text-only page produced automatically by LIFT Text Transcoder Skip all navigation and go to page contentSkip top navigation and go to directorate navigationSkip top navigation and go to page navigation
National Science Foundation
News
design element
News
News From the Field
For the News Media
Special Reports
Research Overviews
NSF-Wide Investments
Speeches & Lectures
NSF Current Newsletter
Multimedia Gallery
News Archive
News by Research Area
Arctic & Antarctic
Astronomy & Space
Biology
Chemistry & Materials
Computing
Earth & Environment
Education
Engineering
Mathematics
Nanoscience
People & Society
Physics
 

Email this pagePrint this page


Press Release 97-071
Strange South American Fossil Mammals Found in Madagascar and India

December 3, 1997

This material is available primarily for archival purposes. Telephone numbers or other contact information may be out of date; please see current contact information at media contacts.

A strange group of fossil mammals, heretofore only known in South America, has been discovered on the island of Madagascar and in India. The unexpected discoveries were announced in this week's issue of the journal Nature by an international team of researchers. The team was funded by the National Science Foundation (NSF) and led by paleontologist David Krause of the State University of New York at Stony Brook.

The 65-70 million year old mammals, dating from the Late Cretaceous period, were unrelated to any groups living today and are known as gondwanatheres. The discovery of their highly distinctive teeth in such disparate places as South America, Madagascar and India has fundamental implications for plate tectonics, the theory that landmasses move slowly over the face of the earth and were in different places in the past than they are today.

Ironically, though the group of mammals was previously known only to be from Argentina, it was named Gondwanatheria after the supercontinent of Gondwana, which once included all of the landmasses of the southern hemisphere.

"These are major discoveries that go far beyond their obvious significance to paleontologists," says Chris Maples, program director in NSF's division of earth sciences, which funded Krause's work. "Krause and his large-scale, multi-investigator team have provided an excellent example of the contributions that paleontology can make to many areas of geoscience, including tectonic plate positions in Earth's past."

Krause says, "Finding representatives of gondwanatheres on these three now widely separated landmasses suggests to us that they were connected in the Late Cretaceous. A recently proposed geophysical model shows that India and Madagascar were attached to eastern Antarctica well into the Cretaceous while South America was attached to the western end of Antarctica. This discovery supports that hypothesis with totally independent evidence derived from the fossil record."

Significantly, gondwanatheres have not been found in Africa, which lends credence to the research team's conclusion that Africa was relatively isolated during the 35 million years of the Late Cretaceous. "It's not just the mammal evidence that suggests that Africa was off doing its own thing; the dinosaur evidence also indicates a high degree of African endemism during this interval," adds Krause.

Krause has led large-scale NSF-funded paleontological expeditions to Madagascar for three years. Krause's team has discovered a spectacular array of well-preserved and extraordinarily complete skeletal material of crocodiles, birds, dinosaurs and other backboned animals in Madagascar. Despite finding only fragmentary remains of mammals, Krause notes that the mammal specimens "may not be all that spectacular visually, but they're extremely important. Scientific significance, just like beauty, is in the eye of the beholder."

-NSF-

Media Contacts
Cheryl L. Dybas, NSF, (703) 292-8070, cdybas@nsf.gov

Program Contacts
Christopher Maples, NSF, (703) 306-1551, cmaples@nsf.gov

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2014, its budget is $7.2 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives about 50,000 competitive requests for funding, and makes about 11,500 new funding awards. NSF also awards about $593 million in professional and service contracts yearly.

 Get News Updates by Email 

Useful NSF Web Sites:
NSF Home Page: http://www.nsf.gov
NSF News: http://www.nsf.gov/news/
For the News Media: http://www.nsf.gov/news/newsroom.jsp
Science and Engineering Statistics: http://www.nsf.gov/statistics/
Awards Searches: http://www.nsf.gov/awardsearch/

 

border=0/


Email this pagePrint this page
Back to Top of page