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Patagosaurus fariasi
Taxonomy
Patagosaurus fariasi was named by Bonaparte (1979). Its type specimen is PVL 4170, a partial skeleton, and it is a 3D body fossil. Its type locality is Cerro Cóndor North, which is in a Toarcian wet floodplain tuff/sandstone in the Cañadón Asfalto Formation of Argentina. It is the type species of Patagosaurus.
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Patagosaurus fariasi Bonaparte p. 226 |
| 1980 | Patagosaurus fariasi Bonaparte p. 76 |
| 1981 | Patagosaurus fariasi Bonaparte p. 669 |
| 1984 | Patagosaurus fariasi Bonaparte p. 134 |
| 1986 | Patagosaurus fariasi Bonaparte p. 251 |
| 1986 | Patagosaurus fariasi Taquet p. 42 |
| 1990 | Patagosaurus fariasi McIntosh p. 378 |
| 1994 | Patagosaurus fariasi Filla and Redman p. 164 |
| 1995 | Patagosaurus fariasi Bonaparte p. 80 |
| 1995 | Patagosaurus fariasi Coria p. 211 |
| 1996 | Patagosaurus fariasi Loyal et al. p. 635 |
| 1997 | Patagosaurus fariasi Novas p. 681 |
| 1999 | Patagosaurus fariasi Bonaparte p. 138 |
| 1999 | Patagosaurus fariasi Salgado p. 210 |
| 2002 | Patagosaurus fariasi Wilson p. 271 |
| 2003 | Patagosaurus fariasi Yates p. 323 |
| 2004 | Patagosaurus fariasi Upchurch et al. p. 263 |
| 2005 | Patagosaurus fariasi Apesteguía p. 249 |
| 2005 | Patagosaurus fariasi Gallina and Apesteguía p. 158 |
| 2005 | Patagosaurus fariasi Salgado and Coria p. 433 |
| 2008 | Patagosaurus fariasi Allain and Aquesbi p. 400 |
| 2008 | Patagosaurus fariasi Escapa et al. p. 617 |
| 2009 | Patagosaurus fariasi Myers and Fiorillo p. 99 |
| 2014 | Patagosaurus fariasi Mocho et al. |
| 2015 | Patagosaurus fariasi Cerda et al. p. 14 |
| 2015 | Patagosaurus fariasi Manning et al. p. 5 |
| 2017 | Patagosaurus fariasi Souto and Fernandes p. 232 |
| 2020 | Patagosaurus fariasi Moro et al. |
| 2021 | Patagosaurus fariasi Bindellini and Dal Sasso p. 152 |
| 2021 | Patagosaurus fariasi Holwerda et al. p. 578 |
| 2021 | Patagosaurus fariasi Ren et al. p. 1875 |
| 2021 | Patagosaurus fariasi Rigby et al. p. 16 |
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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.
†Patagosaurus fariasi Bonaparte 1979
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. F. Bonaparte 1986 | Cetiosaurid of large size, with tall dorsal vertebrae; posterior dorsals with elevated neural arches and well-developed neural spines, formed from 4 divergent laminae and with a massive dorsal region; dorsoventrally-oriented neural spine cavities, more expanded than in Barapasaurus. Anterior and lateral regions of the neural arch similar to that of Cetiosaurus and Barapasaurus. Sacrum with 5 vertebrae, elevated neural spines, and a large dilation of the neural canal forming a neural cavity. Pelvis with pubis showing distal and proximolateral expansions, more developed than in Barapasaurus, and a less expanded pubic symphysis than in Amygdalodon. Ischium slightly transversely compressed, with a ventromedial ridge of sublaminar type, and with a clear distal expansion. Ratio of tibia-femur lengths from 1:1.5 in juveniles, reaching 1:1.7 in adults. Mandible with weak medial torsion. Spatulate teeth with occlusal traces. (Translated by M. Carrano.) | |
| F. M. Holwerda et al. 2021 | Patagosaurus fariasi is a non-neosauropodan eusauropod dinosaur that can be diagnosed on the basis of the following morphological features, and the following combination of characters (features with * are tentatively considered autapomorphies): 1) cervical and anterior dorsal vertebrae with marked pleurocoel, which is deep in cervicals but shallower in dorsals. In cervical vertebrae, the pleurocoel is deeper anteriorly with well defined margins, but becomes shallow posteriorly and has only well defined dorsal and ventral margins; 2) in several cervicals, a faint oblique accessory lamina is present, dividing the pleurocoel into an anterior deeper part and a posteriorly shallower part; 3) the cervicals have a relatively high neural spine, accompanied by high dorsal placement of postzygapophyses, which results in a high angle between the postzygodiapophyseal and posterior centrodiapophyseal laminae of about 55°; 4) Posterior dorsal neural arches with a centrodiapopohyseal fossa that extends internally as a pneumatic structure, which is separated by the mirroring structure by a thin septum, and both of which connect into a ventral, oval shaped internal pneumatic chamber, which is dorsal to and well separated from the neural canal*; 5) posterior dorsals with small round excavations on the posterior side of the distal extremity of the diapophyses*; 6) posteriormost dorsals have rudimentary aliform processes; 7) all dorsals display an absence of the spinodiapophyseal lamina in all dorsals, with a contact between the lateral spol and podl in posterior-most dorsals instead; 8) sacrals with dorsoventrally high neural spine; 9) ilium with round dorsal rim, hooks-shaped anterior lobe and dorsoventrally elongated pubic peduncle; 10) fused distal ischia with the paired distal shafts creating an angle of 110° to the horizontal; 11) pubis with torsion and kidney-shaped pubic foramen; 12) femur with posteromedially placed fourth trochanter, and laterally convex surface of femoral shaft. |
Measurements
No measurements are available
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| Source: g = genus, infrao = infraorder | |||||
| References: Marsh 1875, Peczkis 1995 | |||||
Age range: Middle Toarcian or 182.90000 to 180.40000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Toarcian | Argentina (Chubut) | Patagosaurus fariasi (28534 type locality: 28536 51937) |