similar a lo que se observa en algunos animales modernos

leaving a trail of ephemeral bubbles in their wake

Dunkleosteus was still a formidable predator in its ecosystem

which could have allowed it to grab objects or prey

Mercuriceratops gemini Avaceratops similar a lo que seMercuriceratops gemini is a ceratopsian dinosaur that lived during the Late Cretaceous period, approximately 77 million years ago , in what is now North America. Its fossils have been found in geological formations in Montana (United States) and Alberta (Canada), suggesting that it inhabited a wide region of the Laramidian ecosystem. It was formally described in 2014 and is distinguished by one of the most unusual features among ceratopsians: a