What things are extinct and start with a p?

Several extinct species that start with the letter "P" include the Passenger Pigeon, which was once abundant in North America but was driven to extinction by hunting and habitat loss. Another example is the Pleistocene Megatherium, a giant ground sloth that roamed South America during the last Ice Age. Additionally, the Pyrenean Ibex, a subspecies of the Iberian ibex, was declared extinct in the early 2000s due to hunting and habitat destruction.