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:6/3/2016)... June 3, 2016 ... Nepal hat ein ... hochsicherer geprägter Kennzeichen, einschließlich Personalisierung, Registrierung und ... der Produktion und Implementierung von Identitätsmanagementlösungen. Zahlreiche ... im Januar teilgenommen, aber Decatur wurde als ...
(Date:6/2/2016)... LONDON , June 2, 2016 ... Systems, Manned Platforms, Unmanned Systems, Physical Infrastructure, Support & ... intelligence provider visiongain offers comprehensive analysis of ... that this market will generate revenues of $17.98 billion ... Systems acquired DVTEL Inc, a leader in software and ...
(Date:5/20/2016)... , May 20, 2016  VoiceIt is excited ... with VoicePass. By working together, VoiceIt ...  Because VoiceIt and VoicePass take slightly different approaches ... increases both security and usability. ... about this new partnership. "This marketing ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the Industry Network ... Supplyframe Design Lab . Located in Pasadena, Calif., the Design Lab’s mission is ... projects are designed, built and brought to market. , The Design Lab is ...
(Date:6/23/2016)... , June 23, 2016 Apellis ... Phase 1 clinical trials of its complement C3 ... single and multiple ascending dose studies designed to ... (PD) of subcutaneous injection in healthy adult volunteers. ... (SC) either as a single dose (ranging from ...
(Date:6/23/2016)... June 23, 2016 On Wednesday, June ... 4,833.32, down 0.22%; the Dow Jones Industrial Average edged 0.27% ... at 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage on the ... Nektar Therapeutics (NASDAQ: NKTR ), Aralez Pharmaceuticals Inc. ... BIND ). Learn more about these stocks by ...
(Date:6/23/2016)... ... 2016 , ... Velocity Products, a division of Morris Group, ... exclusively for Okuma CNC machining centers at The International Manufacturing Technology Show, IMTS, ... companies with expertise in toolholding, cutting tools, machining dynamics and distribution, Velocity SMART ...
Breaking Biology Technology:
Cached News: