Generalized helicoid,developable onto an ellipsoid of revolution

The model is developable onto an ellipsoid of revolution.

Enneper's surface

Enneper's surface is the famous model of minimal surfaces.

Enneper's surface2

Enneper's surface is the famous model of minimal surfaces.

Minimal surface with a one-parameter family of parabolas

The model is a minimal surface which contains a one-parameter family of parabolas.