Guaibasaurus

Guaibasaurus
Temporal range: Late Triassic, 225.42 Ma
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Skeletal reconstruction of Guaibasaurus candelariensis as an advanced, Unaysaurus-grade sauropodomorph. Known elements are in white.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: †Sauropodomorpha
Family: †Guaibasauridae
Genus: †Guaibasaurus
Bonaparte et al., 1999
Species:
†G. candelariensis
Binomial name
†Guaibasaurus candelariensis
Bonaparte et al., 1999

Guaibasaurus is an extinct genus of basal saurischian dinosaur known from the Late Triassic Caturrita Formation of Rio Grande do Sul, southern Brazil.[1][2][3][4] Most analyses recover it as a sauropodomorph,[1][5][6][7] although there are some suggestions that it was a theropod instead.[8] In 2016 Gregory S. Paul estimated it at 2 meters (6.6 ft) and 10 kg (22 lbs), whereas in 2020 Molina-Pérez and Larramendi listed it at 3 meters (10 ft) and 35 kg (77 lbs).[9][10]

  1. ^ a b Cite error: The named reference Guaibasaurus was invoked but never defined (see the help page).
  2. ^ Bonaparte, J. F.; Brea, G.; Schultz, C. L.; Martinelli, A. G. (2007-01-01). "A new specimen of Guaibasaurus candelariensis (basal Saurischia) from the Late Triassic Caturrita Formation of southern Brazil". Historical Biology. 19 (1): 73–82. doi:10.1080/08912960600866862. ISSN 0891-2963. S2CID 128421960.
  3. ^ Max C. Langer; Jonathas S. Bittencourt; Cesar L. Schultz (2011). "A reassessment of the basal dinosaur Guaibasaurus candelariensis, from the Late Triassic Caturrita Formation of south Brazil". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 101 (3–4): 301–332. doi:10.1017/S175569101102007X. S2CID 129055255.
  4. ^ Cite error: The named reference AM12 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Ezcurra2010 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Indiansaupo was invoked but never defined (see the help page).
  7. ^ 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.
  8. ^ Langer MC, McPhee BW, Marsola JCdA, Roberto-da-Silva L, Cabreira SF (2019) "Anatomy of the dinosaur Pampadromaeus barberenai (Saurischia—Sauropodomorpha) from the Late Triassic Santa Maria Formation of southern Brazil". PLOS One 14(2): e0212543. https://doi.org/10.1371/journal.pone.0212543
  9. ^ Paul, Gregory S. (2016). The Princeton Field Guide to Dinosaurs 2nd Edition. New Jersey: Princeton University Press. p. 183.
  10. ^ Molina-Pérez & Larramendi (2020). Dinosaur Facts and Figures: The Sauropods and Other Sauropodomorphs. New Jersey: Princeton University Press. p. 245. Bibcode:2020dffs.book.....M.