👉 Pygmaeopagurus is a genus of prehistoric marine reptile that lived during the Late Triassic period, around 251-230 million years ago. They are characterized by their large, elongated body shapes and a characteristic long neck, which allowed them to dive deep into the ocean to hunt prey. Pygmaeopagurus is known for its unique adaptation to aquatic life and played a crucial role in shaping the marine ecosystem during this time.