Tag Archive for 'Quadrupedalism'

An artist’s reconstruction of Sonselasuchus cedrus in its environment in what is now Petrified Forest National Park, 215 million years ago. Image credit: Gabriel Ugueto.

Triassic Crocodile Relative May Have Learned to Walk on Two Legs

Mar 9, 2026 by Enrico de Lazaro

Fossils from the Chinle Formation of Petrified Forest National Park in Arizona, the United States, reveal that Sonselasuchus cedrus, a species of shuvosaurid...

Graecopithecus freybergi lived 7.2 million years ago in the dust-laden savannah of the Athens Basin. This view from Graecopithecus freybergi’s place of discovery, Pyrgos Vassilissis, to the southeast over the plain of Athens and under a reddish cloud of Sahara dust; in the background: Mount Hymettos and Mount Lykabettos. Image credit: Velizar Simeonovski.

Graecopithecus May Have Been Partially Bipedal, New Fossil Suggests

Mar 5, 2026 by Sergio Prostak

A 7.2-million-year-old thigh bone unearthed at the fossil site of Azmaka in southern Bulgaria displays a mosaic of features suggesting a unique combination...

Drummond-Clarke et al. show that trees were an essential component of the hominin adaptive niche, with bipedalism evolving in an arboreal context, likely driven by foraging strategy. Illustration by Arturo Asensio, via Quo.es.

Humans Evolved from African Ape-Like Ancestor, Research Suggests

Oct 20, 2025 by News Staff

In new research, paleoanthropologists from the United States and Canada analyzed the morphology of a hominin talus (large bone in the ankle that joins...