👉 Chiasognathus is a genus of extinct arthropod that lived during the Triassic period, approximately 235 to 206 million years ago. It was characterized by its large size and complex body structure, which included multiple legs with four toes on each foot. Chiasognathus had an elongated abdomen, a long thorax, and a slender tail that could extend up to 1.8 meters in length. Chiasognathus lived in a