What is the oldest prehistoric animal still alive? What animals were on earth before dinosaurs?

What is the oldest prehistoric animal still alive? What animals were on earth before dinosaurs?
What animal has the most attacks on humans? How many animal attacks happen a year? Why do wild animals attack humans? What animal kills the most humans per year in India? Why do wild animals attack humans? What animal kills the most humans per year in India? What animal kills the most humans in 2021? What animal eats the most humans a year? What animal kills the most in the USA? What mammal kills the most humans in us? Why do wild animals attack humans? What animal kills the most humans in US? What animal kills the most zookeepers?
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