Typothorax was a heavily armored, wide-bodied reptile that lived before the reign of the dinosaurs. It is the largest known member of Aetosauria, a clade of predominantly herbivorous, terrestrial reptiles distantly related to crocodilians. Although Typothorax was the second aetosaur discovered, it has only been within the last decade that fossils complete enough for a full reconstruction have been discovered.

Thank you to the themattalorian for narrating this video.

Sources:

https://bioone.org/journals/journal-of-vertebrate-paleontology/volume-30/issue-3/02724631003763524/Articulated-Skeletons-of-the-Aetosaur-Typothorax-coccinarum-Cope-Archosauria/10.1080/02724631003763524.full

https://www.researchgate.net/profile/William-Parker-19/publication/258442730_Redescription_and_taxonomic_status_of_specimens_of_Episcoposaurus_and_Typothorax_the_earliest_known_aetosaurs_Archosauria_Suchia_from_the_Upper_Triassic_of_western_North_America_and_the_problem_of_pro/links/02e7e52844c2a57733000000/Redescription-and-taxonomic-status-of-specimens-of-Episcoposaurus-and-Typothorax-the-earliest-known-aetosaurs-Archosauria-Suchia-from-the-Upper-Triassic-of-western-North-America-and-the-problem-of-p.pdf

https://www.researchgate.net/publication/349927263_Cranial_Anatomy_and_Dentition_of_the_Aetosaur_Typothorax_Coccinarum_Archosauria_Pseudosuchia_from_the_Upper_Triassic_Revueltian-Mid_Norian_Chinle_Formation_of_Arizona

https://www.researchgate.net/publication/277176154_The_morphology_and_ontogeny_of_Typothorax_coccinarum_Archosauria_Stagonolepididae_from_the_Upper_Triassic_of_the_American_Southwest

https://www.researchgate.net/profile/Andrew-Heckert/publication/266213340_A_new_species_of_the_aetosaur_Typothorax_Archosauria_Stagonolepididae_from_the_Upper_Triassic_of_east-central_New_Mexico/links/5435989d0cf2bf1f1f2b34a9/A-new-species-of-the-aetosaur-Typothorax-Archosauria-Stagonolepididae-from-the-Upper-Triassic-of-east-central-New-Mexico.pdf

http://sedici.unlp.edu.ar/handle/10915/108331

https://anatomypubs.onlinelibrary.wiley.com/doi/abs/10.1002/ar.25343

https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/abs/late-triassic-norian-adamanianrevueltian-tetrapod-faunal-transition-in-the-chinle-formation-of-petrified-forest-national-park-arizona/51AC2104D0154477708442BFD00B2B14

00:00 – Introduction
01:02 – Discovery
03:58 – Size and Basic Shape
06:24 – Osteoderms
09:57 – Limbs
12:01 – Skull
14:33 – Growth and Lifecycle
17:00 – Conclusion
17:35 – Outro

Take the opportunity to connect and share this video with your friends and family if you find it useful.