The type name is first given and then all of the variants of the type follow. Links in the text provide photographs of the ceramic types. It may be difficult to distinguish Convento plainware, Casas Grandes plainware, and Alma Plain because they may be the local variants of the same type. Both Convento and Casas Grandes plainware range from brown to black to reddish brown. According to Di Peso et al.
Sherds are thick, coarse and exhibit a dark gray core with fine-grained sand temper.
Convento is more porous than Casas Grandes. El Paso Brownware El Paso brownware is generally brown to dark brown. The distinguishing characteristic is very coarse-grained sand temper that can be seen on the surface. The core is dark gray with large sand particles. Usually the exterior side has a polished red slip and the interior side is brown and unslipped.