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Found 431 results

  1. Ichthyosaur Collection

    Hi Here’s another fossil I found over Christmas. These bones are pretty rare and are the articulated ischium and pubis from an ichthyosaur. No prep involved apart from cutting the block to size and applying a thin coat of varnish to increase the contrast between the bone and matrix. The fossil is from the Hettangian of Penarth. The block before:
  2. Hybodus fin spine

    From the album Triassic vertebrate fossils

    This is a 12 cm long Hybodus fin spine from a triassic "Bonebed" in a quarry in southern Germany (Baden-Württemberg). Its until now my best preserved fin spine from there. Some more pictures:
  3. Sauropterygia bones

    From the album Triassic vertebrate fossils

    A 20 cm long stone with a couple of bones from a triassic "Bonebed" in a quarry in southern Germany (Baden-Württemberg). On the plate are two vertebrae, one rib and two unidentified bones. The quality of the bones is partly not good (especially the vert in the middle is bad preserved). The prep was not too difficult but it took quite a long time to finish it. Some more pictures:
  4. Ceratodus (lungfish) tooth

    From the album Triassic vertebrate fossils

    A really nice and very rare 2.5 cm long Ceratodus (lungfish) tooth from a triassic "Bonebed" from a quarry in southern Germany (Baden-Württemberg). One of my best finds from there so far
  5. Fauna???? ID request

    Good morning forum. Can anyone tell me if this fossil is fauna or ????? It's from the early Triassic, lower Muschelkalk, Libiaz, Poland. Matrix is 70 x 50cm
  6. Hi, In 2013 I bought a keichosaurus fossil from online , and since then I haven't thought much of it, after me and my mum and dad moved to a new apartment the fossil got somewhat forgotten, but today I tried inspecting it. I read some of the treads here but even with this I can't decide if mine is a real or a fake one. From what I have gathered there aren't many outright fakes, but more so real ones that are enhanced. I will be glad to hear your opinion on the pictures (sorry for the poor quality but I had to use my phone). Any response will be very much appreciated. Best regards to everybody.
  7. Dear members, It’s time for another “review” of a palaeontological site I had the pleasure to excavate in. However this one is quite different from the others I already posted about: those were outcrops in Ohio, USA, where you could collect fossils freely or by signing a disclaimer. This time, instead, I had to operate alongside the institution that holds the concession to excavate and study the material. For fifteen days in August 2019 I excavated in the Late Triassic beds of Krasiejów, southwestern Poland, alongside the Institute of Paleobiology of the Polish Academy of Sciences, based in Warsaw. It is not the only “official” dig that I took part in, but, alas, the only I’m allowed to post pictures of! Krasiejów’s site has been exploited for the extraction of clay since the beginning of the XX century until 2002; the first scientific excavations took place in 1993 and the first publication was issued in 2000. Since then dozens of students and palaeontologists from all over the world have visited the site. The assemblage dates to the Late Triassic, but a more precise dating (Carnian or Ladinian) has not been assessed yet. Back then Poland was situated much southern on the Northern hemisphere, under subtropical conditions. Rivers formed extensive backwaters and swamps, separating islands from the dry mainland. Occasionally, intensive rainfall led to flooding that washed out skeletal remains and transported them to their final site of burial. Bones were then scattered and damaged, but rapid deposition led to their preservation. Krasiejów can therefore be classified as a Konzentrat-Lagerstätte. A section of the Bonebed is open to the public and it’s a truly mind-blowing sight! Dozens of skulls, mandibles and isolated bones of amphibians (later I’ll tell you exactly of which species) can be seen lying there since 220 million years ago. I pictured a small section of the bonebed, circling in yellow the skulls and in red the mandibles. The lithotypes that make up the outcrop are red claystone and grey pelites. Tools needed for excavating are geological hammers, pickaxes and shovels. That's what an usual day on the site looked like: The flora and invertebrate assemblage is not very rich: conifer cone scales and branches, freshwater bivalves and small arthropds. Fish were scarce and poorly preserved. In the case of lungfish, instead, toothplates were common: The most interesting aspect is represented by tetrapod bones: they are countless, even in my wildest dreams I could not have hoped of finding so many as I have! Metoposaurus was a temnospondyl amphibian characterized by a dorsoventrally flattened body up to 2 m (6,5 ft) long. Its bones are the most common remains in Krasiejów. It probably lived at the bottom of shallow-water reservoirs, as ambush predator hunting for fish and other small vertebrates. For air it had to resurface regularly, but it may not have been able to enter land. The bones on the bonebed belonged to it. Here you can see a close up of a mandible ramus from two perspectives, two ribs, a vertebra and interclavicle. Ciclotosaur, another temnospondyl amphibian, hunted on both water and land. It’s not easy to differentiate its bones from those of Metoposaurus on the field. Paleorhinus was a phytosaur, a 3,5 m (11,5 ft) long semi-acquatic predator superficially resembling a gavial. I have found a couple of teeth that belonged to it. Stagonolepis was a herbivorous, 3,5m long archosaur with a heavily armoured body. Its skull was small and equipped with conical teeth and a horny beak on the mandible and a fleshy snout on the upper jaw. It may have used them to dig food out of the ground. Osteoderms and teeth (not pictured) were rather common. We also found a femur of Stagonolepis: And a bone of the hind limb, that in order to be extracted and protected was covered with a field jacket of gypsum: Finally, a rauisuchian and dinosaur species make up the assemblage, but we didn’t find any of their bones since they are extremely rare. If you'd like to know more about Krasiejów, I suggest you to read these two papers: - Gruntmejer, K., Konietzko-Meier, D., & Bodzioch, A. (2015). The Triassic world of Krasiejów. FIELD GUIDE, 17. - Dzik, J. and Sulej, T. 2007. A review of the early Late Triassic Krasiejów biota from Silesia, Poland. Palaeontologia Polonica 64, 3–27. Well, that’s it! This excavation was an incredible experience for me, I met some great people and found amazing fossils! I hope you enjoyed and leave a comment if you have any question for me!! Fabio
  8. Whiteia woodwardi

    From the album Fossildude's Purchased/Gift Fossils

    Whiteia woodwardi Lower Triassic, Madagascar Coelacanth. This is a recent bargain I was able to scoop up. Even though it is not complete, it still has great details. It will set off my New Jersey Coelacanths nicely.

    © 2020 T. Jones

  9. Hello TFF Members, I'm looking for a specimen of the Triassic plant - Dinophyton spinosus (not exactly the one from the picture of course, I just attached it to make the post more attractive) and I was wondering if there is anyone here willing to exchange it for some other plant material or other fossils. Regards, Kasia
  10. From the album fish

    Parasemionotus labordei Priem, 1924 Lower Triassic Dienerian Ambilobe Madagascar
  11. From the album fish

    Pteronisculus cicatrosus WHITE, 1933 Triassic Sakamena Formation Ambilobe Antsiranana Province Diana Region Madagascar
  12. Hi, Does anyone have a copy of the paper that I could look at: Skawiński, T.; Ziegler, M.; Czepiński, Ł.; Szermański, M.; Tałanda, M.; Surmik, D. & Niedźwiedzki, G. (2017). A re-evaluation of the historical 'dinosaur' remains from the Middle-Upper Triassic of Poland. Historical Biology. 27 (4): 442–472. doi:10.1080/08912963.2016.1188385. The paper by Skawinski et al. is quite remarkable for rejecting the argument by Rauhut and Hungerbuhler (2000) that Velocipes guerichi is too indeterminate to be placed beyond Vertebrata, and while it agrees with Wild (1973) in classifying Thecodontosaurus primus as non-dinosaurian, it disagrees with Wild's synonymy of primus with Protanystropheus antiquus.
  13. 10 foot long Triassic relative of herrerasaurus named gnathovorex discovered in Brazil https://www.nationalgeographic.com/science/2019/12/one-of-worlds-oldest-carnivorous-dinosaurs-found-brazil/
  14. ID on fossil tracks

    I'm rather embarrassed but i need some ID help on something I purchased a few years ago. My chagrin is because I usually am very good at labeling purchases or at least taking a pic of a label if the seller does not provide one. I have this piece of shale that has some fossil claw or fin marks on it that I recall are swimming traces. The shale comes from the Triassic or Jurassic of the Newark Supergroup in Pennsylvania. Any help is appreciated!
  15. Bull Canyon Formation

    Here are some of my Bull Canyon Formation fossils from New Mexico.
  16. From the album fish

    Bobasatrania mahavavica Triassic Ambilobe Madagascar
  17. Hi. They were found in Muschelkalk facies of Ladinian. Bony remains of nothosaurs and placodontos appear in the area. In a book they appear classified as placodontos teeth, but I would like to specify more. Thank you.
  18. New Triassic Dino from Brazil

    A very well preserved herrerasaurid dinosaur, Gnathovorax cabreirai is described in the attached paper. For us collectors it gives us clues around Carnian age teeth. Unfortunately most of the teeth available to collectors are Norian or earlier in age. https://peerj.com/articles/7963/ Unfortunately the paper does not do a great job describing the teeth, here is what we have: "All tooth crowns are blade like, caudally curved and labiolingually compressed. The premaxillay and dentary teeth lack serrations in their mesial margins. However, in the distal margin there are small serrations that form a right angle with the main axis of the tooth. In the maxillary teeth the serration occur in both margins."
  19. Staurikosaurus

    Staurikosaurus tooth. Measuring 3/8 inch. San Miguel, New Mexico. Triassic .
  20. Keichousaurus hui

    Here is an interesting vertebrate with a very long neck. It meaaures 6.5 inches 16.3 cm around curve. The Keichousaurus Hui from Guanglin, Guizhou Province, China. The formation is the Huixia beds and is preserved on a one inch thick limestone plate with no cracks.
  21. 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 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
  22. L.S., Thought it would be fun to share this "chance encounter" I had at a mineral show. The photograph below shows a slab of petrified wood from the Triassic of the Isalo II Fm. of Madagascar. When material from this locality is offered for sale (which happens often and in large quantities), it is usually labelled as "Araucarioxylon" or simply as "petrified wood" (where the latter may actually be better). While most of the wood indeed has an "Araucaria-like" anatomy (see Rössler et al. 2014 for a recent discussion on the nomenclature), I recently was lucky enough to "find" something else. While the left-most photograph may not directly show it, the anatomy of this particular slab is quite different from the common Araucaria-like specimens. I tried to clarify the anatomy by contouring the main structures seen, which hopefully makes visible how this wood consists of multiple rings of perimedular bundles and wedge-shaped structures, showing both centripetal and centrifugal xylem (inward and outward growing regions, per as provisionally indicated by the blue and red arrows). This curious growth form (by modern wood standards, at least) is characteristic for the stems of some groups of Mesozoic seed ferns, such as those from the Umkomasiales order. The best-known genus with this type of anatomy is probably Rhexoxylon (see Archangelsky and Brett 1961), but there are more similar genera, making it difficult to arrive at a more specific identification.
  23. Barely a month had gone by since my last trip to New Mexico and Colorado, but I already had plans for this trip in the works. Primary focus this time, which was a solo trip, was fossil collecting, visiting well known sites that have been on my radar for quite some time. I flew out to Salt Lake City and drove directly to Kemmerer, WY. My first stop there was Fossil Butte National Monument: Here is a view of the visitors center (free admission) and the surrounding barren, but awesome landscape that surrounds it:
  24. Fossil Coral?

    This is said to be a Triassic fossil coral from Guizhou, China. Any idea if it is a fossil coral and what species it probably is? Thanks.
  25. Hi all! I've been active in the field for a bit but I've been MIA for a while, dealing with personal life. BUT I have come back online. Have some adventures I have yet to post. So if you're curious about the geology of that part of the world from the eyes of this Canadian hobbit, swing by my blog. Don't be shy and subscribe if you want to keep updated. I'll try to add some of the blog info in this forum too so that I can reach as many folks as possible so they can see the amazing stuff in my backyard. Blog URL: https://redleafz.blogspot.com Thanks!! - Keenan p.s. Little preview:
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