Callichimaera perplexa was found in Colombia along with several thousand other fossil crustaceans.
The study noted that the crab became the first known science floating arthropod with paddle-shaped legs.
"Callichimaera perplexa is so unique andstrange that it can be considered a new species of crab. We usually think of these arthropods as large animals with wide shells, strong claws, small eyes on long processes and a small tail hidden under the body. Our discovery challenges all these ideas and forces us to reconsider our definition of what traits make a crab a crab. ”
Javier Luque, lead author
For the first time in the history of the study of dinosaurs, paleontologists found their perfectly preserved prints on a rock with traces of skin.