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Found 388 results

  1. Malagasy Fish Fossils

    All I know is that they may be from Madagascar - any help identifying the type of fish and age would be great. Triassic perhaps? I'm afraid I have no more information. Thank you!
  2. Dinosaurs ended - and originated - with a bang ? In the new paper, published today in Nature Communications, evidence is provided to match the two events – the mass extinction, called the Carnian Pluvial Episode, and the initial diversification of dinosaurs Press release http://www.bristol.ac.uk/news/2018/april/dinosaurs-ended-and-originated-with-a-bang-.html Paper https://www.nature.com/articles/s41467-018-03996-1
  3. I don't know much about plants. What could this be? Part of a cycad? An infructescence? The fossil comes from the Upper Triassic / Lower Jurassic of Unternschreez near Bayreuth, Germany. Can someone help me with that? Thank you Thomas
  4. Icarealcyon malagasium Beltan, 1984

    From the album Vertebrates

    Icarealcyon malagasium Beltan, 1984 Early Triassic Dienerian Sakamena Formation Ambilobe Madagascar
  5. From the album Vertebrates

    Piveteauia madagascariensis Lehman 1952 Early Triassic Dienerian Sakamena Formation Ambilobe Madagascar J.-P. Lehman. 1952. Etude complémentaire des poissons de l'Eotrias de Madagascar. Kungliga Svenska Vetenskapsakademiens Handlingar 2:1-201
  6. Sinosaurichthys minuta WU et al, 2011

    Lit.: F. Wu, Y. Sun, G. Xu, W. Hao, D. Jiang and Z. Sun. 2011. New Saurichthyid Actinopterygian Fishes from the Anisian (Middle Triassic) of Southwestern China. Acta Palaeontologica Polonica 56(3):581-614
  7. Icarealcyon malagasium Beltan, 1984

    From the album Vertebrates

    Icarealcyon malagasium Beltan, 1984 Early Triassic Dienerian Sakamena Formation Ambilobe Madagascar Due to its enormous pectoral fins, Icarealcyon malagasium was described by Beltan as a "poisson volant" - a "flying fish" - in the family Semonotidae (not related to what is now known as "flying fish" - these are Exocoetidae in the order Beloniformes). You would expect flying fish to be fast swimmers - the rather thickset appearance of Icarealcyon more likely hints to slow swimmers with relatively high maneuverability (comparable to Albertonia from British Columbia).
  8. Rhaetian Bone ID

    Hi Help needed please, Does anyone recognise what this bone is? It's from the late Triassic, rhaetian of the UK. I don't think it's broken and I suspect it's a skull bone but that's the extent of my guesses. It's about 3 inches long and pretty thin. The outcrop is a bone bed which is mainly marine ie ichthyosaurs, plesiosaurs and fish but it does contain the remains of land animals. Bones are isolated and it's extremely rare to find anything associated. thanks Nick
  9. Started my Season

    Yesterday I started my fossil season 2018. It was the first real warm spring weekend this year. What a good feeling to get out again on such a beautyful day. Fortune was along with me and so I found several Triassic ammonoids. The small ones in the block are of upper Carnian(Tuvalian) age. The black Arcestes are of Norian age. Much snow is still on the higher mountains so it will last longer to start collecting at higher locations this year. regards Andreas
  10. Pachystropheus rhaeticus

    Hi Here's a small femur from the Triassic reptile Pachstropheus rhaeticus. The femur is about 2 inches long and sits amongst some Triassic debris including fish teeth. Nick
  11. Nothosaurus youngi LI & RIEPPEL, 2004

    From the album Vertebrates

    Nothosaurus youngi LI & RIEPPEL, 2004 Middle Triassic Fuyan Yunnan China
  12. Triassic Therapod Bone

    I found this piece of bone about a month ago and didn't really know what I was dealing with until I started prepping it out. I know that it is theropod based on the hollow structure, this should be at least somewhat visible in the photo of the broken edge. It came from the Redonda Formation in Eastern New Mexico where theropod remains have been found, but nothing identifiable to species. If anyone here can identify the species that would be fantastic, but I really just want to know what bone it is. My guess is the end of the pubis or ilium, but I was hoping for some other opinions.
  13. Triassic Period Emergence of Dinosaurs

    Decade of fossil collecting in Africa gives new perspective on Triassic period, emergence of dinosaurs Michelle Ma, University Of Washington News, http://www.washington.edu/news/2018/03/28/decade-of-fossil-collecting-in-africa-gives-new-perspective-on-triassic-period-emergence-of-dinosaurs/ https://www.laboratoryequipment.com/news/2018/03/decade-fossil-collecting-africa-gives-new-perspective-triassic-period Memoir 17: Vertebrate and Climatic Evolution in the Triassic Rift Basins of Tanzania and Zambia, Journal of Vertebrate Paleontology https://www.tandfonline.com/toc/ujvp20/current Yours, Paul H.
  14. The Mesozoic is an area that is sorely lacking in my collection. I don't know why, but I just never got around to collecting in it. I never fell in love with dinosaurs or mososaurs like a lot of other people. That was until fairly recently, when I finally took it upon myself to diversify my collection and get to know better my area's (and in some ways own backyard!) geology and paleontology. I set out to discover more about Maryland's Mesozoic Park. I guess it would be best to start off from the beginning. I started the journey not knowing what I'd find, but knowing what it was I hoped to find. I wanted a piece of the hallmark of the Mesozoic, the age of reptiles - my very own Old Line State dinosaur! There was only one problem - I didn't know where to find one. I knew generally what formations to look in, but not where, nor even what to look for. So I took up the ole' Google machine and my own literature at home and started uncovering more about where to start looking. That's what lead me to the first site. A TREK INTO THE TRIASSIC It would be disingenuous to say that I did this all by myself, and I would like to thank @WhodamanHD for helping me out tremendously. Without him I likely never would have gotten this together. For those who don't know, I'll take the liberty to describe the geology of the Free State. In Maryland, the only Triassic aged rocks exposed are those of the Newark Group, here divided by the Maryland Geological Survey into two formations - the New Oxford and the Gettysburg Shale. Both units are exposed in the Culpeper Basin (centered around the town of Poolesville, Montgomery County, Maryland) and the Gettysburg Basin (centered around, in Maryland, the town of Emmitsburg, Frederick County, Maryland). After several months of searching I was never able to find a good exposure near the famous former quarries around the Seneca region in Montgomery County, which is what lead me to the area near Frederick. Here the Triassic rocks are more readily exposed, with reports of numerous fossil discoveries of dinosaur footprints, plants, fish, and others in the area near Mt. St. Mary's University and Rocky Ridge. The Gettysburg Shale in this region is the most fossiliferous, and that is the one I ended up collecting in. Thanks again to @WhodamanHD for giving me info about the site! I spent a good hour or so at the Gettysburg Shale site, my mind full of images of that amazing Grallator sp. print I'd know I'd find. Unfortunately, as the shadows started growing and the day grew colder, I was forced to give up my quest without any dinosaur specimens from this unit. Still, it was nice to finally be able to collect in it and get to experience these amazing rocks up close and personal. The vast majority of the finds from this site were simple trace fossils of I assume to be annelid worms, these being most common in the glossy looking shale.
  15. https://blogs.scientificamerican.com/laelaps/paleo-profile-the-fish-from-china/
  16. 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
  17. Coelophysis bauri Tooth

    Recently acquired a Triassic Theropod Dinosaur Tooth from New Mexico, USA Coelophysis bauri tooth Location: Bull Canyon Formation, Norian, Upper Triassic, San Miguel County, New Mexico, USA 210 Million Years Old Obtained from Palaeontologist Byron Blessed Below are some sample photos, I am looking around for a small device in order to try magnify the serrations on the tooth as there are so many and it is very hard to count the number per mm. I have read the books and journals on Coelophysis bauri that were linked on this forum previously and they are so interesting! Will try to post some close-ups of the serrations, the other side of the tooth and the bottom of the tooth soon. Wiki Link: https://en.wikipedia.org/wiki/Coelophysis_bauri Journal is called 'Acritical re-evaluation of the Late Triassic dinosaur taxa of North America'
  18. Listracanthus pectenatus.jpg

    From the album Unusual Shark Teeth

  19. Aust cliffs

    Ok so some weeks ago I visited a friend in Bristol one of the days he was in work I ventured up north via public transport (which is always good fun especially when the buses run only every hour and stop at 6) so was limited on time a found a few rocks containing some surface but fragile fish scales, having never been there before I really should have thought on to bring some field tools but was a more spare of the moment type of thing, anyway so back home with the blocks and have just started processing them (and by them I mean 1 so far very nervously) by using a bolster and chisel and splitting along the sediment layers, first I was wondering if anyone has any tips on extracting fossils from this type of matrix yes it is limestone however I remember reading somewhere that using an acid such as vinegar can also damage the specimens. However what I have been ding is using a manual tool to very little effect and the dremel, the problem with this is the manual tool just isn't really helping with matrix removal and the dremel isn't chipping the matrix as effectively as I would hope and instead more crushes than chips (yes this is a dremel engraving tool however this vibrates rather than using a pneumatic action) the other thing I have been doing is using a syringe and very weak solution of b-72 protecting any specimens and using small amounts of vinegar on the surrounding matrix however again the amount that seems to be removed by the vinegar is minimal its probably soaking in to the matrix to be honest but I don't want to fully emerge the blocks and damage precious fossils, I understand this has almost become and essay of writing and was wondering if I should post in the preparations forum however I do have a few pieces I was looking for some id help with again first real exposure to fossils that are non dinosaur in origin, and first time ever dealing with this type of matrix. Any help is always appreciated Matt
  20. Dinosaur Footprint Cast?

    Hello, I found this last year during a fossil hunting trip in the Bendricks, South-Wales. I know their are several track ways and some 200+ footprints embedded within the rock around the local areas, however I have not seen a footprint cast from this locality either (that I know of). I have tried finding a contact for the geology department at the national museum based in Cardiff, though it has been unsucessful. Any light you can shed on this would be much appreciated! It may be just a conveniently shaped rock, however it is always worth asking. Apologies for the picture, I've had to rely on someone else for the picture - it is slightly larger than than palm size. Local rocks are Triassic - approx 220 million years
  21. Partial Anarosaurus skeleton

    From the album Dinosaurs and Reptiles

    Partial skeleton of a Middle Triassic marine reptile Anarosaurus (relative of Keichousaurus) from Muschelkalk, Germany. B, C, F, G, H - close-ups of various limb bones and vertebrae D - 2 Anarosaurus teeth E - fish scale I - Nothosaurus mirabilis (?) tooth The last two finds make me think that it is actually a Nothosaurus coprolite with digested Anarosaurus remains and various fish scales.
  22. From the album Vertebrates

    Saurichthys madagascariensis Piveteau, 1945 Early Trassic Dienerian Ambilobe Madagascar Length 40cm / 16"
  23. Ammonite Plaster

    From the album Invertebrates

    Ammonites Late Triassic Carnian Xiaowa Formation Yunnan PRC
  24. Traumatocrinus caudex Dittmar, 1866

    From the album Invertebrates

    Traumatocrinus caudex Dittmar, 1866 Late Triassic Carnian Xiaowa Formation Guanling Guizhou PRC
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