  Effective field theories with explicit Lorentz violation are intimately
linked to Riemann-Finsler geometry. The quadratic single-fermion restriction of
the Standard-Model Extension provides a rich source of pseudo-Riemann-Finsler
spacetimes and Riemann-Finsler spaces. An example is presented that is
constructed from a 1-form coefficient and has Finsler structure complementary
to the Randers structure.
