Kangaroo teeth grow forever—and keep a record of their owner's age and sex
How do you find out the age of a wild animal? For some Australian marsupials, we have discovered you can tell from their teeth.
How do you find out the age of a wild animal? For some Australian marsupials, we have discovered you can tell from their teeth.
Plants & Animals
Jun 22, 2024
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Around 100 million years ago, a remarkable evolutionary shift allowed placental mammals to diversify and conquer many cold regions of our planet. New research from Stockholm University shows that the typical mammalian heater ...
Plants & Animals
Jun 6, 2024
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Sometimes, science requires traveling into hazardous environments; sometimes it requires a vast influx of state capital and an army of researchers and technicians. But sometimes, science has to call in the Marines. We reported ...
Australia lacks fearsome large carnivores like lions and wolves, and the relative lack of fear that marsupials like kangaroos and wallabies show to dogs (and other introduced carnivores) has been attributed to a lack of evolutionary ...
Plants & Animals
May 22, 2024
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People say "When pigs fly" to describe the impossible. But even if most mammals are landlubbers, the ability to glide or fly has evolved again and again during mammalian evolution, in species ranging from bats to flying squirrels. ...
Evolution
Apr 24, 2024
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I thought convincing my husband of the merits of my returning to study just as he had retired would be a very tricky sell. So his enthusiasm for the idea caught me by surprise.
Ecology
Dec 29, 2023
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Recent paleontological explorations in the Tatacoa Desert in Colombia led to the recovery of the most complete skeleton of a "saber-toothed marsupial" discovered in northern South America. The specimen belongs to the species ...
Paleontology & Fossils
Oct 12, 2023
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A small team of evolutionary biologists at Flinders University, in Australia, working with one colleague from the University of Salford in the U.K. and another from the University of California, Los Angeles, has found fossilized ...
You're a mammal. So is a kangaroo. We've got much in common. But one of the most interesting is we all feed our newborns with milk. The word mammal comes from mamma, which is Latin for breast.
Plants & Animals
Jun 21, 2023
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Mammal evolution has been flipped on its head, according to new research that suggests marsupials are the more evolved mammals.
Plants & Animals
May 22, 2023
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Marsupials are an infraclass of mammals, characterized by giving birth to relatively undeveloped young. Close to 70% of the 334 extant species occur in Australia, New Guinea, and nearby islands, with the remaining 100 found in the Americas, primarily in South America, but with thirteen in Central America, and one in North America, north of Mexico.
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