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Found 588 results

  1. Hey guys. Newb here. I picked up this mosasaur tooth at a local shop today, I’ve read through the forums about some fake settings with the jaws and whatnot but was wondering if just from the pics if anyone can tell me whether this setting with the root looks real, or did i just buy some teeth set in a fake mold.
  2. Looks like a complete fabrication, barring the crowns? @Tidgy's Dad @-Andy- @Troodon
  3. Hi everyone, With this thread I wanted to start a discussion about what the feeding habits would be for most mosasaur species, how you think they would have fed. I personally love mosasaurs, they are one of my favorite prehistoric animals for a number of reasons and I’ve recently even bought my first Prognathodon jaw and I also live in an area that is not only known for their fossils but also for the discovery of mosasaurs. I’ve been doing a bit of reading lately about mosasaurs but I can’t really find anything difinitive on their feeding habits. Their diet yes. But exactly how they consumed their prey, not yet. I personally work with reptiles on a daily base, both with my job and with my hobby and I know quite a bit of different feeding behaviours with these animals. And as I was feeding the ball pythons (Python regius) at work I was kinda wondering, how would a large marine reptile like a mosasaurus eat? Would they just tear off chunks of meat like their closest living relatives the monitor lizards? Or would they perform deathroll like crocodiles do to tear of chunks of meat of their prey? Or when we talk about smaller prey, would they just swallow them whole like a snake does with it’s two lower jaws that can move independently, would a mosasaur be capable of that? Or would it be a mix of all those things or something entirely different? So I was just wondering what are your thoughts on the subject? I love to hear your theories and own finds and observations or if anyone ever read something in a scientific paper about the matter. I am dying to know your thoughts on the matter, as I want to learn as much as I can about these magnificent beasts!
  4. Hello everybody Another of these topics, but here we go ^^" I already looked up several topics on this forum about this topic and just tried to get as much examples as posible. Just to get into this big field of Mosasaurus teeth. Getting a crown tooth seems not to be that big of a deal since they are very common. It gets interesting if you want something with a root. As I understood this is where the fakes begin. I wanted to leave 3 examples here that are offered right now and would love to have your opinion on that. These are all described as Prognathodon indet. from Khourigba / Morocco. Between 4.5 to 5 inches. Still in the original Matrix, no fabrications according to the seller. What I would like to know: Are these fabrications? And is the existence of Matrix an indication for fakes? Or is the Matrix just there to hold crown and root together (like in 2 and 3?) Can this be described as Prognathodon indet.? Or are teeth from Morocco best described as Mosasaurinae indet? 1 2 3 Unfortunatly I can't provide more or better pictures. Any help is welcome and thank you so much for your help!
  5. Mosasaur tooth with replacement tooth

    From the album Marine reptiles and mammals

    Mosasaur tooth with the replacement tooth still in place. I always wondered what the weird round/oval holes were on the side of mosasaur roots. Finally it all falls into place!
  6. Hi everyone! I know mosasaur teeth are fairly common and you can pick them up really cheap, this means they're not usually faked. I was wondering what makes the price of a jaw vary so much? I won this as an auction so the price doesn't necessarily represent quality but I was fairly sure it's real. Certainly the teeth seem to be. However, I've heard the jaws themselves can be made and the teeth then set in to it. As there's not a lot of detail to go on, is there any way of authenticating them? I'm really happy with what I've got regardless. Aesthetically it's a nice jaw. I can't find any for sale that are identical at least! Any tips appreciated! Thanks.
  7. Mosasaur premaxillary bones

    From the album Marine reptiles and mammals

    2 unidentified mosasaur species' anterior end of premaxillary bones. One with teeth broken off just beyond the skull, and the other has 2 remaining teeth, with the rest broken off at the level of the skull. the larger fossil was found in the phosphate mines of Khouribga, Morocco. ive since lost the information for the smaller fossil, sadly.
  8. Mini Mosasaur collection

    From the album Marine reptiles and mammals

    A little collection of assorted mosasaur fossils from 2 different places that I got when I first started collecting. 2 different types of vertebrae, one is mosasaur, and the other is a questionable claim of mosasaur, a corprolite that was claimed to be that of a mosasaur, a tooth, & 7 rib fragments. 2 ribs have predation marks, as well as the large vertebra. The large vert has a round tooth indent on the very center. The 2nd rib down has tooth scratches along the surfaces, & 3rd rib down has a round tooth indent in the center, which is probably what caused a strip across the middle to break off. There are 2 other tooth marks on that rib as well, forming a diagonal line from above left of the center indent, breaking off a piece along the top, to below right.
  9. Mosasaur vertebra

    From the album In-Situ Shots(various locations)

    9-2-18 Collin County, TX
  10. I took delivery of this jaw today. I bought it over the weekend, having seen it and been offered a reasonable price on it. The initial pictures I saw were of very poor quality (the one above is mine), and it looked relatively convincing. In further photos, it also looked pretty convincing. The seller, I should point out, was not an expert or commercial seller, he was someone who'd bought it a few years ago and now wanted rid of it. Some of you are probably looking at the photo above and thinking to yourselves 'that's not at all convincing, what were you thinking?', and you'd be right to think that, since all of the teeth are fake (or rather, the roots are fake and the crowns were composited in). I've been collecting these jaws for several years, and I really should have known better. Dodgy photos or not, something doesn't look right about the alignment of the teeth or the shape of the roots. I let my enthusiasm get the better of me, as a result of which I splurged money I could ill-afford on something which is mostly faked. The jaw bone is entirely real, but there's not an awful lot of jaw to speak of. That said, it wasn't very expensive and is, if nothing else, an interesting piece of ethnographic art, and far better than those dismal $25 fakes that you see everywhere. One of the things that helped convince me was the tooth on the far left, which I felt looked quite realistic: The teeth on the right are less so, with roots which bulge in every direction, which appear to end at the point where they touch the matrix, and which in one area appear to be smudged on top of the jaw bone. They aren't the worst fakes I have ever seen, but they aren't great either. Up close they appear to be the usual mix of brown-ish plaster and sand. I post this as a warning, really. If you're ever unsure, post it here before buying, if only for a sanity check. You don't necessarily need to be a newbie to make a newbie error (although it helps if, like me, you're an idiot).
  11. Mosasaur or crocodile teeth?

    Dear all, I started this new topic to receive your help in identify those teeth. I bought them many, many years ago as crocodile teeth. I do not remember exactly, but maybe I bought the bigger one in Morocco (not sure!). Today I would say that are mosasaur teeth. Crocodile or mosasaur? Thank you!
  12. Mosasaur skull/jaw elements question

    I have been offered this mosasaur jaw section, and am looking for some information on what parts may actually be here. There are two sections of jaw (the one on top very thin, which makes me wonder if it may be a pterygoid jaw?), although the bones on the right confuse me - are they part of the back of the skull? I'm not sure quite what to make of it, since it's not what you normally see. Based on this picture (the only one I have) I would say that the teeth have been butchered, but this blurry photo is all I have to go on. Any comments on the piece would be welcomes. I shall tag @LordTrilobite since he is very good at these things!
  13. While I was cleaning up my room, I came across this drawing of a rather elongated and serpentine Tylosaurus in my seventh-grade school binder. Thought that I could give it some light here. This drawing is unfinished, but I'm not an expert in handling antique documents.
  14. Purchased this one from an auction site for fairly cheap. I'm sure actual tooth is real but is the root matrix real as well especially if coming from Morocco? Thanks!
  15. Bought this skull a couple years ago at a gem show. It seemed that the seller wasn’t even sure what it was themself, but claimed it might be a mosasaur skull. It was the only one they had and the rest of the stuff they sold was teeth from North Africa such as Carcharodontosaurus and Spinosaurus teeth. There are some parts that make it look real to me but if it is real, I’m not sure what it would be from.
  16. Dear fellow forum goers, These past few weeks have been quite busy, but that has not stopped me from going on the occasional fossil excursion. A few trips went by since my last posting and I decided to let some trips accumulate before posting again. On these trips I interacted with forum members @Woopaul5 and @frankh8147. The most recent trip was today, 08/12/18, and was somewhat productive. Frank found what we believe to be a part of a mosasaur brain case, which will surely be in his "finds of the year list". I was not as luck but ended up scoring a small point fragment and a jaw section of some fish. There were also some nice quality teeth that I found today. Other than this trip, I scored some nice finds on a few other trips throughout the two months. I hope you enjoy the finds, as I enjoyed finding them, and have a nice day. Kind regards, Trevor Overall Finds Stream Worn Shark's Teeth
  17. So, when I came here I had a “collection” of only 1 object, a mosasaur tooth which still has a special place on the shelf! Now I can also call myself the proud owner of a piece of amber with a small flower, a mosquito and another small insect I can’t really identify because it’s simply just too small. And a fossilized fish, now all three things are not the biggest, but for me they are amazing! They look good and it’s so weird to hold them thinking that once, millions and millions of years ago those animals were alive and kicking. I bought all three fossils at my favorite Dutch fossil reseller, he’s a friend of mine I got to know at a fossil exhibit he was giving in the city I live in. I often just visit him to go look what he has new! Anyways too much talk, you guys and galls are probably waiting to see my collections. Well, here it goes!
  18. Mosasaur teeth identification

    Hi! Any help I can get with identifying these mosasaur teeth would be much appreciated , or if someone can provide me with some good links/pictures on how to identify them. They are all from Khouribga phosphate mines. They are small teeth ( 20-30 mm) and not in top notch condition but still it would be fun to know what kind of species they belong to. I´ve numbered the teeth to make it easier to describe what tooth your talking about. Thanks/Patrik
  19. Is this a baby mosasaur tooth?

    I bought a chunk of sediment from Morroco from a fossil dealer a couple of months ago and I found some shark teeth, shark vertebra and this mosasaur tooth. What’s really interesting is that it’s extremely small. It’s a little bit bigger than my pinkie nail. Could this be a baby mosasaur tooth. (Note that I had some repair done to it.)
  20. Hello, I recently found this bone fragment in Monmouth County New Jersey (Cretaceous) and was wondering if anyone knew what it was. My best guess is a Mosasaur tooth socket but the bone texture looked off to me. For comparison, the last picture is of the fossil in question compared to prior finds which were identified as Mosasaur tooth sockets. As always, all help is greatly appreciated!
  21. Hey all, I recently picked up a mosasaur tooth, relatively large (2 inches) at a local rock and minerals store. It was for a great price, but from my standpoint it seems too good to be true. Some help here would be much appreciated
  22. Moroccan Platecarpus tooth?

    I once went to a rock shop in Utah a few months back and they had a wooden box with Moroccan mosasaur teeth in it. Most of them had no tip and kids were messin with the teeth causing more damage. I rescued this one and got the tip to and repaired it. However, I see a similarity of the tooth to one I saw in Kansas that belonged to Platecarpus. Could this tooth be a Platecarpus tooth from Morocco?
  23. I bought this tooth from a fossil dealer in Utah 2 years ago. I then somehow after that time noticed a strange mark on the bottom of the tooth where it attaches to the root and that there’s a sand like line going across the middle of the tooth. Could this be repair or fabricated teeth I’m seeing?
  24. I have been looking at this fossil to purchase for my collection and I am paranoid that, like many other Morrocan Mosasaur jaw fossils, this could have faked elements. I was wondering if anyone could spot anything wrong with this fossil.