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This tooth was label has a Araripesuchus tooth but does its belongs to one its from Neuquen, Argentina ?

Paper just released that describes the dorsal vertebrae in detail of the titanosaur Dreadnoughtus schrani from Argentina that was described in 2014. If you ever wanted to know what the different areas of a dorsal vertebra were called this gives you more than you ever need. It also gives you relative position in the vertebral column. You will be tested on the pronunciation and spelling of these words Check the scale bar it's 50 cm (appox 20 inches) Complete dorsal vertebrae are very rare especially this well preserved. This discovery gives paleontologist an opportunity to use these specimens to compare against other taxons. It also gives them a better understanding of their position in the sketal structure. https://www.app.pan.pl/article/item/app003912017.html Osteology of the dorsal vertebrae of the giant titanosaurian sauropod dinosaur Dreadnoughtus schrani from the Late Cretaceous of Argentina Kristyn K. Voegele, Matthew C. Lamanna, and Kenneth J. Lacovara Acta Palaeontologica Polonica 62 (4), 2017: 667-681 doi:https://doi.org/10.4202/app.00391.2017 app62-Voegele_etal_SOM.pdfapp003912017.pdf Supplemental Images app003912017.pdf Dreadnoughtus 2014 paper https://www.nature.com/articles/srep06196

Hello, we are having a difficult time getting to know a quarry we can go for fossil hunting in October. We are from Argentina and will be on vacation to the states. can soneone help us find some? Thank you

Periodically you see theropod material offered for sale from Patagonia and to a collector that's awesome. Typically its specimens obtained before the embargo laws went into affect from Argentina. My experience in looking at what has been offered is that it's often mis-identified as to locality, age and species. Sellers put commonly known dinosaurs identification tags to their specimen like Carnotaurus with complete disregard to the actual age and locality of where that dinosaur was described. That may simply be the information provided to them but they don't verify it and it's easy to do. The reality is that theropod diversity in Patagonia is huge, over vast collecting areas, several provinces, numerous formations and ages. Understanding theropods from this region is just beginning and little is understood, sound familiar Identification of isolated teeth unless there is something diagnostic about the tooth is virtually impossible. I have a difficult time accepting the notion that local diggers knew all the science around what they were collecting, maintained accurate records and provided detailed information to foreign buyers. It was all about the Peso. A recent publication sheds some light on discoveries and I've attached a couple of images to help with diagnosis of the locality and age of specimens you may see offered for sale. Material from this region is very cool but be careful, don't let emotion take over. Just make sure it's was legally acquired and be prepared to identify it as Theropod indet. and don't be fooled that the name offered is valid. Be happy you're just having the opportunity to acquire such a rare specimen. Evolution of the carnivorous dinosaurs during the Cretaceous: The evidence from Patagonia Fernando E. Novas, Federico L. Agnolín, Martín D. Ezcurra, Juan Porfiri, Juan I. Canale

An amazingly well-preserved Jurassic rhamporhyncoid pterosaur known as Allkauren koi has been discovered in South America. Here is the article from SciNews: Pterosaurs were highly successful flying reptiles that lived between 210 million and 65 million years ago. These creatures were Earth’s first winged vertebrates, with birds and bats making their appearances much later. They first appeared in the Late Triassic and went on to achieve high levels of morphologic and taxonomic diversity during the Mesozoic era, with more than 150 species recognized so far. Pterosaurs have traditionally been divided into two major groups: the primitive, primarily long-tailed rhamphorhynchoids (preferably currently recognized as non-pterodactyloids) and the derived short-tailed pterodactyloids. They had an extraordinary adaptation to flight, including pneumatic bones to lighten its weight, and an elongated digit supporting a wing membrane. Some were the largest flying animals of all time, with wingspans exceeding 30 feet. Pterosaurs are not rare in the fossil record, but their neuroanatomy is known from only a few three dimensionally preserved remains and, until now, there was no information on the intermediate forms. Named Allkauren koi, the newly-discovered winged reptile is represented by several skeletal elements including an almost perfect, three-dimensionally preserved braincase that shows a unique combination of characters shared with both pterodactyloids and breviquartossans (non-pterodactyloids). The fossilized material comes from a single locality within the Cañadón Asfalto Formation in northern central Chubut Province, Patagonia, Argentina. “Allkauren koi, from the middle lower Jurassic limit, shows an intermediate state in the brain evolution of pterosaurs and their adaptations to the aerial environment,” said Dr. Diego Pol, a paleontologist at the Museum of Paleontology Egidio Feruglio in Trelew, Chubut, Argentina. “As a result, this research makes an important contribution to the understanding of the evolution of all of pterosaurs.” Life restoration: Skeletal elements:

I went with a few friends to browse around a antique mall today, and i came across some cool pieces. I think i got a pretty good deal on some nice fossils. But i really do not buy fossils enough to know if a price is really good or not. I'd like to hear your opinion. The first one that caught my eye was a 7" Cambropallas pos/neg from Morocco. Now i know these are notorious for being faked, so i examined it as best as i could. It definitely is real, but has some repair. The negative side has the most repair. But i thought the $75 was worth a talk. So we talked and i got 10% knocked off. $68 sold!!! Next i spotted some nice Argentine pine cone fossils. I know they don't export them anymore, so the prices have rocketed to outrageous amounts. All of the pine cones were listed from $9-15. I picked out three nice pieces. (BUT i left about a dozen there. So if anyone has interest in get a few I'll go back and grab em'. I just ask you pay for the cost of item plus shipping. PM me.) Sure they're not complete, but they look good. Did i do good? more pics.......

Over the weekend I acquired some shark teeth that I would like to have ID'd. The teeth in the upper left are from Argentina which is about as much as I can tell you. The bottom right are from Sharktooth Hill in California.

Hello! I'm relatively new here, but I've been coming to this site for years to look at the great photos and read the discussions. I started this topic to share some of my own research that's going on right now about mass mortalities of marine invertebrates in Patagonia, Argentina. Over that past couple of years I've been working in Argentina, studying fossils (mostly decapods and mollusks) which were killed en masse by volcanic ash. We found some really interesting things in our first trip to the Valdes Peninsula, and documented that volcanic ash can have a killing effect on marine fauna even hundreds of kilometers away from the eruption! I'm also describing a new species of marine isopod that was found preserved in volcanic ash right now. This work is really exciting to me because there is a huge opportunity for new discovery. I hope to describe the numerous different effects volcanic ash has on marine ecosystems, and how they recover from catastrophic events. The ash also plays a really important role in fossil preservation processes, which I also hope to test and describe. I recently launched a "crowd funding" campaign on a website called experiment.com to help raise funds to go back to Argentina for a more comprehensive study of the mass kill sites we know about. If any of you are interested in learning more about the research, or donating to help support it, you can find a video, and other info at http://www.experiment.com/deathbyvolcanicash. I'm also interested in any comments or thoughts anyone has on this topic. I'm always looking for new field sites which may involve volcanic activity and marine fossils, and my research is also more broadly related to mass mortality events in the fossil record in general, so if anyone has any insight into any of this, please comment! Also, if anyone is in the Cleveland area, I'll be giving a talk to a local fossil club on Saturday, May 7th, so if anyone is interested, let me know!

Hello all! I found this a few days ago while hiking in the Ischigualasto provincial park in San Juan province in Argentina. I'm not even sure it's a fossil at all, but it was too heavy to be a bone, and it also felt (and sounded) like a rock. I took a few pictures of it and its surroundings, marked the spot in my GPS and left it where I found it (It's illegal to collect fossils in this area) so I hope these pictures will be enough. Thanks!

Hi. I got a little eggshell, but i'm wondering what dinosaur it is from. The only information i have is: 1. It was found in the city General Roca in Argentina. 2. It is about 80 million years old. 3. It is from a Titanosaur. Hope someone can find the dinosaur.

After 121 years, identification of 'grave robber' fossil solves a paleontological enigma, PhysOrg, Nov. 19, 2012 http://phys.org/news...ber-fossil.html Mystery Molelike Mammal Survived Dino Extinction Stephanie Pappas, LiveScience, Nov. 19, 2012 http://www.livescien...extinction.html Press Release - http://www.eurekaler...n-a1y111912.php Rougier, G. W., J. R. Wible, R. M. D. Beck and S. Apesteguia, 2012, The Miocene mammal Necrolestes demonstrates the survival of a Mesozoic nontherian lineage into the late Cenozoic of South America. Proceedings of the National Academy of Sciences of the United States of America in press. doi:10.1073/pnas.1212997109 http://www.pnas.org/...997109.abstract Best wishes, Paul H.