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Jinbeisaurus wangi
Taxonomy
Jinbeisaurus wangi was named by Wu et al. (2020). Its type specimen is SMG V0003, a partial skeleton (Maxilla, dentary, vertebrae and pubis), and it is a 3D body fossil. Its type locality is Yangjiayao, which is in a Cenomanian/Campanian fluvial mudstone in the Huiquanpu Formation of China. It is the type species of Jinbeisaurus.
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Jinbeisaurus wangi Wu et al. p. 3 |
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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.
†Jinbeisaurus wangi Wu et al. 2020
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| X.-C. Wu et al. 2020 | It differs from other tyrannosauroids in the following combination of derived characters: (1) in lateral view, the interfenestral strut (between the antorbital fenestra and maxillary fenestra) is broad and covers more than 85% of the cranio-caudal length of the maxillary fenestra; (2) in lateral view, the ventral part of the antorbital fossa, ventral to the antorbital fenestra at the point just posterior to the tooth row is deeper than the subcutaneous surface below it; (3) the posteroventral end of the promaxillary recess on the medial surface stops above the fifth maxillary alveolus; (4) in medial view, the narrow septum between the promaxillary recess and maxillary antrum becomes broad ventrally and bears a small but deep fossa on its base: (5) in medial view, the anterior part of the maxillary antrum is nearly as large as the maxillary fenestra; (6) in lateral view, the dorsal row of the dentary foramina extends along the midheight of the dentary; (7) both anterior and posterior carinae bear a similar number of denticles per unit length (about 16 measured from the middle section of the tooth crown) in the maxilla and dentary teeth; and (8) the well-developed posterior process of the pubic foot forms an acute angle (about 70°) relative to the shaft of the bone. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Marsh 1875, Benton 1983 | |||||
Age range: base of the Cenomanian to the top of the Campanian or 100.50000 to 72.10000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian - Campanian | China (Shanxi) | Jinbeisaurus wangi (type locality: 212637) |