| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Kamuysaurus japonicus
Taxonomy
Kamuysaurus japonicus was named by Kobayashi et al. (2019). Its type specimen is HMG-1219, a skeleton (nearly complete skeleton with the skull and mandible), and it is a 3D body fossil. Its type locality is Shirafunenosawa River, Inasato (Locality 1), which is in a Maastrichtian marine siltstone in the Hakobuchi Formation of Japan. It is the type species of Kamuysaurus.
Synonymy list
| Year | Name and author |
|---|---|
| 2019 | Kamuysaurus japonicus Kobayashi et al. |
| 2021 | Kamuysaurus japonicus Kobayashi et al. p. 1 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Kamuysaurus japonicus Kobayashi et al. 2019
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Y. Kobayashi et al. 2019 | This specimen is assigned as a hadrosaurine hadrosaurid with the following unique characters: the midpoint of the quadratojugal notch positioned at roughly three-quarters of the total length of the quadrate from the dorsal end, short ascending process of the surangular, and anterior inclination of neural spines of sixth to thirteenth dorsal vertebrae. Diagnosed also by the unique combination of characters: slightly curved primary ridge of the maxillary teeth, high average height/width ratio of dentary tooth over 3.30, moderate medial extension of the symphyseal process of the dentary, anterior margin of the coronoid process of the dentary more developed than the posterior margin, triangular ventral margin of the anterior process of the jugal as wide as its height, moderately inclined palatine articular facet of the jugal, nearly straight caudal margin of the quadratojugal flange of the jugal, smoothly curved anterodorsal margin of the prefrontal along the orbital rim, squamosal process of the postorbital terminates anterior to the quadrate cotylus, long nasofrontal sutural surface of the frontal, subrectangular infratemporal fenestra, weak expansion of deltopectoral crest of the humerus, and slender humerus with humeral shaft less than 20% as wide as the length. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
|
|
||||
| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Marsh 1875 | |||||
Age range: Early/Lower Maastrichtian or 70.60000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Maastrichtian | Japan (Hokkaido) | Kamuysaurus japonicus (type locality: 129271) |