Quantcast

Latest Mammal Stories

science-082511-001
2011-08-25 11:05:58

  A well-preserved fossil discovered in China provides new evidence that the split between placental mammals and marsupials may have occurred 35 million years earlier than previously believed, according to a new study published Wednesday in the journal Nature. The scientists, led by Carnegie Museum of Natural History paleontologist Zhe-Xi Luo, said the discovery fills an important gap in the fossil record, and helps to calibrate modern, DNA-based methods of dating evolution. The...

2011-08-16 15:20:06

From hot pink to traditional French and Lady Gaga's sophisticated designs, manicured nails have become the grammar of fashion. But they are not just pretty "” when nails appeared on all fingers and toes in modern primates about 55 million years ago, they led to the development of critical functions, including finger pads that allow for sensitive touch and the ability to grasp, whether it's a nail polish brush or remover to prepare for the next trend. In a new study co-authored by...

b77eb1e47b6e06bf9a0e48a20a8d204c
2011-08-16 12:20:00

A study using hidden motion-sensor cameras has revealed mammals' lives around some of the world's most remote forests. The researchers sought to collect data on mammals living in seven different forests locations. Dr Jorge Ahumada of the Tropical Ecology Assessment and Monitoring Network (TEAM) at Conservational International and colleagues captured over 50,000 images of 105 species that ranged from three-ton elephants to a 26-gram Linnaeu's Mouse Opposum. Protected regions in Uganda,...

2011-07-28 12:50:53

Gripping tightly to a tree trunk, at first sight a colugo might be mistaken for a lemur. However, when this animal leaps it launches into a graceful glide, spreading wide the enormous membrane that spans its legs and tail to cover distances of up to 150m. So, when Greg Byrnes and his colleague Andrew Spence from the University of California, Berkeley, USA, were looking around for a mammal to carry the accelerometer/radio transmitter backpacks that the duo designed to track animals in the...

a03fa4c3e87d4709268156bfc0ac756e
2011-07-20 11:52:01

Zoologists of the University of Jena find out how sloths perfected energy saving They live their lives upside down; instead of defying the force of gravity in an upright position, sloths spend most of their lives hanging in trees upside down. If they have to move, they do so only slowly. Very slowly. But why are sloths so "˜lazy"˜? And how has the locomotive system of these outsiders adapted to their unhurried lifestyle in the course of evolution? Zoologists of the...

582b412d111dcaf076f78eb05d8539fd
2011-06-28 08:12:55

New research from Brown University shows that fish and mammals chew differently. Fish use tongue muscles to thrust food backward, while mammals use tongue muscles to position food for grinding. The evolutionary divergence is believed to have occurred with amphibians, though further research is needed to identify which species and when. Results are published in Integrative and Comparative Biology. Evolution has made its marks "” large and small "” in innumerable patterns of life....

9b51bc241880ef0ba91ab6d18062729c
2011-06-24 11:40:00

Scientists have found a way to take the temperature of dinosaurs that have been extinct for millions of years. But since you cannot take their temperature like you do with humans, the researchers did the next best thing -- study dinosaur teeth, which can reflect body temperature. What they found is surprising. Studying the teeth of the long-necked Brachiosaurus, they discovered it had a temperature of about 100.8 degrees F and the smaller Camarasaurus had a temp of 98.3 degrees. Humans...

2073299f5dfb36499638d3cfe53f6b4d
2011-05-24 14:10:00

By Margaret Allen, Southern Methodist University Birch mouse is now 9 million years older than previously known and migrated from Asia to North America Tiny fossil teeth discovered in Inner Mongolia are a new species of birch mouse, indicating that ancestors of the small rodent are much older than previously reported, according to paleontologist Yuri Kimura, Southern Methodist University in Dallas. Fossils of the new species were discovered in sediments that are 17 million years old, said...

c6c99709ac6aad38a3cdda1152b3623e
2011-05-19 14:40:00

Paleontologists have discovered that an improved sense of smell jumpstarted brain evolution in the ancestral cousins of present-day mammals.  The findings help explain why mammals evolved such large and complex brains, which in some cases ballooned 10 times larger than relative body size.  The researchers constructed fossils of two Early Jurassic Period mammals to provide evidence that the mammalian brain evolved in three major stages.  First by improvements in sense of smell...

0dd19548c1288b724f97e5ac94f22798
2011-05-15 09:43:23

More than 200 million years ago, mammals and reptiles lived in their own separate worlds on the supercontinent Pangaea, despite little geographical incentive to do so. Mammals lived in areas of twice-yearly seasonal rainfall; reptiles stayed in areas where rains came just once a year. Mammals lose more water when they excrete, and thus need water-rich environments to survive. Results are published in the Proceedings of the National Academy of Sciences.Aggregating nearly the entire landmass of...


Latest Mammal Reference Libraries

Echidna, Tachyglossidae
2014-06-19 07:53:10

Tachyglossidae is a family that holds eight species of echidnas, also known as spiny anteaters, four of which are known only from fossils. The remaining four species, which include the platypus, can only be found in New Guinea and Australia. They prefer to reside in wooded areas and can be found under piles of vegetation, roots, and occasionally inside the burrows of other animals. This family is named after the "Mother of All Monsters" in Greek mythology, although the two do not resemble...

42_e96da6f440fbe9416f53bf5be8b5f8e3
2007-06-25 07:54:33

The Aardvark, Orycteropus afer, sometimes called the "˜antbear', is a medium-sized mammal native to Africa. It lives south of the Sahara desert where there is suitable habitat for them to live. It prefers savannas, grasslands, woodlands and bush. They are not found in deserts but are found in areas where there is a good supply of ants and termites. The most distinctive characteristic of the Aardvark is their teeth. Instead of having a pulp cavity, they have a number of thin tubes of...

42_767deb25d6255da2c5d97b07d1e38516
2007-01-19 11:46:11

The European Mole, Talpa europaea, is a mammal of the order Soricomorpha. This mole lives in an underground tunnel system, which it constantly extends. It uses these tunnels to hunt its prey. Under normal conditions the displaced earth is pushed to the surface, resulting in the characteristic "mole hills". It has a cylindrical body and is around 5 1/4 inches (12 cm) long. Females are typically smaller than males. The eyes are small, and hidden behind fur. Its ear is just a small ridge...

42_f294be1ec1fa65e8319af46dc77bf24b
2006-12-12 11:27:08

The platypus is a semi-aquatic endemic to eastern Australia and Tasmania. Together with the four species of echidna, it is one of the five species of monotremes, the only mammals that lay eggs instead of giving birth to live young. It is the sole living representative of its family and genus, though a number of related species have been found in the fossil record. The unique appearance of this egg-laying, duck-billed mammal baffled naturalists when it was first discovered, with some...

More Articles (4 articles) »
Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
Related