THREE SPECIES SEPATATED BY 450 MILLION YEARS

This is my 4 inch Asaphus p. (russian trilobite, 500 myo) with my Branchiosaur p. (2 inches and 300+ myo) with my 6 inch Meg. tooth (15 myo (aprox)). We are looking at three species separated by 450 million years of evolution sitting together. Just boggles my mind.