3Fossil sites
Boquillas Formation
Boquillas Formation in Mexico: 3 fossil sites. Typical age: 94–90 million years (Cretaceous).
3Fossil sites
15Finds
94–90 million yearsTypical age
CretaceousMain period
Where its fossils were found
Cretaceous
By geological period
Cretaceous3
What was found
Ammonites · 15Spathites, Prionocyclus, Romaniceras (Romaniceras), Romaniceras (Yubariceras), Hoplitoides, Mossamedites, Collignoniceras, Neoptychites, Coilopoceras
Towns with the most fossil sites nearby
Other formations of the same period
Cretaceous
La Caja Formation 89Cerro del Pueblo Formation 86La Peña Formation 76Taraises Formation 41Rosario Formation 39Alisitos Formation 28Mural Formation 26Cumburindio Formation 25Cárdenas Formation 22San Lucas Formation 22El Gallo Formation 21Aguja Formation 17Olmos Formation 17Mexcala Formation 16Tlayúa Formation 16San Juan Raya Formation 15Ocozocoautla Formation 15Escondido Formation 14Mal Paso Formation 13Indidura Formation 13Agua Nueva Formation 12Aurora Limestone 10Buda Limestone 9Sabinal Formation 9