Unlike other brontotheres

Swimming in concentric circles

These spines were a distinctive feature of its back

Ceratosaurus was a medium-sized bipedal dinosaur

Protemnodon anak Variant:Hand-painted Unlike other brontotheresProtemnodon anak was a large diprotodontid marsupial from the Pleistocene of Australia and New Guinea, belonging to the macropodidae group, which includes modern kangaroos and wallabies. It represents one of the largest species within the genus Protemnodon, characterized by a more robust body build and less specialized for jumping than modern kangaroos. Its skeleton shows a massive body, with a strong and relatively rigid spine, adapted to support