The type species , `` A. remotus '' , is known from a partial skull and three foot bones recovered from Mongolian sediments which were deposited in a humid floodplain about 70 million years ago .
The type species , `` A. remotus '' , is known from a partial skull and three foot bones . They were got from Mongolian sediments which were deposited in a humid floodplain about 70 million years ago .