Project - Mammalia

Project: Mammalia is a speculative evolution project that focuses on the world where birds never existed, while also having IRL plants and animals (including humans) still managing to evolve even without birds.

Alternate History
66 million years ago, all dinosaurs had became extinct, even the birds, which were the most adaptable, couldn't keep up with the changes from the K-T mass extinction. In the aftermath, insects flourished and became the dominant airborne creatures without the flying predators like birds around, but eventually, mammals have diversified into a wide range of species, including flying species such as bats, finally keeping the insects under control again. Without any sea pterosaurs or birds, bats and other mammals filled the void of the pterosaurs and seabirds' niches, giving rise to marine and flying seagoing mammals like seabats and penguins. Without algae-eating birds or pterosaurs, underwater plants choked many lakes and rivers, depriving oxygen for freshwater fish and crustaceans, killing many off, however, some otters called waterfowls have evolved to feed on aquatic plants and fill the ecological niches left behind by the ancient birds and pterosaurs that once fed on aquatic plants.