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  1. There is a new centrosaurine ceratopsid from New Mexico described here: https://link.springer.com/article/10.1007/s12542-021-00555-w If anyone is unaware, the holotype of Menefeeceratops sealeyi was initially described by Williamson (1997), who refrained from from giving it a name because the holotype was incompletely prepared at the time of its initial description. With the description of new centrosaurines from southern Laramidia over the past decade, the exact relationships of Menefeeceratops to other centrosaurines have now been possible to decipher. Williamson, TE
  2. Troodon

    Deinosuchus from New Mexico

    The attached paper describe six osteoderms, two vertebrae, and a partial tooth discovered in the Menefee Formation of New Mexico and representing one of the earliest occurrences of Deinosuchus on the Laramidian subcontinent. https://peerj.com/articles/11302/
  3. The first is a strange tooth whose crown extends far into the root. As you can see on the photos, there is a bulge at the bottom of the crown, and that the root extends up the sides of the crown quite a ways. Any ideas?
  4. ThePhysicist

    Bull Canyon Microfossils

    I got many bags of micromatrix to sift through over the Summer, one of them being from the Bull Canyon Formation, which is Late Triassic in age (~227-208.5 Ma). As has been said many times before, not much is known about the teeth that can be found here, unfortunately. The vast majority of fossils that I've found so far are fish scales, lots of fish scales. I've found a few teeth, serrated and non-serrated (mostly partial), a couple of tooth plates/jaw fragments, and random chunks of bone. The matrix is about medium grain size. For scale, the sorting dish I'm using ha
  5. Day two of posts. I am posting four more fossils that I need help with. The first is a fragment. It looks like the tooth broke off right before the main cusp. There are two accessory cusps, the larger one looks like it has striations. This caused me to think of Cretodus semiplicatus. However, according to Welton, this shark only has one set of accessory cusps, never two. So any ideas?
  6. The final tooth of today is problematic in that it is a fragment. The main cusp seems to be complete, but that is all I can offer. Any help with this one? More to come tomorrow.
  7. The second tooth of today, at first glance, looks pycnodontid. But in the hundreds of pycnodont teeth I have found, I have never seen this type of ornamentation. And the root (as worn as it is) is definitely not that of a pycnodont. Any ideas?
  8. This is the other post that I was not able to find on the Forum (I'm sorry if I am just not finding it) This seems to be an odontaspid of some kind, but it is exceedingly small. Any ideas? I will be posting four more unknowns later today
  9. Hello all! I have finally finished sorting close to 300 pounds of anthill from north central New Mexico. I recovered (literally) close to 18,000 fossils! Most are identifiable, but there are a few that I can't put a name to. I am going to put up several for your expert analysis (not being facetious, you guys have an enormous amount of knowledge!) to see what you have to say. I will repeat this introduction for each grouping of photos, only changing the take number. Thank you all in advance! This fossil shows the internal structure that I normally see in Ptychodus. But when I flip it ove
  10. Sinestia


    I am posting new photos of the original item in question in addition to photos of some of the other finds. I sincerely appreciate everyone's comments and interest in this subject and above all I thank you for your time and patience. I will not cover anything from the original thread simply for lack of time so I suggest you reference "bone fragment" if needed. So the following photos are of just a few of what has turned out to be something wonderful in my opinion. The items that I and a trusted friend have uncovered are either not much at all or something very awesome. Again this is only a sm
  11. Hello all! I have finally finished sorting close to 300 pounds of anthill from north central New Mexico. I recovered (literally) close to 18,000 fossils! Most are identifiable, but there are a few that I can't put a name to. I am going to put up several for your expert analysis (not being facetious, you guys have an enormous amount of knowledge!) to see what you have to say. I will repeat this introduction for each grouping of photos, only changing the take number. Thank you all in advance! This fossil is somewhat like a cretolamnid, but is very small. An extreme cretolamnid lateral to
  12. Sinestia


    This is one out of the mystery box I purchased so no clue as to its orgins. It is also very heavy therfore dense.
  13. Sinestia

    A little help?

    As mentioned in my opal post this was also in the mystery box and was looking for any ideas. About the size of a deck of cards.
  14. It was hard to believe that six years had passed since I last visited the badlands of the San Juan Basin...if you are interested, I posted a few of those previous trips here and here. With a new field season upon us, @NMFOSSILS99 and I made our first (of hopefully many) exploratory mission to the Upper Cretaceous Kirtland/Fruitland badlands of the SJB...
  15. Sinestia

    Possible tooth?

    Found this roadside while taking dogs for a walk. Its a long dirt road going north to south and ends at Hidden Valley Ranch, Luna County New Mexico. It is likely nothing but I found it worthy of asking.
  16. Sinestia


    Was really thinking freeway travel center souvenirs when I found this one any help would be great.. I did enhance the images just a bit as in contrast and brightness to better show it.
  17. Sinestia

    Tooth or claw?

    I was super excited when I found this piece earlier this week while mending fences and would appreciate any help..
  18. gdsfossil

    Guadalupe Mountains National Park

    I found this a few years back near (but not in) Guadalupe Mts National Park. Is it a sponge, coral, algae, or something else? Piece is about 6 inches across. Thank you for your help.
  19. Sinestia

    Possible vertebra?

    I have a little over 60 acres here in Southern New Mexico so I find some great specimens almost daily, unfortunately my knowledge in this field is minimal at best so I am grateful to read your comments and very eager to learn.
  20. Sinestia

    Fossil or artifact?

    Very new to the forum so my apologies if I am incorrectly posting or otherwise. I am an avid meteorite hunter and have been for over 30 years so I do run into many fossils and artifacts so with that said I have many to show and many questions to ask . I'll start with this one and would appreciate your input on what this might be.
  21. Scylla

    Godzilla Shark

    Full skeleton of a 300 million year old shark found in New Mexico nicknamed the Godzilla Shark has been officially named dracopristis. https://news.yahoo.com/news/godzilla-shark-discovered-mexico-gets-204437107.html

    The Rio Puerco Valley

    The Rio Puerco Valley was my introduction to fossils...it immediately caught my attention...lit a match...became a place I am always eager to revisit...search...learn about... ...and in roaming it, have learned about myself. Many of my adventures in the Puerco are posted here, here...here and here...and here. From here on out, my excursions will be shared here. May you find happiness in your hunting. -P.
  23. Is anyone familiar with the Paleozoic formations on Bear Mountain, just northwest of Silver City, New Mexico? I have collected there a couple of times but am unsure as to which formation I was sampling. My first guess is that it is the Andrecito Member of the Lake Valley Limestone (Mississippian (Early Osage) but I know that there are also fossils found in the underlying Devonian Percha Shale, especially east of Silver City. There are a variety of brachiopods, bryozoans, rugose corals, and some crinoid bits. The photos show one of the larger brachiopods. Do you recognize it? Thanks.
  24. This carnivore coprolite was found in the Bull Canyon Formation (Upper Triassic - Norian), Quay County, New Mexico. It contains numerous fine, boney inclusions (white). There also appears to be a small jaw inclusion that has a shape similar to amphibians. Originally, I couldn't figure out why there would be so many finely crushed bones. It is not something I usually see. When bone fragments are present, they are usually larger. That said, fibrous osteoderms are also found in the same area. I have included an image of a fairly large one. They are made up of fine, boney fibers that have a confi
  25. Friday was a second trip out the the Windmill sites with a quad and a geologic map overlay. I scouted out a site further north that was across the arroyo. I am a geologist by training but not so much about fossils or minerals, mostly tracking layers and mapping.
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