👉 Chondrillinae is a group of extinct marine invertebrates that lived during the Mesozoic era, about 65-63 million years ago. It includes chondrichthyes, which are eel-like creatures with an elongated skeleton and a robust body. Chondrillinae were also known for their unique adaptations for locomotion, including the ability to swim or dive, as well as their ability to regenerate lost limbs and organs.
