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Riojasaurus incertus
Taxonomy
Riojasaurus incertus was named by Bonaparte (1969). Its type specimen is PVL 3808, a partial skeleton, and it is a 3D body fossil. Its type locality is ruta 26, Los Colorados, which is in a Norian fluvial-lacustrine sandstone in the Los Colorados Formation of Argentina.
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Riojasaurus incertus Bonaparte p. 290 |
| 1969 | Strenusaurus procerus Bonaparte p. 291 fig. 6 |
| 1971 | Riojasaurus incertus Bonaparte pp. 131-132 |
| 1973 | Riojasaurus incertus Benedetto |
| 1973 | Riojasaurus incertus Bonaparte p. 115 |
| 1978 | Riojasaurus incertus Bonaparte p. 317 |
| 1978 | Riojasaurus incertus Bossi and Bonaparte p. 45 |
| 1979 | Riojasaurus incertus Bonaparte p. 222 |
| 1979 | Riojasaurus incertus Jain et al. p. 206 |
| 1984 | Riojasaurus incertus Bonaparte p. 130 |
| 1985 | Riojasaurus incertus Galton p. 672 |
| 1995 | Riojasaurus incertus Bonaparte p. 79 |
| 1995 | Riojasaurus incertus Bonaparte and Pumares p. 342 |
| 1997 | Riojasaurus incertus Novas p. 681 |
| 2003 | Riojasaurus incertus Yates p. 322 |
| 2004 | Riojasaurus incertus Galton and Upchurch p. 235 |
| 2005 | Riojasaurus incertus Galton et al. p. 4 |
| 2006 | Riojasaurus incertus Langer and Benton p. 342 fig. 13 |
| 2007 | Riojasaurus incertus Barrett et al. p. 321 |
| 2007 | Riojasaurus incertus Galton p. 518 |
| 2007 | Riojasaurus incertus Upchurch et al. p. 76 |
| 2007 | Riojasaurus incertus Yates p. 104 |
| 2009 | Riojasaurus incertus Bittencourt and Kellner p. 32 |
| 2010 | Riojasaurus incertus García et al. p. 422 |
| 2010 | Riojasaurus incertus Langer et al. p. 70 |
| 2011 | Riojasaurus incertus Apaldetti et al. p. 1 |
| 2012 | Riojasaurus incertus Ezcurra and Apaldetti p. 162 |
| 2015 | Riojasaurus incertus Martínez et al. p. 380 |
| 2016 | Riojasaurus incertus Peyre de Fabrègues and Allain p. 19 fig. 8 |
| 2020 | Riojasaurus incertus Moro et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Riojasaurus incertus Bonaparte 1969
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Invalid names: Strenusaurus procerus Bonaparte 1969 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. F. Bonaparte and J. A. Pumares 1995 | Melanorosaurid with the cranium provided with an wide preorbital opening, larger than in other prosauropods and with a vertically oriented lacrimal bar. Maxilla long and straight with 24 conical, subcylindrical teeth; mandibular articulation in the line of the alveolar plane of the maxilla, with osseous crests in the axial plane and anterior of the premaxillae and dentaries. Cervical vertebrae in general more robust than in Coloradisaurus or Plateosaurus, without ventral keel and with neural spines shorter axially in cervicals 7 to 10. Tall dorsal vertebrae, with well developed hyposphene-hypantrum and neural spine laminae low and axially extensive; three sacral vertebrae of which the two anterior are intimately fused. Pectoral girdle comparable to that of Plateosaurus-Lufengosaurus. Pelvic girdle comparable to these two genera but with shorter preacetabular processes and taller acetabulum. Humerus proportionally large and robust, with strong deltopectoral crest. Femur and tibia comparable to those of Melanorosaurus, but less robust. Astragalus and calcaneum of the type present in Plateosaurus and Massospondylus; characters of the hand and foot similar to Plateosaurus-Lufengosaurus. Disparity between fore and hindlimb less than in those genera. The humerus and radius represent 67% the length of the femur and tibia; the humerus is 80% the length of the femur; the tibia and astragalus represent 90% the length of the femur. (Translated by J. A. Wilson.) |
Measurements
No measurements are available
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| Source: g = genus, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Peczkis 1995 | |||||