Tucumilla Formation

The Tucumilla Formation is a Tremadocian geologic formation of southern Bolivia. The sandstones, shales and siltstones crop out in the José María Avilés and Eustaquio Méndez Provinces.

Fossil content
The formation has provided the following fossils:


 * Apheoorthis samensis
 * Notorthisina notoconcha
 * Angelina sp.
 * Asaphellus sp.
 * Broeggeria sp.
 * Bucania sp.
 * Dictyonema sp.
 * Finkelnburgia sp.
 * Jujuyaspis sp.
 * Kainella sp.
 * Leptoplastides sp.
 * Micragnostus sp.
 * Parabolina sp.
 * Richardsonella sp.
 * Shumardia sp.
 * Tropidodiscus sp.