll get past "fish". @ThePhysicist
  12. Austin83

    Is this a shark tooth fragment?

    Another Eagle Ford Group Texas find. The texture and color differs compared to every other tooth found, but it has a shark tooth shape. Thanks in advance.
  13. Tony G.

    Post Oak Creek oysters

    Does anyone know the Genus/Species of these common oysters from Post Oak Creek, Sherman, Texas.
  14. ThePhysicist

    Cretodus crassidens

    From the album: Sharks

    Cretodus crassidens Eagle Ford Group, Sherman, TX A smaller tooth from one of the largest predatory sharks in the Late Cretaceous (~ 90 Ma). It likely filled a similar niche in its environment that the Great White Shark does today. Its teeth are characterized by pointed side cusps, rounded root lobes, no nutrient groove, a shelf-like lingual root protuberance on anterior teeth, and striations (ridges) at the foot of the crown (on both the main cusp and side cusps). This tooth is as nice as they get in terms of preservation and completeness from this locale - this one is only missing the tip.
  15. ThePhysicist

    6/17/21 Trip

    From the album: Post Oak Creek

    Nothing extraordinary, but I found an area with several chunks of matrix with teeth in them.
  16. ThePhysicist

    Ptychodus in situ

    From the album: Post Oak Creek

  17. Hi everyone! Ya'll where a huge help with the shark teeth I posted, so I figured I'd ask for some help with some of the more unusual stuff I've found at Post Oak Creek. For anyone who doesn't know Post Oak Creek is a small gravel filled stream in north Texas that lots of Cretaceous shark teeth get washed into from the Eagle Ford Group (shout out to ThePhysicist for clarifying the formation!). However a lot of Pleistocene material gets washed in there as well so you get this lovely set of gravel bars where you're finding stuff like crow shark and goblin shark teeth in the same sift as a bison tooth or a horse bone. Anyway here are a few small Pleistocene fossils I could really use some help identifying. The first is a phalange, I'm thinking either Racoon or Bobcat though I don't know for sure. Second I think is a bird bone since it's completely hollow though I have no idea what bird (if it is a bird I'm counting this as finding a dinosaur bone in Texas!) Third is an incisor from a mammal I think. Any insight is greatly appreciated!
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