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Latest Animal anatomy Stories

b7a4c45777dbae1cbf79fe08a8514013
2011-05-06 06:00:00

The origin and evolution of treehopper 'helmets' has been traced by developmental biologists to show that they have achieved what no other insects have done in more than 300 million years; they have developed a third set of wings, which have been modified to form the helmet. Treehoppers are small, odd-shaped relatives of cicadas and are masters of disguise. They have outgrowths called helmets that could resemble anything from seeds to thorns to caterpillar poop and even ants. The extravagant...

6839a35892b392fd28e3872b472d54d81
2011-04-28 09:22:03

Male peacock tail plumage and courtship antics likely influence their success at attracting and mating with females, according to recent Queen's University research. Roz Dakin and Robert Montgomerie have found that natural variation in the number of eyespots on a peacock's tail does not impact a male's mating success. However, peacocks whose tails are clipped to considerably reduce the number of eyespots are less successful at mating. Female rejection of males with substantially fewer...

ac3d2f5d029828bd1a2373dbf3548cf91
2011-04-19 05:50:00

A reptile that lived 275 million years ago in present day Oklahoma is giving paleontologists a glimpse of the oldest known toothache, predating by 200 million years the previous record for the earliest known evidence of tooth decay in a terrestrial vertebrate. The researchers, led by Professor Robert Reisz, who chairs the Department of Biology at the University of Toronto Mississauga, found evidence of bone damage due to oral infection in Paleozoic reptiles as they adapted to living on...

2011-04-05 17:49:43

Beetle foot pads may inspire novel man-made adhesives The arrays of fine adhesive hairs or "Ëœsetae' on the foot pads of many insects, lizards and spiders give them the ability to climb almost any natural surface. Research by James Bullock and Walter Federle from the University of Cambridge in England found that the different forces required to peel away these adhesive hairs from surfaces are what allows beetles to adhere to diverse surfaces, thereby reducing the risk of...

c15e59192b374db4d34214417c8cd7871
2011-03-25 11:44:40

Scientists have uncovered the remains of an odd-looking saber-toothed vegetarian, a mammal that lived 260 million years ago in what is now Brazil, the Associated Press (AP) reports. Research published in Friday's edition of the journal Science claims that the dog-sized animal had upper canine teeth nearly 5 inches long. Such teeth are usually seen in predator animals to give them the ability to better capture and kill prey, not munch on leafy plants. On this animal, named Tiarajudens...

2011-03-21 13:00:36

Today, during the 89th General Session & Exhibition of the International Association for Dental Research, held in conjunction with the 40th Annual Meeting of the American Association for Dental Research and the 35th Annual Meeting of the Canadian Association for Dental Research, lead researcher C. Paganellii will present a poster titled "Influence of Pulp Extraction Technique on DPSCs Quality and Quantity." The objective of this study was to compare the quality and quantity of dental pulp...

a372fd5ab85c77e613cf15099f7ca53b1
2011-03-04 08:00:00

A well-established theory that horses evolved through natural selection has been verified with a groundbreaking study of fossil records by two anatomy professors at New York College of Osteopathic Medicine (NYCOM).Early ancestors of the modern horse likely ate fruit, the researchers noted Thursday, after studying horse teeth fossils dating back 55 million years. As land conditions evolved over time, the diets of horses became more mixed and their teeth became tougher allowing for chewing and...

2011-03-03 23:19:05

Fossil records verify a long-standing theory that horses evolved through natural selection, according to groundbreaking research by two anatomy professors at New York College of Osteopathic Medicine (NYCOM) of New York Institute of Technology. Working with colleagues from Massachusetts and Spain, Matthew Mihlbachler, Ph.D., and Nikos Solounias, Ph.D. arrived at the conclusion after examining the teeth of 6,500 fossil horses representing 222 different populations of more than 70 extinct horse...

2011-02-18 16:01:12

Using a method based on geographic positioning systems that allowed them to characterize the topography of the bats' molars in a way similar to how geographers characterize mountain surfaces, the researchers calculated a measure of dental complexity that reflects how "rugged" the surface of the tooth is. They illustrate a trend from relative simplicity of the shearing molars in insect eaters and omnivores to high complexity of the crushing molars in fruit eaters. Working with field-collected...

2011-01-10 15:07:49

Common genetic recipes pattern organs as different as shark gills and human hands A SCUBA expedition in Australia and New Zealand to find the rare embryos of an unusual shark cousin enabled American and British researchers to confirm new developmental similarities between fish and mammals. Elephant fish, a relative of sharks, utilize the same genetic process for forming skeletal gill covers that lizards and mammals use to form fingers and toes, researchers at the University of Chicago and the...


Latest Animal anatomy Reference Libraries

Atlantic Fire Ascidian, Pyrosoma atlanticum
2014-01-12 00:00:00

Pyrosoma atlanticum is a species of colonial tunicate found in temperate waters worldwide, usually between 50°N and 50°S. It is most plentiful at depths below 800 feet. It is found in colonies that are pelagic and move throughout the water column. In the evening the colony will move closer to the surface and descend back by dawn. Large colonies can rise and descend more than 2,500 feet in a single day. A colony of this species is cylindrical and can grow up to 2 feet long and 2.5 inches...

66_cd4d17d5233e06cef9f6342c33ac5c13
2009-10-16 17:56:55

Heterodontosaurus, meaning "different toothed lizard", is a genus of dinosaur from the Early Jurassic Period of what is now South Africa. The type species, H. tucki, was found in the Upper Elliot Formation of the Hettangian age (199 to 196 million years ago). Two species are known. This herbivorous dinosaur ate mostly plants despite having canines. It was a small ornithischian reaching a total length of 3 feet. It had a long, narrow pelvic bone which was like more advanced ornithischians....

42_be9d0558b2d26ba025fc2ee6fb5b097d
2007-10-24 12:34:20

The Giant Pangolin (Manis gigantea), is a species of pangolin. The Giant Pangolin inhabits Africa with a range stretching along the Equator from West Africa to Uganda. It is found mainly in savanna, rainforest, and forest, where there is a large termite population and available water. It does not inhabit high altitude areas. The Giant Pangolin is the largest species of pangolin (scaly anteaters). It belongs to the Manidae family. It was first described by Johann Karl Wilhelm Illiger in 1815....

41_b202465c7a50820c07c40126e8cabd2e
2007-03-19 15:27:17

The Southern Alligator Lizard, Elgaria multicarinata, is a lizard native to the Pacific coast of North America. It is common throughout Southern California and can be found in both grasslands and urban areas. Several subspecies can be distinguished, including the San Diego alligator lizard. It has a prehensile tail up to twice the length of its body. Like many lizards, however, it can drop its tail if attacked, possibly giving it a chance to flee; the tail will regenerate, but will never...

39_83f48105ed71d71662a9eaee4c6221f5
2007-03-19 14:41:22

The Triplewart seadevil, Cryptopsaras couesii, is a seadevil of the family Ceratiidae, found in all oceans, from the surface to 1.24 mi (2,000 m). Its length is approximately 11.81 in (30 cm). The Triplewart seadevil is one of the most abundant of the deepwater anglerfish. These fish have round flabby bodies with a soft fibrous skeleton and a scaleless prickly skin. Like most other deepwater anglerfishes this fish has small eyes, no pelvic fins and is colored black. It has a large...

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