👉 Cryomonadida is a group of extinct marine animals that lived during the Mesozoic era, approximately 689 million years ago. These creatures were characterized by their large size and streamlined bodies, as well as their ability to swim in the ocean currents. They likely inhabited shallow waters near the shore or had adapted to living on the seafloor. The exact details of Cryomonadida's life are not fully known, but it is believed that they lived for thousands of years