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Giant prehistoric Kiwi penguin reconstructed

Washington, Tue, 28 Feb 2012 ANI

Washington, Feb 28 (ANI): After 35 years, researchers have recreated a giant fossil penguin that inhabited New Zealand nearly 25 million years ago, thus shedding new light on the prehistoric penguin diversity.

 

The bones were collected in 1977 by Dr. Ewan Fordyce, a paleontologist from the University of Otago, New Zealand.

 

In 2009 and 2011, Dr. Dan Ksepka, North Carolina State University research assistant professor of marine, earth and atmospheric sciences and North Carolina Museum of Natural Sciences colleague Dr. Paul Brinkman travelled to New Zealand to aid in the reconstruction of the giant penguin fossil.

 

Researchers dubbed the penguin Kairuku, a Maori word that loosely translates to "diver who returns with food."

 

Ksepka was interested in the fossil because its body shape is different from any previously known penguin, living or extinct.

 

He was also interested in the diversity of penguin species that lived in what is now New Zealand during the Oligocene period, approximately 25 million years ago.

 

"The location was great for penguins in terms of both food and safety. Most of New Zealand was underwater at that time, leaving isolated, rocky land masses that kept the penguins safe from potential predators and provided them with a plentiful food supply," according to Ksepka.

 

Kairuku was one of at least five different species of penguin that lived in New Zealand during the same period.

 

The diversity of species is part of what made the reconstruction difficult, and the penguin's unique physique added to the difficulty.

 

"Kairuku was an elegant bird by penguin standards, with a slender body and long flippers, but short, thick legs and feet," said Ksepka.

 

"If we had done a reconstruction by extrapolating from the length of its flippers, it would have stood over 6 feet tall. In reality, Kairuku was around 4-feet-2 inches tall or so."

 

The researchers reconstructed Kairuku from two separate fossils, using the skeleton of an existing king penguin as a model.

 

The result is a tall bird with an elongated beak and long flippers - easily the largest of the five species that were common to the area in that time period.

 

Ksepka hopes that the reconstruction of Kairuku will give other paleontologists more information about some the other fossils found in that area as well as add to the knowledge about giant penguin species.

 

"This species gives us a more complete picture of these giant penguins generally, and may help us to determine how great their range was during the Oligocene period," Ksepka added.

 

Their study has been published in the Journal of Vertebrate Paleontology. (ANI)

 


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