Lewisuchus

Not to be confused with Laevisuchus.

Lewisuchus
Temporal range: Carnian
~236–234 Ma
↓
Life reconstruction of Lewisuchus admixtus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: †Ornithischia (?)
Family: †Silesauridae
Genus: †Lewisuchus
Romer, 1972
Species:
†L. admixtus
Binomial name
†Lewisuchus admixtus
Romer, 1972
Synonyms
  • Pseudolagosuchus major Arcucci, 1987

Lewisuchus is a genus of archosaur that lived during the Late Triassic (early Carnian).[1] As a silesaurid dinosauriform, it was a member of the group of reptiles most commonly considered to be the closest relatives of dinosaurs (possibly true dinosaurs themselves).[2][3][4][5][6] Lewisuchus was about 1 metre (3.3 ft) long. Fossils have been found in the Chañares Formation of Argentina.[7] It exhibited osteoderms along its back.[8]

  1. ^ Ezcurra, Martín D.; Fiorelli, Lucas E.; Martinelli, Agustín G.; Rocher, Sebastián; von Baczko, M. Belén; Ezpeleta, Miguel; Taborda, Jeremías R. A.; Hechenleitner, E. Martín; Trotteyn, M. Jimena; Desojo, Julia B. (October 2017). "Deep faunistic turnovers preceded the rise of dinosaurs in southwestern Pangaea". Nature Ecology & Evolution. 1 (10): 1477–1483. Bibcode:2017NatEE...1.1477E. doi:10.1038/s41559-017-0305-5. hdl:11336/41466. ISSN 2397-334X. PMID 29185518. S2CID 256707805.
  2. ^ Müller, Rodrigo Temp; Garcia, Maurício Silva (August 2020). "A paraphyletic 'Silesauridae' as an alternative hypothesis for the initial radiation of ornithischian dinosaurs". Biology Letters. 16 (8): 20200417. doi:10.1098/rsbl.2020.0417. ISSN 1744-9561. PMC 7480155. PMID 32842895.
  3. ^ Müller, Rodrigo T. (April 2021). "A new theropod dinosaur from a peculiar Late Triassic assemblage of southern Brazil". Journal of South American Earth Sciences. 107: 103026. Bibcode:2021JSAES.10703026M. doi:10.1016/j.jsames.2020.103026. S2CID 229432076.
  4. ^ Garcia, Maurício S.; Müller, Rodrigo T.; Pretto, Flávio A.; Da-Rosa, Átila A. S.; Dias-Da-Silva, Sérgio (2021-01-02). "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. Bibcode:2021JSPal..19....1G. doi:10.1080/14772019.2021.1873433. ISSN 1477-2019. S2CID 232313141.
  5. ^ Pacheco, Cristian; Müller, Rodrigo T.; Langer, Max; Pretto, Flávio A.; Kerber, Leonardo; Dias da Silva, Sérgio (2019-11-08). "Gnathovorax cabreirai : a new early dinosaur and the origin and initial radiation of predatory dinosaurs". PeerJ. 7: e7963. doi:10.7717/peerj.7963. ISSN 2167-8359. PMC 6844243. PMID 31720108.
  6. ^ Cabreira, Sergio Furtado; Kellner, Alexander Wilhelm Armin; Dias-da-Silva, Sérgio; Silva, Lúcio Roberto da; Bronzati, Mario; Marsola, Júlio Cesar de Almeida; Müller, Rodrigo Temp; Bittencourt, Jonathas de Souza; Batista, Brunna Jul’Armando; Raugust, Tiago; Carrilho, Rodrigo (2016-11-21). "A Unique Late Triassic Dinosauromorph Assemblage Reveals Dinosaur Ancestral Anatomy and Diet". Current Biology. 26 (22): 3090–3095. Bibcode:2016CBio...26.3090C. doi:10.1016/j.cub.2016.09.040. ISSN 0960-9822. PMID 27839975.
  7. ^ Romer, A. S. (11 August 1972). "The Chañares (Argentina) Triassic reptile fauna; XIV, Lewisuchus admixtus, gen. et sp. nov., a further thecodont from the Chañares beds". Breviora. 390: 1–13.
  8. ^ Bittencourt, Jonathas; Arcucci, Andrea; Marsicano, Claudia; Langer, Max (15 December 2014). "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. doi:10.1080/14772019.2013.878758. hdl:11336/18502. S2CID 56155733.