Analysis of information sources in references of the Wikipedia article "Nataraja" in English language version.
He also points out that these [Bharatanatyam dance] stances are very similar to Yoga Asanas, and in the Gopuram walls at Chidambaram, at least twenty different classical Yoga Asanas are depicted by the dancers, including Dhanurasana, Chakrasana, Vrikshasana, Natarajasana, Trivikramasana, Ananda Tandavasana, Padmasana, Siddhasana, Kaka Asana, Vrishchikasana and others.
in an Old Dhaka temple ... a stone statue of Nateshwar, a depiction of dancing Shiva on the back of his bull-carrier Nandi
He also points out that these [Bharatanatyam dance] stances are very similar to Yoga Asanas, and in the Gopuram walls at Chidambaram, at least twenty different classical Yoga Asanas are depicted by the dancers, including Dhanurasana, Chakrasana, Vrikshasana, Natarajasana, Trivikramasana, Ananda Tandavasana, Padmasana, Siddhasana, Kaka Asana, Vrishchikasana and others.