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  1. The Triassic-Jurassic Extinction Event of 201 Million Years ago is less talked about at times than the Mass Extinction events at the end of the Permian and the end of the Cretaceous, but was still an incredibly significant extinction event in Earth’s geologic history. P. Olsen et al. Arctic ice and the ecological rise of the dinosaurs. Science Advances. Published online July 1, 2022. doi:10.1126/sciadv.abo6342. https://www.science.org/doi/10.1126/sciadv.abo6342 Caused by volcanic eruptions that would eventually break apart Pangea and form the Atlantic Ocean, about 23-43% of marine genera (including 96% of coral genera at the time) was wiped out alongside between 17-73% of plant genera at the time. On land, archosaur diversity was decimated. Phytosaurs, Aetosaurs, and many others primitive archosaur groups were wiped out. But one major group of archosaurs that survived were the dinosaurs (Dinosauria). Emerging first in the middle Triassic, dinosaur diversity was hit hard by the event. But the group was overall able to survive thanks to adaptations such as a mostly warm-blooded metabolism and (for theropod dinosaurs) feathers for warmth. Some of the first true mammals including Morganucodon also survived the event, but they would take more of a backseat until the end of the Mesozoic era. For the Dinosaurs, the survivors of the event would go on to diversify, increase in size, and dominate Earth’s terrestrial ecosystems for the next 135 Million Years as they become one of the most successful animal groups in Earth’s history. Here’s a list of all currently known Dinosaur genera and families that survived the Triassic-Jurassic Extinction Event. If I forget any examples, please let me know and I'll add the examples to the list promptly. Dinosauria Saurischa Theropoda (Theropod Dinosaurs) Coelophysidae Coelophysis (Late Triassic-Early Jurassic, 215-199.3 Million Years ago) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38520 https://paleobiodb.org/classic/basicCollectionSearch?collection_no=47198 https://elischolar.library.yale.edu/peabody_museum_natural_history_postilla/169/ https://www.mdpi.com/1424-2818/14/11/973 https://www.cell.com/current-biology/pdf/S0960-9822(16)31124-1.pdf Lophostropheus (Late Triassic-Early Jurassic, 205.6-196.5 Million Years ago) https://www.tandfonline.com/doi/abs/10.1671/0272-4634(2007)27[73%3ATCLAGN]2.0.CO%3B2 https://www.theropoddatabase.com/Coelophysoidea.htm https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4720452/ Liliensternus (Late Triassic-Early Jurassic, 288-201.3 Million Years ago) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=55542 https://archive.org/details/predatorydinosau00paul/page/266/mode/2up https://www.cell.com/current-biology/pdf/S0960-9822(16)31124-1.pdf ?Megapnosaurus (Late Triassic-Early Jurassic, 237.0-199.3 Million Years ago) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=101006 M. A. Raath. 1972. First record of dinosaur footprints from Rhodesia. Arnoldia. 5(37):1-5. https://paleobiodb.org/classic/displayCollResults?taxon_no=101006&max_interval=Triassic&country=Zimbabwe&is_real_user=1&basic=yes&type=view&match_subgenera=1 https://libres.uncg.edu/ir/asu/f/Heckert_A_2003_24_Coelophysids.pdf https://dinodata.de/bibliothek/pdf_p/2021/rsos.210915.pdf Dracoraptor (Late Triassic-Early Jurassic, 201.4-199.3 Million Years ago) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=335179 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4720452/ Dilophosauridae https://morphobank.org/index.php/Projects/ProjectOverview/project_id/4332 https://www.tandfonline.com/doi/full/10.1080/02724634.2021.1897604 (next sources for this part I recommend further analysis for their hypothesis of the genus Dilophosaurus itself (not just Dilophosauridae) emerging in the late Rhaetian stage of the Triassic in what is now Southern France) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=231458 https://paleobiodb.org/classic/basicCollectionSearch?collection_no=38886&is_real_user=1 https://paleobiodb.org/classic/basicCollectionSearch?collection_no=126607&is_real_user=1 https://paleobiodb.org/classic/basicCollectionSearch?collection_no=206455&is_real_user=1 https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=231458&is_real_user=1 https://libres.uncg.edu/ir/asu/f/Heckert_A_2005_29_Arizonas.pdf Eubrontes (Brazil species, Late Triassic-Early Jurassic, 228-201.3 Million Years ago) https://paleobiodb.org/classic/displayCollResults?taxon_no=66094&max_interval=Triassic&country=Brazil&is_real_user=1&basic=yes&type=view&match_subgenera=1 https://www.researchgate.net/publication/235218239_Footprints_of_large_theropod_dinosaurs_and_implications_on_the_age_of_Triassic_biotas_from_Southern_Brazil Sauropodomorpha (Sauropod dinosaurs and their ancient sauropodomorph relatives) Massospondylidae https://www.nature.com/articles/s41598-021-01120-w Massospondylus (Late Triassic-Early Jurassic, 200-183 Million Years ago) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38642&is_real_user=1 https://www.cambridge.org/core/journals/geological-magazine/article/abs/sedimentology-and-palaeontology-of-the-upper-karoo-group-in-the-midzambezi-basin-zimbabwe-new-localities-and-their-implications-for-interbasinal-correlation/BF94CA760FCD32F6708001EF18B5299E https://bioone.org/journals/journal-of-vertebrate-paleontology/volume-29/issue-4/039.029.0401/A-New-Basal-Sauropodomorph-Dinosaur-from-the-Upper-Elliot-Formation/10.1671/039.029.0401.short Melanorosauridae Melanorosaurus (Late Triassic-Early Jurassic, 216.5-201 Million Years ago) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38648 https://www.researchgate.net/publication/281466716_The_first_complete_skull_of_the_Triassic_dinosaur_Melanorosaurus_Haughton_Sauropodomorpha_Anchisauria https://wiredspace.wits.ac.za/server/api/core/bitstreams/5d876b0c-8599-4ee4-8b75-d4078290f8c2/content Lessemsauridae https://wiredspace.wits.ac.za/items/95d33ada-766c-4446-a71b-33fd37fadad4 https://www.nature.com/articles/s41598-021-01120-w Plateosauridae Plateosaurus (Late Triassic-Early Jurassic, 208.5-199.3 Million Years ago) https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=38644 https://paleobiodb.org/classic/basicCollectionSearch?collection_no=191140 https://www.cell.com/current-biology/pdf/S0960-9822(16)31124-1.pdf What do you guys think? Hope you all like it.
  2. I’m trying to get better at identification so I labeled the pieces with what I think they are but some I can’t figure out. I would love some guidance if anyone has any input! Thanks Fernandina Beach Amelia Island Florida USA
  3. Claudia Cruz

    Natural Pearl Fossil

    My first time posting here. Just found this unusual piece after a big storm and extremely high tide in Cape Canaveral, FL. Has several holes, two larger ones connect. Smaller pin size holes on bottom are not very deep. Also has a small curled up end, similar to a tail. I thought it was ivory, but it is such an odd shape. Maybe a natural pearl?
  4. Curious to know if the white marks are fossils of some sort!
  5. Sorry but I am not geologist or have any background on fossils. I am an iNaturalist user, and a friend sent me some photos taken in a NW Spain beach asking me if it was a fossil. So I searched iNaturalist and found a topic which mentioned this was a good place to ask for fossil identifications. So here are the photos he sent me. The place is now covered by sand this year so I guess he cannot take close ups right now (just in case you ask). The 1 euro reference coin diameter is 23.25 mm (according to wikipedia). There is a "snake shaped" mark in the rock, next to the coin in 1st image. But to its left I also see an odd "olympics flag" shape with 5 circles, in the 2nd image. There are also some photos of the context place where the rock (marked with a piece of wood) is found. Thanks a lot in advance for any help.
  6. Skull-yRose

    Found Skull encased in rock!

    I' m a local photographer in Flagler Beach, FL. I frequent a local beach almost daily. I have come across quite an interesting find. Currently due to stormy weather causing rough waves and some higher than normal tides the rocks have been sliding down into the ocean and breaking apart. Well a wonderful treasure was exposed in one of the rocks. A skull. There is also a tooth and what looks to be bone vertebrate. I am in the process of excavating currently but would love to know who this skull belongs to. Any help is appreciated!!
  7. DardS8Br

    Megalodon or Chubutensis?

    I bought this Megalodon tooth a while ago, but the shape of it has me wondering if it’s actually a chubutensis tooth Here are two images of the tooth. It’s 4.88 inches from root to tip. It was collected off the Atlantic coast of North Carolina.
  8. harfordmike

    Obx find

    I found this on the beach in north Carolina . It looks eggy to me I’m curious to know if there is anyone who knows what it might be
  9. Celticaceous

    Irish Beach find

    Hello, I am looking to see if anyone can give their opinion on what this fossil is created from, I come across many fossils in areas i go looking for them but have not come across anything looking like this. It is approx 230mm in width from left to right in this picture and 200mm in height from top to bottom. Cant give photos from the back etc as it is on top of a large boulder. Hope it is something that jumps out for someone. Eoin.
  10. Hello! I’m a new member from NC. I’m a fossil novice but look forward to learning! These fossils were found in shell piles at the high tide line at Ocean Isle Beach - a small island on the southern coastline of North Carolina. I think these are teeth but I can’t find any similar teeth online. Any help with identification is greatly appreciated!
  11. I have found a ton of these. Does anyone know what they might be?
  12. 14a1881

    Unknown Cetacean Fossil

    This is a fossil of unknown origin, it was allegedly found burried in sand near the shore of the Chesapeake Bay in Virginia; or possibly on the banks of the James River. The previous owner believed it to be an intervertebral disc of some kind of whale. It is clearly fossilized and has some areas encrusted with a sand like mineral. It also has a few spots where a shiny black mineral has been deposited. Can anyone provide an identification and possible an estimated age?
  13. BananaNemesis

    What is this?

    We found this a few years ago at a beach in PBC Florida... I think there had been a renourishment and they had brought sand up from off shore. We don’t know what it is.. do you?
  14. Can anyone ID this fossil? My son found it on a beach in Massachusetts and he's very curious about it. LINK It's about 2 inches across. Thanks!
  15. Greg31

    Find at North Myrtle Beach, SC

    My son found this today at North Myrtle Beach, SC. We are just wondering if anyone can help us identify what it is? Thanks!
  16. JTCatskills

    Atlantic (NJ) coast fossil i.d.

    Hi all. Thanks for any help in identifying this. My initial guess is fossilized stony coral of some type. Possibly favosite? Found on the northern end beach of Brigantine Island NJ, one of the southern barrier islands. Measures 14 cm on its longest "side" and weighs 10.1 oz. Color is light brown-gray with blue hues It encases a clam shell, looks like an Atlantic Surf Clam Macro-lens photos show structure that appears like honeycomb throughout Has a number of larger stoma-like holes/tubes. Thanks in advance for any thoughts. (Hopefully images are decent. Had to compress them heavily so quality might be iffy)
  17. Atlantic Canadian mega-volcanoes blamed in mass extinction End Triassic extinction wiped out half the world's species 200 Ma (million years ago) http://www.cbc.ca/news/canada/new-brunswick/story/2013/03/22/science-end-triassic-mass-extinction-volcanoes.html Here's another article related to this subject.. http://www.sciencedaily.com/releases/2013/03/130321141450.htm
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