approximately 12-13 million years ago

Estas placas y espinas estaban fusionadas con los huesos subyacentes

Mediana: 70 mm Al

A new phylogenetic study of the species Brontornis burmeisteri places it as a member of the Anseriformes group and not a terror bird

Prenocephale prenes Variant:Unprimed approximately 12-13 million years agoPrenocephale prenes is an extinct genus of dinosaur belonging to the Pachycephalosauridae family. It lived during the Late Cretaceous period, approximately 70 million years ago, in what is now Mongolia. Prenocephale prenes was characterized by its distinctive bony dome on top of its skull, which was made up of thickened bones. This dome was especially prominent in adult individuals and it is believed that it may have been used in intraspecific combat