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Taohelong

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Taohelong Temporal range: Early Cretaceous, 113–110 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	†Ornithischia
Clade:	†Thyreophora
Clade:	†Ankylosauria
Family:	†Nodosauridae
Genus:	†Taohelong Yang et al., 2013
Type species
†Taohelong jinchengensis Yang et al., 2013

Taohelong is a genusofnodosaurid dinosaur known from Lower Cretaceous rocks in north-central China.

Taohelongisbased 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 speciesisTaohelong 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 taxontoPolacanthus foxii, making it the first polacanthine to be described from Asia.^[1]

References[edit]

^ ^a ^b ^c 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 English). 51 (4): 265–277.