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Found 185 results

  1. Hi, I'm a brand new fossil hunter in New Mexico looking for some places to start looking and exploring. Can anyone recommend any good sites to start out? I'm interested in the Rio Puerco valley, but the only site I've found so far with listed coordinates or good specific directions is the Windmill Site, whose forum post is a decade old, and even a decade ago people were saying it was starting to get pretty sparse and picked clean. Is there anywhere else in the Rio Puerco valley area (or really anywhere within a couple hours' drive from Albuquerque) where someone could give more specific directions or coordinates? I imagine it's not as easy as just picking a random spot in the valley to look lol.
  2. 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 Most technical papers on this subject are outdated, difficult to read for a novice and not complete enough.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 published in 2015 by Heckert & Lucas that has helped me. I've tried to extract the pertinent information, associated with teeth, since that what most collectors are interested in. First let me get on my sandbox and say that we should NOT assume that what is being sold is accurately described regardless who is selling it or how much you like a dealer. Very little is known and even less is described. If a seller insists what he has identified is accurate, have him show you the technical documents that supports his diagnosis. There are a number of theropods and archosaurs in these assemblages that have serrated teeth so identification is difficult. Triassic dealers similar to those in the Kem Kem which label everthing Spinosaurus like to label everything Coelophysis. Just be cautious..its your money. Almost all the teeth you see sold come from New Mexico so I will focus in that region. A Map of New Mexico with the Triassic outcrops shown below as well as the associated Counties. The numbers correlate to the stratigraphic formations shown below in Figure 4. Figure 4 The Zuni Mountains in West-Central NM are from the lower Chinle Group (Bluewater Creek Fm) and contain Tetrapod fossils amphibians and phytosaurs and aetosaurs. Dinosaurs are possible but nothing is diagnostic. Faunal List of the lower Chinle Group Zuni Mountains Northern/West Central New Mexico has yielded some of the most interesting Vertebrate Fossils most associated with Coelophysis at Ghost Ranch. Included in this group are the Petrified Forest and Rock Point Formation of the western counties. Chindesaurus bryansmalli, Tawa hallae and Daemonosaurus chauliodus are considered valid a dinosaurs in the Petrified Forest Fm. Coelophysis bauri is valid from the Rock Point Formation. Faunal List of the Petrified Forest and Rock Point Formation - Key on this list is Coelophysis bauri in the Rock Point Fm Northeasten New Mexico (Bull Canyon and Redonda Formations). Heckerts 2015 paper comments that dinosaur fossils remains are rare in the Bull Canyon Formation. The coelophysoid Gojirasaurus quayi has been described but its taxonomic placement is uncertain. Herrerasauridae tooth fragments have been found but nothing has been assigned to a taxon. Heckerts & Lucas 2015 Paper on Triassic Vertebrate Paleontology in New Mexico https://libres.uncg.edu/ir/asu/f/Heckert_Andrew_triassic.pdf Bull Canyon Formation 2001 Paper on Vertebrate Fauna https://nmgs.nmt.edu/publications/guidebooks/downloads/52/52_p0123_p0151.pdf Latest placement ( Hans-Dieter Sues et al 2011 ) Identifying Coelophysis bauri Teeth - There is lots of variation their teeth and I will show a few types. The Museum of Northern Arizona publication Coelophysis describes the teeth as follows: All the teeth are recurved Premaxillary teeth: rounded cross-section, smaller teeth are ribbed but smooth on larger ones. None show serrations. Maxillary Teeth: the first tooth is recurved with no serrations, second tooth has serrations only on the posterior carina. All the other maxillary teeth have serrations on both edges. Some of the teeth the serrations may be limited to the upper part of the anterior (mesial) edge. Dentary Teeth: the first seven teeth lack serrations, eight tooth serrations only on the posterior edge. Subsequent teeth have serrations on both edges. The first four teeth are elliptical (rounded) in cross-section being compressed after that. Anterior teeth may contain ridges. Serrations are very fine 8 to 9 per millimeter on the posterior (distal) edge. (other publications say 7/mm) Distal Carina Denticles Premaxillary, Maxillary and Dentary teeth shown - Dentary tooth Maxillary Tooth Anterior Denticles Posterior Maxillary Tooth Paper on Coelophsis Teeth by Currie and Buckley Coelophisis.pdf Additional images of the teeth with no supporting info Good overall paper on C. bauri but does nothing to increase our knowledge on how to describe its teeth https://www.researchgate.net/publication/292525024_The_paleobiology_of_Coelophysis_bauri_Cope_from_the_Upper_Triassic_Apachean_Whitaker_quarry_New_Mexico_with_detailed_analysis_of_a_single_quarry_block Ken Carpenter described these teeth from the Bull Canyon fm as cf Coelophysis. Other Theropods Gojirasaurus quayi : one tooth was described with the holotype however it was found isolated and cannot be positively assigned to this species. (Added a few pages below) Chindesaurus bryansmalli : not aware of any skeletal material Daemonosaurus chauliodus The paper does not get into detail on the teeth. See below http://rspb.royalsocietypublishing.org/content/royprsb/278/1723/3459.full.pdf Tawa hallae : http://www.thefossilforum.com/applications/core/interface/file/attachment.php?id=503864
  3. Hexagonal shapes unexplained

    I found this recently north of Hatch New Mexico. I was picking up lots of small quartz crystal clusters and thot this was maybe a cluster that got sheared off somehow. After a closer look and bit of a clean up I noticed the side views look like there is “stacked” formations. So the top has the hexagonal shapes and the sides look as if there is fairly uniform segments. The same general area has fossils like fusilinids, crinoid bits, shells at different levels. Also in the area rhyolite, chert and quartz crystal. Anyway, not sure if this is a fossil of some sort but have never found anything quite like it. PALEODICTYON is what came up when I googled hexagonal fossil. Certainly some similarities. Thanks for any help u can give me!
  4. Found Some Bone Today

    Hey folks, Here is a bone I found today. The photo shows it in situ as it was slowly sliding down a slight grade. The area where it was found does not permit collection by citizens so it remains where it was found. The area where it was found is along the ancient shoreline of the Western Interior Seaway on the west bank where the shoreline ebbed and flowed to engulf the immediate area, only to later be dry land at essentially the same level of strata. In the same immediate area where this was found, also today, I located fossilized stromatalite (a water bacteria), and fossilized wood. Within just a dozen miles of the area where I found the bone there have been collections of bone specimens ranging from mosasaurs to plateosaurid-type dinosaurs. Hopefully someone has an idea about this bone to enlighten someone who really doesn't know anything about it, namely, me. Location where it was found is in the San Juan Basin of San Juan County, New Mexico, Kirtland Formation, Upper Cretaceous period.
  5. Jay Dubya's Petrified Wood

    Friends, I seem to collect lots of petrified wood in my nearly-every-weekend outings into the oil patch in the county where I live. Much of what is found are small little bits and pieces and a whole lot of it is really pretty. Some I will try to identify and those may earn their own topic entry, however, others are just nice little pieces that I cut up on my saw and will post the photographs here for y'all to look at. They are just too pretty to not share, you know? All those entered under this topic will be found near my home unless otherwise notated. Some of the petrified wood will have been found by a buddy of mine whose rock I cut up for him from time to time, and those will also be notated here. If no one minds, I probably won't put a scale on the specimens since all of them will be no longer than 4 1/2" on their longest side since that is as wide as my little rock saw can handle. As usual, feel free to comment. Some of this stuff might really challenge your ability to readily recognize what is or what isn't petrified wood.
  6. A new domaeosaurid, Dineobellator notohesperus, consisting of a partial skeleton from the Upper Cretaceous (Maastrichtian) of New Mexico, the first diagnostic dromaeosaurid to be recovered from the latest Cretaceous of the southern United States. The holotype includes elements of the skull, axial, and appendicular skeleton. From the Ojo Alamo Formation Dineobellator notohesperus Article https://phys.org/news/2020-03-feathered-dinosaur-surviving-raptors.html Smithsonian Mag. Article https://www.smithsonianmag.com/science-nature/dineobellator-dinosaur-new-mexico-180974511/ Paper https://www.nature.com/articles/s41598-020-61480-7
  7. 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.
  8. For your review, here is a specimen of Palmoxylon, sp. (a fossilized extinct palm tree) found in March 2020 in the San Juan Basin of San Juan County, NM. The area is within the Kirtland Formation, Upper Cretaceous Period. This specimen has been cut to show several views of a transition zone in the root ball where adventitious roots or Rhizopalmoxylon, sp. emerge. The first photograph has been diagrammed to show several features in the transition zone. I have also submitted photos of this specimen in the March 2020 "Find of the Month" contest, and a more complete description of the specimen has been made in that entry.
  9. Coprolite verification

    Good morning folks. I purchased this box of coprolites many years ago under the description "Triassic carnivore fossil dinosaur coprolite, New Mexico". Did I do good or did I get taken?
  10. Fossilized Conifer, anyone?

    Some petrified wood found in northwestern New Mexico, San Juan Basin, Upper Cretaceous, Kirtland Formation a couple of weeks ago. The cut slabs are from a log about 6-inches in diameter and my best guess is conifer only because most everything else in that area turns out to be conifer, specifically, Cupressinoxylon sp. Any other opinion about species would be welcome. There are several nice agate bands running through the length of the log and are clearly visible here. The first slab is dry and the second is wet.
  11. NM Conifer from Upper Cretaceous

    A couple of photos showing an unknown fossilized conifer tree located this past November (2019) in northwestern New Mexico, Kirtland Formation, Upper Cretaceous. Sorry for no scale but the specimen is about 13 inches (33 centimeters) long. Also included is a photo of my dig where I removed this specimen as a piece of something larger. You will see this specimen limb is quite compressed, something common for petrified wood found in that area of New Mexico. I have tentatively identified the specimen as a conifer using a DinoLite (see photo). I am seeking help with additional information or identification beyond it being simply "conifer".
  12. I'm piling back in late from a fossil hunt and wanted to get this online. Found in a lower Pennsylvanian formation locally. Typically find cordaites and ferns in this formation. Today, this odd split pair caught my attention. For size reference the small calamite next to the split pair is a little over 5 cm long and 2 cm wide. Although not a great field shot I'm posting it up now in case someone can point me in a solid research direction. Part of me thinks cordaite but the unusual branching features on one side only are quite odd to me. Perhaps some sort of rhizomic structure? I will post a close-up tomorrow when I have access to natural light again. Thanks for any advice or suggestions, Kato
  13. Sponge? Coral? None of the above?

    Found in northwestern New Mexico in an Upper Cretaceous area. Specimen was wetted with water to bring out detail.
  14. Unknown selachian

    Moving on to another species. Any ideas as to what this might be? I have six in the collection from the Cabezon fauna. This is the only complete one (with all of the root). I will send four pictures . Thanks! Randy
  15. Polyacrodus

    Out of over 17,000 teeth pulled out of ant hills in north central New Mexico, I came up with this one isolated tooth. There are a scattering of other hybodontids in the fauna, but this is the only one of this kind. I originally thought this was Polyacrodus parvidens, but upon getting into the literature I have discovered that this species has a high central cusp and the ornamentation isn't as strong as that on this tooth. So now I am leaning to P. cf. brevicostatus, and if this is the case, would be one of the first examples from this state. Any ideas from all of the distinguished people on the Forum?
  16. Is it plant debris?

    Is it plant debris?
  17. Plant fossil

    What plant it could be?
  18. What could it be?

    I found it on the ground. What could it be?
  19. Something round

    What approximately could be those fossils?
  20. Bivalves from Cretaceous

    Could be some bivalves from late Jurassic or washed out from Cretaceous. Northen New Mexico. All from one place. Thanks.
  21. Something as fossil

    What could it be? Something curved in the rock. Thanks
  22. Looks as a bone

    What was it? Thanks.
  23. Turtle?

    Is it sea turtle carapace?
  24. Is it a fossil?

    Was is a part of an alive thing?
  25. 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
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