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Found 15 results

  1. Hi! I recently aqcuired quite a lot of "microfossils" to kick off my Triassic collection, as I personally find it one of the most interesting time periods and while I am aware possibly not all of them are ID'd correctly I just wanted to get some nice fossils from this time period regardless of their ID's. All the fossils I acquired are from the Bull Canyon Formation, Dockum Group, San Miguel County, New Mexico, USA (Norian age) But I myself am not very knowledgeable yet in this material as I just started my collection but I am aware that some if not most of the ID's on these fossils given by the seller might be wrong as everything I read about the Bull Canyon formation says that the formation isn't that well discribed yet. I tried to make the photo's as good as I could, but it wasn't always easy given their extremely small size, so I hope the quality is good enough to work with. So I am kinda hoping is someone here on the forum would like to give it a try to see if he/she could confirm or disprove given ID's. Thank you in advance! The first set of 2 teeth were listed as the Phytosaur "Pseudopalatus" teeth which after doing a bit of research is considered a junior synonym for "Machaeroprosopus" The next collection of 3 teeth were listed as the Pseudosuchian "Revueltosaurus" The next tooth was listed as a "Theropod indet" tooth, and I know there are at least 2 species of theropod present at Bull Canyon, a Coelophysid called Gojirasaurus and a herrerasaurid called Chindesaurus. But I am not even sure whether this tooth is dinosaurian or not. The next set of teeth were listed as "Arganodus" lungfish teeth And the final tooth was listed as a "Sphenodont" (Rhynchocephalia indet.) tooth with affinities to Clevosaurus (which is found in Nova Scotia, Great Britain and China)
  2. ID please Dinosaur tooth

    Hi all I spotted both these teeth on our favourite Auction site. They are really not much money but I also don’t have not much money, so I thought I get a second opinion. @Troodon yesterday you said if I remember right (sorry I can’t find the original post) Coelophysis from the Triassic Bull Canyon Formation of New Mexico has not been described there as yet. Fabrosaurus from the Triassic Bull Canyon Formation of New Mexico. If they look good to the forum . I hope I can get a couple of Triassic dinosaur teeth for the price of a chicken dinner . Thank in advance and sorry to bother you again Frank.
  3. Coelophysis Teeth

    Hello all, I was browsing on our favorite auction site and I found a dealer who is selling a pair of Ceolophysis teeth for a rather cheap price, which sent off a warning flag in my mind. The dealer claims that these are from the Bull Canyon formation of New Mexico. Are these teeth real or are my suspicions correct?
  4. Pseudopalatus Tooth

    Collected on private property owned by Larry Martin.
  5. Welcome to another microscopic look into the wonderful world of coprolites. Here we have a squished (flattened) spiral coprolite from the prehistoric floodplains that now form the Bull Canyon Formation in the badlands of Quay County, New Mexico. Today's mystery was most likely not ingested. Many times the posterior (non-pinched end) of spiral coprolites can be hollow. I may be wrong, but I think this branchy thing (for lack of a better term) slipped in after it was expelled. To me this looks like part of a branch from a delicate coral - but the poop was in fresh water. Any ideas?
  6. I was going through a large group of very small Triassic coprolites today and came upon this. Since there was a beat up Koskinonodon tooth in with the coprolites, I'm wondering if this could be a jaw or maxillary fragment from a juvenile. The person who found the coprolites said that he found a lot of Koskinonodon teeth in the area as well some from Phytosaur, Apachesaurus, Coelophysis, Postosuchus, and Revueltosaurus. What do you all think? Jaw or maxillary? Amphibian, fish or something else? If this is amphibian, can anyone identify the bone above and to the left of the teeth? My cat votes amphibian @Carl check it out!
  7. This osteoderm was in a box of Bull Canyon Formation (Triassic - Norian) coprolites that I have been going through for the past year. The fun thing is, I one of the coprolites in this batch appears to have osteoderm inclusions that look very similar. I have looked at well over a thousand coprolites from this formation, and this is the first time I have found inclusions such as these. Needless to say, I am super, super excited!!!! Best I can figure it is from an aetosaur or phytosaur, neither of which are familiar to me. I did send an email to the person that found them to see if she is able to identify it, but thought I would throw it out to the forum at the same time. Any assistance you provide would be greatly appreciated. @Carl check it out!
  8. Peteinosaurus tooth?

    Hi, i was looking online and i came across a website that has a small tooth labelled as Peteinosaurus (from the Triassic). My question: is this legit? Because i tried doing some research on this pterosaur and apparently Peteinosaurus material has only been found in Italy (near Cene) while this is labelled as coming from the Bull Canyon Formation in New Mexico and i can't find any pics online of Peteinosaurus teeth to compare it to. I would love to add a triassic pterosaur fossil to my collection but i can't be sure if this is the real deal.
  9. Dear Forum members, I own a few microteeth which are said to be from the Bull Canyon Formation of San Miguel County, New Mexico. I have tried to find a scientific paper on the Bull Canyon Formation locations of San Miguel county, but I can only find Garita Creek Formation locations. Does anyone know where in San Miguel County all those micro teeth come from? Is it really Bull Canyon Formation or another formation? Thank you for your answer, Sander
  10. I have two Triassic coprolites from the Bull Canyon Formation, Quay County, NM. The first one has an impression/imprint that I have not been able to identify. The second has a protrusion sticking out of it. I had hoped that by prepping out the the protrusion, I would get lucky and it would match up with the marks on the other. Unfortunately, I now have two things that I can't identify. @Carl 1. Is there anyone out there that wants to take a stab at identifying the imprint in this one? It does appear that there are some remnants (white) of whatever it was that made the marks.
  11. The location where this was found contains both aquatic and terrestrial animals from floodplain habitat. In this coprolite, a small tooth plate impression with residual fragments can be seen on the surface. Since a similar tooth plate was not found within the coprolite itself, it is unclear whether this is an undigested prey remnant or if it was embedded upon deposition. An unidentified bone and numerous fish scale inclusions were revealed using X-ray computed tomography. This specimen was scanned in April 2016 by the University of Minnesota X-ray Computed Tomography Lab using a X5000 high resolution microCT system with a twin head 225 kV x-ray source and a Dexela area detector (3073 x 3889 pixels).
  12. Hi all, I just received a new batch of coprolites from the Bull Canyon Formation (Upper Triassic), Quay County, New Mexico. These two had some unusual inclusions that I have not seen before. I'm thinking fish skull or gill parts? (Please ignore the spelling in the title... ) Coprolite 1: This coprolite also contains other fish scale/bone inclusions.
  13. Hi all, I found this impression in a Triassic coprolite from the Bull Canyon Formation, Quay Co., NM. It is hard to see in the photo, but there appears to be bits of enamel/bone still stuck in some of the cavities left by whatever made the impression (shows up white). Best I have been able to determine, it was left by the tooth plate from the lower jaw of a lungfish. Can anyone confirm this for me? Isn't poop just the best? Thanks for looking!
  14. Hi all, A while back, I acquired about 160+ coprolites from the Bull Canyon Formation in Quay Co., NM. As some of you may know, I have been doing a little experimenting by dissolving them in vinegar in order to study the inclusions. Prior to dissolving them I always scan candidates with the microscope. While scanning, I came across this interesting specimen. It reminded me of the segmented worm coprolites that I found crab exoskeleton that you all helped me identify (LINK) a while back. This specimen is quite a bit different in that it has the general shape of a crab exoskeleton, but none of the features you would expect to find on the underside of a crab nor an opening for a head. The people that collected this said that they have never found crabs in the area, but have come across bivalves. However, this doesn't really look like a bivalve to my untrained eye. What I believe to be tiny coprolites on (and possibly contained within) the specimen are the pellet shaped items on the microscopic image. I would like to get the opinion of all you experts on crabs, bivalves, and coprolites out there. What do you think the host fossil is?
  15. Hi all, I decided to dissolve a small piece (12 mm dia. x 15 mm long) of Triassic coprolite from the Bull Canyon Fm., Quay County, New Mexico, in vinegar. After sitting for a week, numerous scales ranging in size from 0.5 to 2 mm long along with 4 partially digested bone fragments were revealed. If anyone out there is familiar with Triassic fauna, do you see anything recognizable? All photos are taken at 40X magnification. Triassic Treat #1 is about 3 mm across and still resides in what is left of the coprolite. Triassic Treat #2 is about 3 mm long and curves along the outside of remaining bit of coprolite (which now has a diameter of 12 mm) Triassic Treat #3 is about 3 mm across and 1 mm wide. Triassic Treat #4 is about 2.5 mm across and 1.5 mm wide.
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