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Arthur T Knackerbracket has found the following story:

The giant waddling sea bird stood 1.6 metres (63 inches) high and weighed 80 kilograms, about four times heavier and 40cm taller than the modern Emperor penguin, researchers said.

Named "crossvallia waiparensis", it hunted off New Zealand's coast in the Paleocene era, 66-56 million years ago. An amateur fossil hunter found leg bones belonging to the bird last year and it was confirmed as a new species in research published this week in Alcheringa: An Australasian Journal of Palaeontology.

Canterbury Museum researcher Vanesa De Pietri said it was the second giant penguin from the Paleocene era found in the area.

"It further reinforces our theory that penguins attained great size early in their evolution," she said.

Scientists have previously speculated that the mega-penguins eventually died out due to the emergence of other large marine predators such as seals and toothed whales.

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