Siamodon
| Siamodon | |
|---|---|
| |
| Tooth of Siamodon nimngami | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Ornithopoda |
| Clade: | †Iguanodontia |
| Genus: | †Siamodon Buffetaut & Suteethorn, 2011 |
| Type species | |
| †Siamodon nimngami Buffetaut & Suteethorn, 2011
| |
Siamodon is an
Discovery
Siamodon is known from the
Description
Siamodon shows a combination of plesiomorphic and apomorphic features, including a maxilla shaped like an isosceles triangle, with the dorsal process located at about mid-length of the bone; a strong longitudinal bulge on the medial surface of the maxilla; at least 25 maxillary teeth, which bear a prominent median primary ridge, and one short weak subsidiary ridge or no subsidiary ridge at all, and mamillated denticles on the crown margins. The maxilla is 230 millimeters long, and has a height of 100 millimeters. The height of the isolated tooth is about 25-28 millimeters, and the width is about 14-17 millimeters.[1]
Siamodon differs from more basal iguanodontians, such as
The combination of characters seen in the maxilla of Siamodon nimngami indicate that it belongs to a group of iguanodontians more derived than Iguanodon but basal to Hadrosauridae. It may be closely related to Probactrosaurus from China but they differ in the number of tooth positions.[1]
Etymology
Siamodon was first named by
References
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