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Tuojiangosaurus multispinus
Taxonomy
Tuojiangosaurus multispinus was named by Dong et al. (1977). Its type specimen is CV 209, a skeleton, and it is a 3D body fossil. Its type locality is Wujiaba Dam Quarry, Zigong, which is in a Bathonian/Callovian terrestrial horizon in the Shaximiao Formation of China. It is the type species of Tuojiangosaurus. It was considered monophyletic by Maidment and Wei (2006).
It was recombined as Tuojangosaurus multispinus by Olshevsky and Ford (1993).
It was recombined as Tuojangosaurus multispinus by Olshevsky and Ford (1993).
Synonymy list
Year | Name and author |
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1977 | Tuojiangosaurus multispinus Anonymous p. 37 |
1977 | Tuojiangosaurus multispinus Dong et al. |
1978 | Tuojiangosaurus multispinus Dong et al. |
1981 | Tuojiangosaurus multispinus Anonymous |
1981 | Tuojiangosaurus multispinus Olshevsky p. 36 |
1983 | Tuojiangosaurus multispinus Dong et al. p. 105 figs. Pl. 35-39 |
1984 | Tuojiangosaurus multispinus He p. 75 |
1985 | Tuojiangosaurus multispinus Zhao p. 289 |
1990 | Tuojiangosaurus multispinus Dong p. 260 |
1990 | Tuojiangosaurus multispinus Galton |
1992 | Tuojiangosaurus multispinus Dong pp. 82-83 |
1993 | Tuojangosaurus multispinus Olshevsky and Ford |
2001 | Tuojiangosaurus multispinus Carpenter et al. p. 73 |
2004 | Tuojiangosaurus multispinus Galton and Upchurch p. 345 |
2005 | Tuojiangosaurus multispinus Peng et al. |
2006 | Tuojiangosaurus multispinus Jiang p. 11 |
2006 | Tuojiangosaurus multispinus Maidment and Wei p. 622 |
2007 | Tuojiangosaurus multispinus Wings et al. p. 116 |
2008 | Tuojiangosaurus multispinus Maidment et al. p. 377 |
2010 | Tuojiangosaurus multispinus Maidment p. 205 |
2011 | Tuojangosaurus multispinus Li et al. p. 24 |
2014 | Tuojiangosaurus multispinus Ulansky p. 8 |
2016 | Tuojiangosaurus multispinus Galton and Carpenter p. 191 |
2018 | Tuojiangosaurus multispinus Hao et al. p. 431 |
2019 | Tuojiangosaurus multispinus Costa and Mateus p. 4 |
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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.
†Tuojiangosaurus multispinus Dong et al. 1977
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Diagnosis
Reference | Diagnosis | |
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Z. Dong et al. 1983 | A large stegosaur with a skull typical for the subfamily. Zygomatic arch is not developed, two to three supraorbitals are present with coarse tubercular nodes ornamenting their surfaces. Numerous tightly packed mandibular and maxillary teeth are present with maxillary teeth being superimposed, or tiled. Four sacral vertebrae are present, pelvic girdle is spaceously broad, sacral ribs and diapophyses are not completely fused, and as such, the dorsal spines are not completely fused. Armor is represented in a variety of morphologies: in the cervical region the armor is circular, in the dorsal regions it is triangular, whereas in the sacral and caudal regions it is conically compressed. A conspicuous fourth trochanter is present on the femur, the femur-humerus ratio is 1.57, and the ventral scapula is not strongly expanded. | |
G. Peng et al. 2005 | Large-sized stegosaur about 7 m of body length. It is recognized by low and elongate skull; undeveloped jugal; 2~3 pairs of supraorbitals with bulky dorsal surfaces; upper and lower dentitions densely arranged teeth that overlapped each other; 4 fused sacrals co-ossified with sacral ribs and forming a broad sacrum; sacral foramen not completely enclosed; varied morphology of dermal plates that oval-shaped in neck, elongate triangular in back, and compressed conical-shaped in sacrum and tail; femur with an indistinct fourth trochanter; length of femur about 1.57 times of that of humerus; and scapula with an indistinctly expanded distal end. | |
S. C. R. Maidment and G. Wei 2006 | Differs from all other stegosaurs in having frontals that are wider than long and an ilium in which there is a prominent angle leading to a clear separation between the supra-acetabular process and the very well-developed posterior process. | |
S. C. R. Maidment et al. 2008 | Differs from all other stegosaurs in having frontals that are wider than long and an ilium in which there is a prominent angle leading to a clear separation between the supra-acetabular process and the very well developed posterior process (Fig. 2F).
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Measurements
No measurements are available
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Source: g = genus, o = order | |||||
References: Peczkis 1995, Marsh 1875 |
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Bathonian - Callovian | China (Sichuan) | Tuojiangosaurus multispinus (type locality: 51914) |