Conversation so far:
What was the time frame of the Medieval era?
archaeological sites in Odisha state, particularly the Assia range of hills show inscriptions and carvings of dances that are dated to the 6th to 9th century CE.
Where are the carvings?
Important sites include the Ranigumpha in Udaygiri, and various caves and temples at Lalitgiri, Ratnagiri and Alatgiri sites.
Anything else interesting?
Actual sculptures that have survived into the modern era and panel reliefs in Odia temples.
Have the sculptures been dated to be from that era?
from the 10th to 14th century.
What were the dancers called?
the dancers called Maharis.

Question: What were their dances based on?
Self-contained rewrite: What were the Odissi dances based on?