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  1. readinghiker

    Strange ptychotrygon

    I'm coming to the experts once again! This is a very strange ptychotrygon tooth. It appears to be P. triangularis, but it is so elliptical. The low crown is similar to some of Bourdon's P. eutawensis, but according to Woodward's original description, there is a bit of ornamentation on the labial apron, which this doesn't have. Could this simply be a pathological tooth? Thanks!
  2. I took a geology excursion a couple of weeks ago, and had the chance to explore the I-40 road cut through the Gallup Hogback east of Gallup, New Mexico. Rather to my surprise, I came across a nice oyster horizon within the Mancos Shale. I realize the preservation is sketchy enough to make precise identification difficult. I'm wondering if these might be "baby" Inoceramus. I'll try to post some better pictures of samples I brought home later. And, since I consider myself lucky if I even get the right phylum -- I suppose another possibility is ostracods.
  3. I'm going to be taking a trip to the southwest (Colorado, Utah, New Mexico and possibly Texas) pretty soon, and I was wondering if anyone could give me some ideas as to where I could go fossil hunting. I'll provide the specific areas we'll be traveling to; I also previously lived in Colorado and have already found a few good sites, but would definitely be open to any other suggestions. Colorado seems pretty promising with some good fossil quarries (Florrisant Fossil Hunting and the Morrison Museum), and I grew up with the Denver Museum of Nature and Science as well as Dinosaur Ridge. I'll
  4. readinghiker

    Cretodus cf. semiplicatus?

    Hey all! I have this tooth that appears to be a cretodus. It has plications on both the labial and lingual faces, with the lingual plications being smaller than the labial. Cretodus so far. Iy measures 3.88 mm in height and 3.42 mm mesio-distally, The problem arises with the accessory cusps. Welton and Farish state that Cretodus semiplicatus only has one accessory cusp on each side of the main cusp. Although one side of the cusps is missing, the other side obviously has two cusps. Was Welton and Farish mistaken, or is this tooth not even cretodus? Thanks! Randy
  5. I found this on BLM Land near Guadalupe Mountains National Park. No idea what it is. At one point I was hopeful it was a mammoth tusk. Help?

    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.
  7. David Joyce

    Searching for age of fossil

    This stone was found 40 years ago in the Santa Fe National Forest in New Mexico. I am trying to date the fossils. I guess it is Cretaceous but I am a newbie.
  8. I have collected quite a few interesting fossils from the Redonda formation, and I will be posting to this thread as I take photos. Two very large vertebrae to start- likely belonging to the Phytosaur Redondasaurus.
  9. I have gone through all of my Redonda formation teeth, and think these ones are likely theropod, possible Coelophysis. Any insight would be greatly appreciated! Tooth 1: 7mm long, serrations ~8/mm along middle of posterior edge.
  10. rojstal

    Help identify tooth please.

    I found this tooth In desert near Albuquerque New Mexico. Could it be some kind of marine reptile? I would appreciate any ideas about ID. Thanks
  11. Uncle Siphuncle

    Anniversary Ammonite Adventure

    My wife and I had a Belize trip scheduled last week to celebrate our 9th anniversary, but canceled it last minute to avoid Covid related travel inconvenience. Taking travel logistics back into our own hands, we threw together an impromptu driving itinerary to some wonderful parts of northern New Mexico, courtesy of our tenured friend, Pee Fooley. While Pee couldn’t join us, my wife’s Jeep faithfully delivered us to panoramic environs many miles off pavement. The air was crisp, skies clear, and the ground was dry. Biting winds kept us bundled up. I figured cell service might be
  12. I found this in the hills between Lordsburg and Silver City, New Mexico. Appears to be 90 percent chalcedony or quartz. Made up of small grains all oriented along the length of the stone. Thanks.
  13. readinghiker


    Going through some scapanorhynchus teeth to photograph for a museum bulletin I'm working on, I came across this tooth. It is different in that there seems to be at least one striation on the labial face. The striations on the lingual face are pretty distinct, but seem to be worn (depositional wear?). Could the labial striation also be depositional wear? But the really odd thing is the pair of cusplets. Scapanorhynchus raphiodon and Scapanorhynchus puercoensis are both found within 25 miles of this site, but the cusplets on these species are smaller in relation to the
  14. readinghiker

    Unknown Schlerorhynchid from New Mexico

    Hey all, I am having a heck of a time trying to identify this tooth. Both Shimada and Kirkland suggest that it is a schlerorhynchid, but I have not found anything in the literature that resembles this morphology. The shoulders of the tooth are slightly oriented labially, the apical cusp is rounded (due to deposition or weathering? If so, why is the keel still so pronounced?), there are no transverse ridges, there is a fairly large lingual uvula, and there is a single arched lingual ridge on each shoulder. This one has me stumped! Any and all help will be greatly appreciated!
  15. readinghiker

    Orectolobiformes resources?

    Hey all, does anyone know of a good source of information for the identification of orectolobiformes? Or someone I could contact concerning these sharks? I have five teeth that most likely belong to different species, but have been having a hard time with their IDs. I am going through Cappetta's 2012 handbook, have gone through Welton and Farish, and looked up orectolobiformes on the Fossil Forum, to no avail. I will most likely be posting pictures later today or tomorrow. Thanks!
  16. Bought this piece at a Rock and Mineral show and according to the specimen labels that were included with the specimen. It has passed through at least 3 different fossil dealers. Each one stating the following information: Crocodile Scapula Locality: San Juan, NM, (USA) Now I suspect this piece is from the Triassic time period and could possibly belong to a large Temnospondyl amphibian and is a skull fragment not a scapula. Does anyone here recognize the patterning and thickness change enough to give an educated guess as to what it might actually be from?
  17. 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, @Opuntia and I made our first (of hopefully many) exploratory mission to the Upper Cretaceous Kirtland/Fruitland badlands of the SJB...
  18. readinghiker

    Unknown Coniacian teleost?

    These tiny teeth (?) have me stumped, as did a bit of the Cabezon fauna I am working on. This site has been very helpful in identifying some of the rarer fossils, and I am asking for your help once again. At first glance, I thought these four dots were fungal or some other type of current plant material, but examining them under a microscope I am pretty convinced these have enameloid structures. Any idea of what they could be from? I am assuming some form of teleost at this time. Thanks for all of the help, past, present, and future!
  19. A number of collectors are very interested in Triassic Dinosaur tooth material, however, lots of misinformation exists, partially because little is known and dealers want to sell product. My knowledge is very limited so I tried to put together an assemblage of current information that has been published so that we can all become better versed on this topic. I'm not saying its complete but its the best I can do with my limited knowledge. Most technical papers on this subject are outdated, difficult to read for a novice and not complete enough. Fortunately a recent, legible paper was publ
  20. Went out today to check out the well known windmill site. I've been to this location 3 times now and being a noob it took me this long to finally start understanding the area and finding what I was looking for. Thank you PFooley for all the help. We've had a blast out there! I found this cool rock with shells all through out it flipped it over and found this: also found some cool crystals too
  21. Hello, I was out fossil hunting the other day and found this. At first, I thought it was a piece of ammonite and I am very new at this so I have no clue really. I have found a few ammonites now and the more I look at this thing the more I think it looks different. It's very clearly what looks to be bone(?) or solid shell that is the same shape on both sides, it has 7 extrusions going around the sides of the bottom half and the second half of the upper bone portion has broken off. Any ideas? Thanks
  22. readinghiker

    Unknown teleost (?)

    Hey all! This small jaw fragment was in the thousands of fossils pulled out of anthills. I am assuming it is a teleost. Other than several species of sharks, rays, and sawfish, there are pycnodonts, enchodus, and Protosphyraena. This looks like nothing I've found yet. Any ideas?
  23. dana hausen

    New Mexico Mud Fossil???

    I discovered this rock at the bottom of a dried arroyo in New Mexico this past June. I'm thinking it is a mud fossil. What do you think?
  24. readinghiker

    Unknown lamniform

    Hello all! I have around a dozen of these teeth. (Found in New Mexico. Coniacian.) The very prominent lingual protuberance should be diagnostic, but I can't find a match. Eostriatolamia tenuiplicatus looks good, but the crown has striations, and these don't. Archaeolamna kopingensis also looked good, but the secondary cusps of this species are oriented away from the main cusp. Leptostyrax macrorhiza also has labial striations. The narrowness of the cusps and crown also has me baffled. Any ideas?
  25. Good day, all! Can anyone tell me the differences between Myledaphus and Pseudohypolophus? All responses will be greatly appreciated!
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