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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Baiyinosaurus baojiensis
Taxonomy
Baiyinosaurus baojiensis was named by Li et al. (2024). It is not extant. Its type specimen is IVPG-D021, a partial skeleton. Its type locality is Pinchuan, Baiyin City, which is in a Bathonian lacustrine deltaic sandstone in the Wangjiashan Formation of China. It is the type species of Baiyinosaurus.
Synonymy list
Year | Name and author |
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2024 | Baiyinosaurus baojiensis Li 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.
†Baiyinosaurus baojiensis Li et al. 2024
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Diagnosis
Reference | Diagnosis | |
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N. Li et al. 2024 | Baiyinosaurus differs from all other stegosaurs by possession of the following autapomorphy: the frontal is wider than long (score 1 for character 32), and not only contributes to the medial margin of the supratemporal fenestra but also makes up a very great contribution to the anterior margin of the supratemporal fenestra. Baiyinosaurus also possesses the following character combination on dorsal vertebrae: (1) the neural arches are not greatly elongated dorsally: the ratio of neural arch height to neural canal height is 1.59 (character 6, a continuous character); (2) the parapophyses are well developed and project somewhat laterally on stalks in anterior view (score 0 for character 64); (3) the neural spines are anteroposteriorly broad and axially expanded in lateral view: the ratio of neural spine length (measured at the base) to centrum length is 0.75 (character 9, a continuous character). |
Measurements
No measurements are available
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Source: o = order | |||||
Reference: Marsh 1875 |
Age range: Late/Upper Bathonian or 167.70000 to 164.70000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Late/Upper Bathonian | China (Gansu) | Baiyinosaurus baojiensis (type locality: 235625) |