Animals that have existed since the time of dinosaurs have ancient lineages, include –
Crocodiles and Alligators are reptiles have been around for about 200 million years and have changed very little in that time.
Horseshoe Crabs creatures have been around for over 400 million years, predating the dinosaurs.
Sharks have existed for over 400 million years, with some of their ancestors predating the dinosaurs.
Coelacanths ancient fish were thought to be extinct until a living specimen was found in 1938. They have been around for over 400 million years.
Ginkgo biloba is the only surviving species of an ancient group of trees that date back around 270 million years. These species have shown remarkable adaptability and continuity through Earth’s history.