Name: Lewisuchus ‭(‬Lewis’s crocodile‭)‬.
Phonetic: Lew-iss-su-kus.
Named By: A.‭ ‬S.‭ ‬Romer‭ ‬-‭ ‬1972.
Synonyms: Pseudolagosuchus major‭?
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauriformes.
Species: L.‭ ‬admixtus‭ (‬type‭)‬.
Diet: Carnivore.
Size: Roughly about‭ ‬1‭ ‬meter long.
Known locations: Argentina‭ ‬-‭ ‬Chañares Formation.
Time period: Ladinian of the Triassic.
Fossil representation: Partial remains.

       Though the name means‭ ‘‬Lewis’s crocodile‭’‬,‭ ‬Lewisuchus is actually a genus of silesaurid dinosauriforme.‭ ‬In simpler terms,‭ ‬Lewisuchus was closely related to the ancestors of the dinosaurs,‭ ‬though probably not an ancestor itself.‭ ‬Lewisuchus was a fairly small and lightly built predator that probably hunted for small animals such as lizards and primitive mammaliaformes.

Further reading
-‭ ‬The Chañares‭ (‬Argentina‭) ‬Triassic reptile fauna‭; ‬XIV,‭ ‬Lewisuchus admixtus,‭ ‬gen.‭ ‬et sp.‭ ‬nov.,‭ ‬a further thecodont from the Chañares beds.‭ ‬-‭ ‬Breviora‭ ‬390:1-13‭ ‬-‭ ‬A.‭ ‬S.‭ ‬Romer‭ ‬-‭ ‬1972.
-‭ ‬Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira.‭ ‬-‭ ‬Nature‭ ‬464‭(‬7285‭)‬:95-8.‭ ‬-‭ ‬Sterling J.‭ ‬Nesbitt,‭ ‬Christian A.‭ ‬Sidor,‭ ‬Randal B.‭ ‬Irmis,‭ ‬Kenneth D.‭ ‬Angielczyk,‭ ‬Roger M.‭ ‬H.‭ ‬Smith‭ & ‬Linda A.‭ ‬Tsuji‭ ‬-‭ ‬2010.
- Osteology of the Middle Triassic archosaur Lewisuchus admixtus Romer (Chañares Formation, Argentina), its inclusivity, and relationships amongst early dinosauromorphs. - Journal of Systematic Palaeontology. 13 (3): 189–219. - Jonathas Bittencourt, Andrea Arcucci, Claudia Marsicano & Max Langer - 2014.
- Bone microstructure of Lewisuchus admixtus Romer, 1972 (Archosauria, Dinosauriformes). - Historical Biology. 31 (2): 157–162. - Jordi Alexis Garcia Marsà, Federico L. Agnolín & Fernando Novas - 2017.
- New specimen sheds light on the anatomy and taxonomy of the early Late Triassic dinosauriforms from the Chañares Formation, NW Argentina. - The Anatomical Record. 303 (5): 1393–1438. - Martín D. Ezcurra, Sterling J. Nesbitt, Lucas E. Fiorelli & Julia B. Desojo - 2019.


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