👉 Pisauridae is a family of extinct mammals from the Late Cretaceous period, which spanned approximately 10 to 25 million years ago. It was one of the largest and most diverse groups of mammal that ever lived on Earth. The Pisauridae were characterized by their long necks, large skulls with sharp teeth, and a massive body size. They had large, powerful jaws and were known for their distinctive spiral horns, which they used to grip onto