Dung happens and helps scientists
...ta allow him to determine when and how an animal evolved and became extinct.
The collection includes dung from modern animals to prehistoric ground sloths
and 40,000-year-old mammoths.
Molecular biologists in Denmark, Australia and Canada are using pieces from NAU's dung collection to compare its DNA ...
Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers
...ups have since either died out completely, such as Andrewsarchus (an aggressive wolf-like cow), or declined in diversity, such as the group containing sloths
The researchers believe that our 'ancestors', and those of all other mammals on earth now, began to radiate around the time of a...
Study shows big game hunters, not climate change, killed off sloths
... likely culprits in the extinction of giant ground sloths
and other North American great mammals such as mam... Age was responsible for the demise of prehistoric sloths
has puzzled scientists because both events occurre...eagues found the last record of West Indian ground sloths
coincided with the arrival of humans 4,400 years a...
Ancient DNA confirms single origin of Malagasy primates
... DNA from nine subfossil individuals in two of the more bizarre extinct species, Palaeopropithecus and Megaladapis. The first has been likened to tree sloths
and the second compared to koala bears. Both ranged in body weights from 100 to 150 pounds, as compared to the largest living lemur, Indri indri, whic...
Oxygen increase caused mammals to triumph, researchers say
...e more oxygen, the bigger the mammals. We argue that the rise in oxygen content allowed mammals to become very, very large - mammals like 12-foot-tall sloths
and huge saber-toothed cats. They paved the way for all subsequent large mammals, including ourselves."
The results described in Falkowski's articl...
First electrophysical recording of sleep in a wild animal
...rophysiology of sleep in a wild animal, three-toed sloths
carrying miniature electroencephalogram recorders slept 9.63 hours per day6 hours less than captive sloths
did, reports an international team of researchers ...next three to five days. The activity of two other sloths
was monitored via radio-telemetry collar alone, fo...