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Found 368 results

  1. Recently obtained this nice Mosasaur jaw from the Niobrara Chalk of Lane County, Kansas; Cretaceous time period. No restoration has been done, but some stabilizing glue has been applied to the teeth. All that aside....any ideas as to what species it may be?
  2. Hi all My son and I found this small (1 cm) tooth from Post Oak Creek in Sherman, TX, and are trying to identify it, if possible. Our best guess is a fish tooth (maybe Pachyrhizodus or Xiphactinus) or a small mosasaur tooth. There is a small ridge running lengthwise down the tooth, and the tooth base is oval with a central canal. Thanks!
  3. I've been cleaning up this block of Moroccan material, and have exposed most of the central bone. I have no idea what it is, despite the fact that it looks very distinctive. Does anybody have any ideas please? Judging by the size, I would guess it could be mosasaur, but I don't know if the teeth have been placed or were there originally. Numerous fish bones are also present, as usual. Thanks in advance.
  4. Hi y'all, 2-25-17 went to 2 different bridges this day. The first bridge was very muddy and proved difficult to find anything so I cut to another favorite bridge where I thought I would have better luck. To my surprise I found gravel bars relitivly free of mud and foot prints. I hiked out pretty far things were much more productive. I met a fellow board member @zoocosmolina on my way back. Great meeting you. I'm sure we'll be meeting up again at some point.
  5. Mosasaur teeth and Otodus tooth from Morocco for trade. I like all different kinds of fossils so I'm not going to specify what I would take in trade.
  6. NSR is dry and footprints everywhere but I still had a great day. The Mosasaur Angular with shark feeding marks & possible shark tooth embedded is my favorite.
  7. Hi all, Usually you see these fossils in the "Is it real?" thread, but I decided to make a change. This mosasaur block contains several teeth, and I think they are real, and it is possible that the block was found as such (if you think any of it is fake/reconstructed, let me know). As usual, it's from our favorite mosasaur location Khouribga (Morocco), meaning it's from the late Cretaceous (like all mosasaurs). Now I would like to put a species (or several species) on these teeth. Here's a list I found of the different mosasaurs found in Khouribga (it may be wrong): Globidens phosphaticus (definitely not this one) Halisaurus arambourgi Halisaurus walkeri Mosasaurus hoffmani Platecarpus ptychodon Prognathodon curii Liodon anceps (?) All of them (except for Globidens) seem like possible solutions for my block. So, what species do you think it is? Maybe there are different species for the different teeth? Thanks! Max
  8. Hi, Here another mosasaur tooth, this time single but with root. Again, Khouribga; late Cretaceous. See my previous post for more info: So what do you think? What species could it be? Best regards, Max
  9. I bought a nice partial mosasaur skull recently and here I will share the process of prepping it a bit. I don't think I'll remove the bones from the matrix. But there's definitely some stuff that can be uncovered. There are definitely part of both frontal bones of the skull roof. The underside of the frontal is visible. There is also part of a jaw visible. I'm not quite sure yet as to which part it is. It could be either dentary, pterygoid or maxilla. Right now I'm slightly leaning towards the back of the maxilla (with the inside being visible). But time will hopefully tell. There are also a few as of right now unidentified bones. There are at least five teeth in the piece. Only four are clearly visible. The fifth is a replacement tooth that is only barely visible on the top of the jaw in an open hole. Unprepped state as I bought it. Some photos after a number of hours of prepping. It's quite slow going since the bones are fairly soft. Back of the jaw. A view from the other side of the jaw. On the bottom left the hints of the fifth tooth can be made out. View of the frontal bone. The midline is visible but the bones are broken in to a lot of separate pieces. The frontal bones are pointing to the right and the midline is roughyl horizontal in the photo. Two anterior teeth with roots and an unidentified skull bone broken in two. My guess is that is belongs somewhere near the frontal bones. More to come in the future!
  10. Here's a size comparison of the bone to a guitar pick I need help identifying. I live in the tip of the central basin of TN and have believed for a while now that central TN also used to be an ocean like west TN however thats not backed by anything but a ton of coral. If this is in fact a mosa tail vertebrae than it would prove my theory, If I'm wrong please let me know.
  11. Spent the morning at Post Oak Creek yesterday. It was pretty well picked over and we need some rain. Found tons of broken teeth and was about to head out when I bumped into a family that was there for the first time and never hunted before. I asked if they would like some help which they gladly accepted. Made a few fun finds including a couple of sawfish rostral teeth and a beautiful peice of fossilized soft shell turtle shell. They also found a nice complete Cretodus. We spent a couple of hours together and they definitely got the fever. I am attaching a couple of my finds since I gave away most.
  12. I was hoping some of our Mosasaur experts (@LordTrilobite @jnoun11) could lend me their opinion on the following Mosasaur from Morocco I want to purchase. I was told it is Prognathodon, agree?
  13. My 12 year found these and I am not sure if they are Mosasaur verts, etc. I am thinking it MIGHT be a Mosasaur humerus. It is definitely fossilized, although it looks like unfossilized bone. The smaller one... I will defer to the Forum's expertise. Thanks!
  14. A muddy but fun NSR trip. I found a nice variety of fossils & artifacts. Some pretty good size baculites this time. @GeschWhat will probably appreciate the coprolite. It's full of bones under magnification.
  15. I took a long 8 - 10 mile hike at NSR. The weather was beautiful and wildlife abundant. I saw hogs, deer, beaver, hawks, ducks and geese among others. I picked up a nice variety of fossils. I really like the Xiphactinus jaw with replacement tooth showing. I sat down to take a break and found 4 shark teeth in one area. The little fossilized turtle scute is also cool.
  16. In keeping with the Micro-paleontology theme I sliced up a few Mosasaaur teeth and made thin section slides. Hoping to find something resembling a cavity. There are cavities, but not the dental type. The reason my dentist said "No sugar". All of the teeth were hollowed out at the root end and filled with a soft/loose grainy mixture. A web presentation may be viewed here. Photo1 shows a sampling of the Mosasaur teeth I received from Rocks and Gems Canada. The teeth are cracked and broken as I requested a grab bag of fossils from the cutting floor. The Mosasaur teeth are much softer than I expected and the slicing, grinding and polishing went quite quickly. Photo 2 is the tooth I selected for making thin section. Photo 3 shows the sandy fill and photo 4 is through a 10x stereo microscope. The microscope view shows a wide variety of colurs that deserve closer attention. Photo 4. Many colours of the fill. Photo 5 is the cross section view at 5x with crossed polars. My search for cavities narrowed down to what look like root channels in the tooth. This is pure speculation and dreaming. My stereo microscope has a .8x to 4x optical range so photo 6 at 20x, photo 7 at 100x were taken through the Labomed LB-592 polarizing microscope with the traditional turret mounted objectives. Some of the outer surfaces of the teeth looked to be constructed of two or more layers. Photo 8 is the tooth I peeled back a bit to reveal the layers in photo 9. Photo 9. What appear to be layers in the tooth enamel Photo 10 is a closeup at 10x.
  17. From the album My Collection

    This is one of the shelves in my display case. It features what little dinosaur material I have along with material from other reptiles (mosasaur, keichosaurus). There's also a branchiosaurus in there for good measure.
  18. From the album Cretaceous

    Mosasaur Tooth (large partial) Upper Cretaceous Wenonah Formation Big Brook Colts Neck, N.J.
  19. What is the "anceps" in Prognathodon anceps? Is that the species name? I'm having a hard time finding anything online to explain other than some dealers selling some teeth on various sites. Sorry for my ignorance and thanks!
  20. Hi y'all, Here are the finds from 3 separate half day trips to Post Oak Creek during the first weekend of Feb and from last Saturday. One of those days was spent hunting a new to me part of the creek that seemed to have more trash and glass than fossils. That day I decided to make a move to a more productive part of the creek to collect some gravel that I had promised my nieces so they could do some fossil hunting at home. Also I collected some for myself. Last Saturday @Buffalo Bill Cody and I went hunting. It's was warmer and I noticed several bass swimming in the creek. I'll have to bring my fishing pole for the next outing. The week before last I went canoeing on the Llano River for 4 days where I had the pleasure of seeing some interesting fossils that I'll be posting below. Bare with me. I'm posting from an IPhone.