The evolution of a penguin posted by narcissa haskins in science and society - best on thursday, november 11, 2010 at 8:18 pm in the 21 st century, many humans wonder why penguins are so unique. The evolution of modern penguins took place over the course of approximately 3 million years one of the descendants of the basal penguin, named by scientists as “penguin one,” is the ancestor of all penguins that now exist in the world, and it lived some 342-476 million years ago. The volant (flying) ancestors of penguins had a window in which the seas were free of largely free of competitors and low on predators this was a perfect time to drop flight altogether by 60million years ago, waimanu manneringi and waimanu tuatahi, two closely related species, had reached this critical stage in penguin evolution. Online shopping from a great selection at apps & games store.
Penguin evolution penguin antecedents the diversity of penguins in terms of where they live and size brings with it quite a few questions the evolution of this particular bird still has many unknown elements to it there are currently 17 species identified, but in the future dna could further result in that being broken down to include 20 species. Scientists don't have fossils of flighted penguin ancestors, and the earliest known penguin dates to just after the cretaceous-tertiary boundary (58 to 60 million years ago) it is tempting to speculate that the evolution of penguins happened in that explosive radiation [of mammal species] that happened just after the k-t event , when many species went extinct, speakman said.
The great auk of the northern hemisphere, now extinct, was superficially similar to penguins, and the word penguin was originally used for that bird, centuries ago they are only distantly related to the penguins, but are an example of convergent evolution.
Penguins are birds which, during their evolution, have forgotten to fly they're not the only birds, because emus, nandus, the well-known ostriches and coursers such as kiwis and wekas, and the flightless cormorants of the galapagos too, aren't able to fly too.
Surprisingly, none of the articles mentioned natural selection, even though national geographic‘s headline quipped, “why did penguins stop flying the answer is evolutionary ” there was no mention of a mechanism for evolving a penguin out of a flying seabird.