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Dashanpusaurus dongi
Taxonomy
Dashanpusaurus dongi was named by Peng et al. (2005). Its type specimen is ZDM 5028, a partial skeleton, and it is a 3D body fossil. Its type locality is Dashanpu Dinosaur Quarry [lower], which is in a Bajocian/Oxfordian lacustrine sandstone/mudstone in the Shaximiao Formation of China. It is the type species of Dashanpusaurus.
Synonymy list
| Year | Name and author |
|---|---|
| 2005 | Dashanpusaurus dongi Peng et al. |
| 2022 | Dashanpusaurus dongi Ren et al. |
| 2023 | Dashanpusaurus dongi Ren et al. p. 5 |
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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.
†Dashanpusaurus dongi Peng et al. 2005
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Peng et al. 2005 | 12~13 cervicals, 13 dorsals, 4 sacrals and more than 45 caudals; short opisthocoelous cervical centra with elongate and deep pleurocoels and weak keels; relatively low cervical neural spines; spines of posterior cervicals and anterior dorsals transversely broadened and slightly bifurcated; dorsals plateocoelous or weakly amphicoelous; anterior dorsal centra with developed pleurocoels; higher and thick plate-like neural spines of middle and posterior dorsals with an expanded tip; all sacral centra and first three sacral spines fused; anterior caudals plateocoelous, middle and posterior caudals amphicoelous; short and robust scapula with obviously expanded distal end; straight and robust humerus with obviously expanded proximal end; low and elongate ilium with developed anterior process; relatively slender femur with a developed head; straight and robust tibia; radius about 66% of humerus length; and tibia about 59% of femur length. | |
| X.-X. Ren et al. 2023 | Dashanpusaurus dongi is a macronarian sauropod with the following unique combination of character states (autapomorphies are marked by *): midline keels are present on the ventral surfaces of anterior cervical vertebrae; the centra of the anterior, middle and posterior dorsal vertebrae are opisthocoelous, amphiplatyan to amphicoelous, and amphicoelous, respectively; neural canals are sub-square in anterior dorsal vertebrae*; diapophyses of anterior to middle dorsal vertebrae project dorsolaterally; a thin AL contacts the PRDL and PPDL, forming an angle of approximately 75° to the horizontal in middle dorsal vertebrae*; an IE is situated below the diapophyses of dorsal vertebrae; anterior to middle dorsal neural spines are slightly bifurcated with transversely extended metapophyses; neural spines have a slab-like morphology with expanded distal ends in posterior dorsal vertebrae; the medial spinopostzygapophyseal lamina (Med. SPOL) is prominent and robust and extends from the dorsal portion of the neural spine to the medial base of postzygapophysis on dorsal vertebrae; dorsal pneumatic fossae are large and simple without septa; four sacral vertebrae have completely fused centra; the anterior caudal vertebrae are amphicoelous; the ratio of maximum to minimum dorsoventral heights of the scapular blade is greater than two; there are four ridges on the anterodistal edge of the humerus*. |
Measurements
No measurements are available
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| Source: infrao = infraorder | |||||
| Reference: Marsh 1875 | |||||
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bajocian - Oxfordian | China (Sichuan) | Dashanpusaurus dongi (type locality: 24883) |