Taohelong
| Taohelong Temporal range: Early Cretaceous, 113–110Ma | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Order: | †Ornithischia |
| Family: | †Nodosauridae |
| Subfamily: | †Polacanthinae |
| Genus: | †Taohelong Yang et al., 2013 |
| Type species | |
| †Taohelong jinchengensis Yang et al., 2013 | |
Taohelong is a genus of nodosaurid dinosaur known from Lower Cretaceous rocks in north-central China.
Taohelong is based on Gansu Dinosaur Museum (GSDM) 00021, fossils including a tail vertebra, ribs, a left ilium (the main bone of the hip), and bony armor recovered from the Hekou Group in the Lanzhou-Minhe Basin. The animal's armor includes part of a "sacral shield", a carpet of osteoderms over the hips found in some other ankylosaurians. Taohelong was named and described in 2013 by Yang Jing-Tao, You Hai-Lu, Li Da-Qing, and Kong De-Lai. The type species is Taohelong jinchengensis. The generic name means "dragon (long) of the river (he) Tao". The specific name refers to the provenance at Jincheng.[1]
The describers established some diagnostic traits. The neural channel of the tail vertebra has a cross-section like an inverted trapezium. In top view the profile of the outer rim of the ilium is like a mirrored "S". The osteoderms of the sacral shield are irregular in both shape and size.[1]
Taohelong was placed in the Nodosauridae, more precisely in the Polacanthinae. Yang et al. performed a phylogenetic analysis and found Taohelong to be the sister taxon to Polacanthus foxii, making it the first polacanthine to be described from Asia.[1]
References
- ↑ 1.0 1.1 1.2 Yang J.-T.; You H.-L.; Li D.-Q.; Kong D.-L. (2013). "First discovery of polacanthine ankylosaur dinosaur in Asia" (PDF). Vertebrata PalAsiatica (in Chinese and with English abstract) 51 (4): 265–277.