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| Extinct, Dinosaur Diorama |
Viewed: 3158 times
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| Extinct, Seacow (Dugong) |
Viewed: 2179 times
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| Asteroid Catastrophe or Interplanetary Seeding? |
Viewed: 2180 times
01/14/09 |
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| Martinique Lizard (Leiocephalus herminieri), extinct |
Viewed: 2270 times
01/14/09 |
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| Extinct, Mammoth |
Viewed: 1867 times
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| Extinct, Giant Sloth |
Viewed: 1967 times
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| Extinct, Ivory Billed Woodpecker |
Viewed: 2129 times
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| Endangered, Rhino |
Viewed: 1851 times
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| Extinct, Dodo |
Viewed: 1927 times
01/14/09 |
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| Ornithomimus or bird-like dinosaur, extinct |
Viewed: 1706 times
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| Round Island Boa (Bolyeria Multocarinata), extinct |
Viewed: 1816 times
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| Brachiosaurus, extinct |
Viewed: 1707 times
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| Tyrannosaurus, extinct |
Viewed: 1565 times
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| Carolina parakeet (Conuropsis carolinesis), extinct |
Viewed: 1803 times
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| Extinct, Pink-headed ducks |
Viewed: 1484 times
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| Extinct, Passenger Pigeon |
Viewed: 1363 times
01/14/09 |
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| Akialoa, extinct |
Viewed: 1668 times
01/14/09 |
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| Threatened, Jaguar, Jungle habitats |
Viewed: 1460 times
01/14/09 |
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| Quagga (Equus Quagga), extinct |
Viewed: 1600 times
01/14/09 |
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| Japanese Wolf (Canis Lupus Hodophilax), extinct |
Viewed: 1666 times
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| Extinct, Pacific Island Grosbeak |
Viewed: 1637 times
01/14/09 |
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Viewed: 1352 times
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Viewed: 1318 times
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Viewed: 1328 times
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Viewed: 1431 times
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Viewed: 1354 times
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| Spiny acritarchs preserved in Doushantuo cherts |
Viewed: 1780 times
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| spiny-acritarchs1 |
Viewed: 1557 times
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| DoushantuoBranchingTubes |
Viewed: 1523 times
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An artist's reconstruction shows a curled-up dinosaur embryo inside an egg. The actual egg is a little more than 2 inches (6 centimeters) in length. Image: Kevin Dupuis, University of Toronto at Mississauga
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Viewed: 1754 times
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Adult Massospondylus and embryo, Image: Robert Reisz, University of Toronto at Mississauga
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Viewed: 2063 times
01/14/09 |
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Cyanobacteria Bloom in Lake Ponchartrain, LA, an oligohaline estuary
Credit: View |
Viewed: 1617 times
01/14/09 |
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| Warrior anemones reach over from several rows behind the front to attack animals from a neighboring colony. (Rick Grosberg/UC Davis photo) |
Viewed: 1605 times
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This picture shows how DNA bases are stacked together along the double helix. The atoms of the sugar-phosphate backbone are shown in gray, and the ultraviolet-absorbing portions of DNA -- the bases -- are shown in blue or magenta, depending on which side of the DNA strand they are located. Image courtesy of Bern Kohler, Ohio State University.
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Viewed: 1918 times
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This graph shows how quickly ultraviolet (UV) energy deposited in the electrons of a nucleoside is converted to heat, which is then absorbed by water surrounding the nucleoside. Here, time is measured in femtoseconds, or quadrillions of a second. The diagram to the upper right of the image depicts a particular nucleoside -- adenosine. This molecule consists of a UV-absorbing base (shown in red) and a simple sugar (shown in gray) that binds it to the RNA backbone. This base is also found in DNA. Credit: Ohio State University
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| Radiocarbon peaks in Icelandic marine sediment samples, indicated by the black line, coincide with three supernova-caused events that Firestone and Wells believe led to the extinction of the mammoth. Credit: Berkeley Lab |
Viewed: 1563 times
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Mammoths
Credit: USGS |
Viewed: 1610 times
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Female Leah Using a Walking Stick while Crossing Bipedally through an Elephant Pool at Mbeli Bai.
Credit: PLoS |
Viewed: 1698 times
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Female Efi Using Trunk as a Stabilizer during Food Processing at Mbeli Bai
The top photo shows the intact trunk shortly before Efi manipulated it. The trunk was then detached by female Efi with both hands, pushed into the ground, and used as a stabilizing stick while dredging aquatic herbs towards her with her other hand. From: PLoS Biol 3(11): e380
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Female Leah Using a Walking Stick while Crossing Bipedally through an Elephant Pool at Mbeli Bai
Female Leah first looked at the new elephant pool and the branch she later used as the walking stick, and entered the water without the tool (not shown). After re-entering the pool and taking the branch with her right hand, she walked bipedally 8–“10 m into the water, frequently testing water deepness.
From: PLoS Biol 3(11): e380
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Viewed: 1811 times
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Photo of reconstructed skeleton of Buitreraptor gonzalezorum. The long hindlimbs indicate that the animal was a fast runner. The elongated arms and massive shoulder girdle indicate powerful prey-grasping abilities. Like all other dromaeosaurs, Buitreraptor was armed with an enlarged claw on the second toe of each foot.
© 2005 The Field Museum, Photo by John Weinstein, image# GEO86430_30d
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Viewed: 1818 times
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The skeleton of Buitreraptor gonzalezorum in the field. A string of vertebrae and the right shoulder (lower left) and femur are showing. The match-stick shows scale.
Photo by Peter Makovicky, Courtesy of The Field Museum
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Viewed: 1778 times
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The Buitreraptor gonzalezorum quarry. The holotype specimen was extracted in an 800-pound block of sandstone that took 10 days to extract using a rock-saw and chisels. The picture shows Field Museum preparator Jim Holstein (left) and Argentine paleontologist Pablo Gallina at work. Temperatures soared above 100? F on most days. Fieldwork was supported by NASA, The Jurassic Foundation, and Michael and Jacqueline Ferro of Chicago.
Photo by Peter Makovicky, Courtesy of The Field Museum
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Viewed: 1864 times
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| Dinosaur Landscape |
Viewed: 1383 times
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Skeleton of Microraptor gui, a feathered dinosaur from the early Cretaceous (about 125 million years old) of China has preserved traces of feathers in the wings and legs, suggesting a biplane configuration. The animal was about 30 inches long with a bony tail and weighed about 2 pounds (courtesy: Dr. Xing Xu)
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| A biplane glider Microraptor gui from China compared with the Wright 1903 Flyer. Microraptor invented the biplane 125 million years ago (courtesy: Jeff Martz). |
Viewed: 1609 times
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Fruit fly Drosophila melanogaster
Credit: UCSD
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Viewed: 1490 times
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Bonnet macques, India
Credit: Illinois St. University, Mary H. Lee |
Viewed: 1537 times
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| Bumblebee solving a complex color puzzle. Credit: University College London |
Viewed: 1505 times
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| Credit: NASA |
Viewed: 1417 times
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