El descubrimiento de Citipati osmolskae ha sido fundamental para entender mejor la evolución de las aves y su comportamiento reproductivo

lo que sugiere una amplia distribución geográfica durante su época

pointed teeth in its jaws

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Sphenacodon ferox Scale:1:35 El descubrimiento de Citipati osmolskaeSphenacodon ferox : A primitive predator on the path of mammals During the Early Permian, some 300 million years ago, terrestrial ecosystems were dominated by a diverse and constantly evolving fauna. Among the most prominent predators of that time was Sphenacodon ferox , a carnivorous synapsid that inhabited the regions that now constitute the southwestern United States. This animal, although extinct for hundreds of millions of years, represents a key