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Field Museum provides gold standard for mammal survey
Date:10/6/2008

awrence Heaney, a Field mammal curator and co-author of the study. "Our records are based on research collections that are permanent and are constantly updated."

Scientists Discover and Describe New Species

Besides information about mammals gathered over the 115 years that the Field Museum's collection has existed, scientists have access to specimens that can provide genetic material and anatomic information to help clarify whether animals are members of different species, are part of a subspecies, or fall into some other category.

In the current mammal update from the IUCN, such questions loomed often as scientists raised the number of recognized species by nearly 20 percent over what it had been just 14 years ago. This included 349 newly described species and 512 others that saw their status elevated to full-fledged species from some lesser category.

An example is the clouded leopard in Southeastern Asia, which was recently split into two separate species, with one living on the Southeast Asian continent and another native to the island of Borneo.

"Scientists are discovering 25 new mammal species a year," said Bruce Patterson, a Field mammal curator and also a study co-author. "We're still describing them. These aren't beetles or flies. They are our fellow vertebrates living on this planet. And we don't know them all."

Storing thousands of samples in its collection, the Field can provide scientists access to specimen that may be difficult to find or even extinct for analysis with the latest technology. Analysis of DNA is now possible for animals that lived and died before scientists even knew that DNA existed.

"We also can do isotopic analysis and study anatomy using a scanning electron microscope," said Heaney, again applying techniques that were unknown at the time when the collection samples were taken.

Although many mammal species are endangered, the Field Museum's Patterson found at
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Contact: Nancy O'Shea
noshea@fieldmuseum.org
312-665-7103
Field Museum
Source:Eurekalert

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