HOME >> BIOLOGY >> NEWS
Penguin bones from 'land of fire' rewrite bird's evolution

Fossilized bones found in Tierra del Fuego, Argentina, are likely those of the earliest known South American penguin, which probably lived 20 million years earlier than scientists had supposed. The new find doubles the known fossil record of penguins in South America.

That's the conclusion of Dr. Julia A. Clarke, assistant professor of marine, earth and atmospheric sciences at North Carolina State University, and her colleagues from Argentina, who published their findings in the December 2003 issue of the journal Novitates of the American Museum of Natural History (AMNH).

According to Clarke, the specimen consists of parts of a pelvic girdle and a leg and dates to the Eocene epoch of Earth's history about 40 million years ago sometimes called the "early age of mammals." Found at Punta Torcida on Tierra del Fuego's Atlantic coast, the fossilized bones are sufficiently different from known penguin anatomy to rewrite the story of penguin evolution.

Tierra del Fuego, the southernmost portion of the South American continent, means "land of fire" in English. Argentinean geologist Eduardo B. Olivero's team discovered the fossils in 1999, and Olivero asked Clarke to help identify the bones.

"This early part of the penguin lineage must have arrived in South America during a comparatively warm period in Earth's history," said Clarke, "coincident with the beginning of, or just before, a major global cooling trend that occurred in the mid-Eocene. All other penguin fossils date to long after that 'icehouse' phase began and after the Antarctic icecap is inferred present."

The new find may tell a radically different story from previous discoveries about penguins and their prehistoric travels. Despite the popular association of penguins with cold polar regions, said Clarke, species of the birds live near the equators as well. The earliest penguins, then, might have developed in warmer climates, and slowly adapted as their habitats gr
'"/>

Contact: Dr. Julia Clarke
julia_clarke@ncsu.edu
919-515-7648
North Carolina State University
12-Feb-2004


Page: 1 2

Related biology news :

1. Penguins ingest mollusk shells to obtain calcium for thicker eggshells
2. Ecotourism: Penguins can get used to people
3. Increasing Frequency Of El Nino Takes Toll On Northern Hemispheres Only Penguins
4. Beset By Human Competition, Penguins Must Take Marathon Food Trips To Avoid Starvation, A Researcher Finds
5. The bare bones of cutting the fat
6. Stanford study questions identity of alleged Romanov bones
7. How meals become bones
8. Kidney injurys harmful effects on bones blocked in mice
9. UMHS researchers find clues to growing new jawbones in cancer patients after radiation therapy
10. Early mammals used pelvic bones to trot, study finds
11. Tufts University reports high protein intake and calcium supplementation helps healthy bones

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/28/2017)... , Spanien, 27. Februar 2017  EyeLock LLC, ... Iris-Scan, wird seine erstklassige biometrische Lösung zur ... 835 mit X16 LTE auf dem Mobile ... März) am Qualcomm-Stand in Halle 3, Stand ... beinhaltet die Sicherheitsplattform Qualcomm Haven™ – eine ...
(Date:2/21/2017)... and PORTLAND, Ore. , Feb. 22, ... Avamere Family of Companies (Avamere Health Services, Infinity Rehab, ... six-month research study that will apply the power of ... senior living and health centers. By analyzing data streaming ... gain insights into physical and environmental conditions, and obtain ...
(Date:2/13/2017)... Former 9/11 Commission border counsel and Special Counsel to ... of Identity Strategy Partners, LLP, today releases the following ... Protecting the Nation From Foreign Terrorist Entry Into the ... Trump,s ,Travel Ban, Executive Order gains more notoriety and ... ban, it is important that our national discourse regain ...
Breaking Biology News(10 mins):
(Date:3/27/2017)... , March 27, 2017 Roka Bioscience, Inc. ... testing solutions for the detection of foodborne pathogens,  today announced ... Sidoti & Company Spring 2017 Convention on March 29 at ... York Marriott Marquis. About Roka Bioscience ... Roka ...
(Date:3/27/2017)... 2017 Infectex Ltd., a Russian portfolio company of Maxwell Biotech ... SQ109 added to the standard drug therapy regimen in patients with multidrug-resistant pulmonary tuberculosis ... ( USA ) and the US National Institutes of Health. ... ... Fund Logo ...
(Date:3/27/2017)... , ... March 27, 2017 , ... PMG Research ... Collaborations (CTC) conference presented by The Conference Forum in Boston on April 3-4, ... collaborate to drive improved clinical trial outcomes and bring them closer to the patient. ...
(Date:3/27/2017)... NEW YORK , March 27, 2017 /PRNewswire/ ... company developing novel therapies for neurodegenerative diseases, including ... confirmation that its application to list the Company,s ... been approved by The NASDAQ Stock Market, a ... of the listing, Neurotrope will ring the Opening Bell ...
Breaking Biology Technology:
Cached News: