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  1. The Triassic period (252-201 Million Years ago), the era when the first dinosaurs evolved, isn't exactly known for large dinosaurs (except for the first large sauropods from the Latest Triassic). The largest terrestrial creatures at the time were a few dicynodonts such as Lisowicia and other archosaurs like the rauisuchidae (like Postasuchus). Only a few known large theropod dinosaurs from the Triassic are currently known including Gojirasaurus (Coelophysoid - New Mexico US, Western North America) (Late Triassic (210-201.3 Million Years ago)), growing up to 5.5 meters (18 feet) in length. But it may have competition. For one example, There is a Herrerasaurus specimen (PVSJ 53) that apparently grew up to 6 meters (20 feet) in length. There is also an unnamed Herrerasaurid (UFSM 11330) from the Santa Maria Formation (Late Triassic (233.23 Million Years ago)) from the southern most state of Brazil. Image credit: https://www.researchgate.net/publication/349926161_Taxonomic_and_phylogenetic_reassessment_of_a_large-bodied_dinosaur_from_the_earliest_dinosaur-bearing_beds_Carnian_Upper_Triassic_from_southern_Brazil Maurício S. Garcia, Rodrigo T. Müller, Flávio A. Pretto, Átila A. S. Da-Rosa & Sérgio Dias-Da-Silva (2021) Taxonomic and phylogenetic reassessment of a large-bodied dinosaur from the earliest dinosaur-bearing beds (Carnian, Upper Triassic) from southern Brazil, Journal of Systematic Palaeontology, 19:1, 1-37, DOI: 10.1080/14772019.2021.1873433 https://www.researchgate.net/publication/349926161_Taxonomic_and_phylogenetic_reassessment_of_a_large-bodied_dinosaur_from_the_earliest_dinosaur-bearing_beds_Carnian_Upper_Triassic_from_southern_Brazil Recently described only in 2021, the Herrerasaurid apperently reached lengths between 4.5-5 meters (14-16 feet) in length. I truly believe this species could grow up to 5.5 meters (18 feet). There is probably more other theropod dinosaur species from the Triassic, but I do think these two species could be good contenders for being the Largest Theropod Dinosaurs from the Triassic period. What do you guys think?
  2. JakubArmatys

    Triasic Archosaur Tooth

    Loc: https://www.geopark-thueringen.de/entdecken-erleben/nationale-geotope/standard-titel Age: Triassic, Keuper For wchich Archosaur, this tooth belongs? I know that it's hard to say, but maybe somebody can do this
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