Diagnoza
Beak on the dentaries; small number of teeth (11-12 in both dentary and maxilla); 25 presacral vertebrae with 9-11 cervicals, and last two dorsals fused with the two sacrals that have deep sacral ribs; elongate, gracile front limbs, and digit I of pes reduced to vestigial metatarsal that probably lacked phalanges.
Porównanie
Autekologia
Omnivorous or herbivorous. Facultatively bipedal; delicate front limbs probably used to support the body at stance.
Występowanie geograficzne
Poland, probably Morocco and Brazil, possibly Tanzania.
Zasięg czasowy
Late Carnian (possibly also Early Norian).
Materiały muzealne
Four more or less incomplete articulated skeletons. Isolated bones representing at least eight individuals (possibly more than twenty).
Literatura
Dzik, J. 2001. A new Paleorhinus fauna in the early Late Triassic of Poland. Journal of Vertebrate Paleontology 21, 625-627.
Dzik, J. 2003. A beaked herbivorous archosaur with dinosaur affinities from the early Late Triassic of Poland. Journal of Vertebrate Paleontology 23, 556-574.
Dzik, J. & Sulej, T. 2004. Pierwszy polski dinozaur. 80 pp, Śląskie Wydawnictwo ADAN, Opole.
Dzik, J. & Sulej, T. 2007. A review of the early Late Triassic Krasiejów biota from Silesia, Poland. Palaeontologia Polonica 64, 1-27.
Ferigolo, J. & Langer, M.C. 2006. A Late Triassic dinosauriform from south Brazil and the origin of the ornitischian predentary bone. Historical Biology 19, 1–11.
Kammerer, C.F. Nesbitt, S.J., & Shubin, N.H. 2012. The first basal dinosauriform (Silesauridae) from the Late Triassic of Morocco. Acta Palaeontologica Polonica, 57, 277-284.
Nesbitt, S.J., Sidor, C.A., Irmis, R.B., Angielczyk, K.D., Smith, R.M.H., & Tsuji, L.M.A. 2010. Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira". Nature 464, 95–98.
Piechowski, R. & Dzik, J. 2010. The axial skeleton of Silesaurus opolensis. Journal of Vertebrate Paleontology 30, 1127-1141.