After Shackleton, 2005

Villebrunaster Spencer, 1951
        †Ambullaster Fell, 1963b

        †Villebrunaster thorali Spencer, 1951
            †Chinianaster levyi Thoral, 1935 (in partim)
            †Villebrunaster thorali Spencer, 1951
            †Villebrunaster thorali (Spencer); Fell, 1962
            †Villebrunaster thorali Fell, 1963a
            †Ambullaster ubachsi Fell, 1963b
            †Ambullaster ubachsi Fell; Spencer & Wright, 1966
            †Villebrunaster thorali Spencer; Spencer & Wright, 1966
            †Ambullaster ubachsi Fell; Blake, 1982
            †Villebrunaster thorali Spencer; Blake, 1982
            †Villebrunaster thorali Spencer; Shackleton, 2005

Reference(s):