  We provide examples of transitive partially hyperbolic dynamics (specific but
paradigmatic examples of homoclinic classes) which blend different types of
hyperbolicity in the one-dimensional center direction. These homoclinic classes
have two disjoint parts: an "exposed" piece which is poorly homoclinically
related with the rest and a "core" with rich homoclinic relations. There is an
associated natural division of the space of ergodic measures which are either
supported on the exposed piece or on the core. We describe the topology of
these two parts and show that they glue along nonhyperbolic measures.
  Measures of maximal entropy are discussed in more detail. We present examples
where the measure of maximal entropy is nonhyperbolic. We also present examples
where the measure of maximal entropy is unique and nonhyperbolic, however in
this case the dynamics is nontransitive.
