Were penguins alive in the Jurassic era?

Penguins are an ancient species, first appearing in the Eocene era around 40 million years ago. While many other species of bird from back then, such as Palaeeudyptes and Pachydyptes, are now extinct. Most fossils found of penguins are large, but not larger than today's Emperor Penguin. All fossils found indicate that all penguins lived in the Southern Hemisphere.