If the Phylactolaemata were evolved from the type of structure represented by Phoronis or the Pterobranchia, the Gymnolaen ata should be a further modification of this type, and the comparative study of the embryology of the.two orders would appear to be meaningless.
The Murtagh-ata (25,780 ft.), shoot up far above the limits of perpetual snow.
AULIE-ATA, a town and fort of Russian Turkestan, province of Syr-darya, 152 m.
The axis, or backbone, of Pamir formation is the great meridional mountain chain of Sarikol - the ancient Taurus of tradition and history - on which stands the highest peak north of the Himalaya, the Murtagh Ata (25,000 ft.).
In the Muztagh-ata or Tagarma, of 23,000 ft.
In1906-1908Dr Stein made a second and more important journey, principally for the purpose of antiquarian research, though he also carried out important geographical investigations, with the assistance of a native surveyor, in the Eastern Pamirs (about Mustagh-ata), in the Nissa valley south of Khotan, and elsewhere.
The Alexander Mountains terminate over against the town of Aulie-ata (70 20' E.) at the relatively low altitude of 2460 ft., though farther east they rise to 13,000-14,000 ft., and even reach 15,350 ft.