  This paper presents a method of a construction of tangentially degenerate
curves with a birational Gauss map, focusing on the non-classicality of
automorphisms. This method describes a generalization of Esteves--Homma's
example of this kind. In addition, this paper presents a smooth projective
curve with a birational Gauss map such that a general tangent line contains
three or more points of the curve, which answers a question raised by Kaji in
the affirmative.
