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fossils in Medical News

Ancient fossils shed light on anatomical changes accompanying evolution of first land vertebrates

Durham, NC -- Cartoon depictions of the first animals to emerge from the ocean and walk on land often show a simple fish with feet, venturing from water to land. But according to Jennifer Clack, a paleontologist at the University of Cambridge who has studied the fossils of these extinct creatures ...

Biologists Question Animal Brain Size Theory

...elative to itself were influenced by more than just sociality within the species. "This is a sophisticated and powerful analysis that integrates fossils with extant species of carnivores," Flynn, dean of the Richard Gilder Graduate School at the American Museum of Natural History, said in a museum news...

Human Ancestors Put Best Foot Forward 1.5M Years Ago

... fossils thought to be oldest evidence to date of an essentially modern foot THURSDAY, Feb. 26 (HealthDay News) -- Anthropologists have uncovered a...

Fossils Push Back Bipedalism to 6 Million Years Ago

... the overall shape profile of the bone really closely resembles early human fossils from about three to two million years ago." Those fossils -- of hominins such as Australopithecus (such as the famous "Lucy"), and ...

Good luck indeed: 53 million-year-old rabbit's foot bones found

...cteristics to previously unreported Chinese rabbit fossils that date to the Middle Eocene epoch, about 48 mil...urements to see how they compared with the Chinese fossils as well as living rabbits and pikas. They found that although the Indian fossils resemble pikas in some primitive features, they lo...

ANSYS Sponsors Dinosaurs Exhibit at Carnegie Museum of Natural History

...re able to create something truly unique, educational and inspiring. Everyone at the museum is proud that this world-class collection of real dinosaur fossils is now presented to the public in the most accurate and most inspirational exhibit." Of the 19 free-standing dinosaur skeletons on exhibit in Dinosa...

Our Ancestors Possessed Much Smaller Brains Than It was Thought

...euxis and subjected it to micro CT scanning to calculate the approximate dimensions of the brain encased inside the cranium. Based on previous fossils collected at the same dig site in a quarry outside Cairo, scientists had hypothesized that this early monkey already would have had a relatively large...

Protein Folds Research Offers Insight into Metabolic Evolution

...they looked at proteins in more than 200 species) were also the most ancient. Protein architecture has preserved ancient structural designs as fossils of ancient biochemistries, the authors wrote. The team used data from two international collections of genetic and proteomic information: the ...

Study Focus on Environmental Hazards Posed by IT Scraps

...functions," recommends Mona Finder from Dena. This might turn the monitor off when the computer is not in use, for example. Animated screen savers are fossils from an earlier age of computing, she notes. "They just tend to use up energy, and they don't even save the screen." It's difficult to put a fir...

Ladakh was a Coastal Region Millions of Years Ago

...ts scouring the icy heights of Jammu and Kashmir came across a set of plant fossils near Tsokar in the Eastern Ladakh region and say it is proof of the existence of a coastal environment in the region. "The fossils belong to the middle-late Eocene period, anywhere between 45-33 million yea...
fossils in Biological News

Dinosaur fossils fit perfectly into the evolutionary tree of life

A recent study by researchers at the University of Bath and London's Natural History Museum has found that scientists' knowledge of the evolution of dinosaurs is remarkably complete. Evolutionary biologists use two ways to study the evolution of prehistoric plants and animals: firstly they use...

'Hobbit' fossils represent a new species, concludes University of Minnesota anthropologist

University of Minnesota anthropology professor Kieran McNulty (along with colleague Karen Baab of Stony Brook University in New York) has made an important contribution toward solving one of the greatest paleoanthropological mysteries in recent history -- that fossilized skeletons resembling a myt...

Rare Antarctic fossils reveal extinction of tundra before full polar climate arrived

(Boston) An international research team in Antarctica led by David Marchant, an associate professor of earth sciences at Boston University, has reported the discovery of exceptionally well-preserved freshwater fossils including mosses, microscopic one-celled algae, known as diatoms, small fresh wa...

Antarctic fossils paint a picture of a much warmer continent

National Science Foundation-funded scientists working in an ice-free region of Antarctica have discovered the last traces of tundra--in the form of fossilized plants and insects--on the interior of the southernmost continent before temperatures began a relentless drop millions of years ago. An ...

Living fossils have long- and short-term memory

Nautiloids are the sole surviving family of externally-shelled cephalopods that thrived in the tropical oceans 450150 million years ago. However, in the intervening years their modern soft bodied relatives dumped the shell and developed complex central nervous systems; which makes Nautilus ideally...

Oldest Australian crayfish fossils provide missing evolutionary link

Crayfish body fossils and burrows discovered in Victoria, Australia, have provided the first physical evidence that crayfish existed on the continent as far back as the Mesozoic Era, says Emory University paleontologist Anthony Martin, who headed up a study on the finds. "Studying the fossil bu...

Rodent fossils allows to determine climate of the Iberian Peninsula 6 million years ago

This release is available in Spanish . How did the rodents which inhabited the south of the Iberian Peninsula live six million years ago" The researcher of the UGR Raef Minwer-Barakat has attempted to answer this question through his doctoral thesis "Rodents and insectivorous of Upper T...

Living fossils have hot sex

University of Utah scientists discovered a strange method of reproduction in primitive plants named cycads: The plants heat up and emit a toxic odor to drive pollen-covered insects out of male cycad cones, and then use a milder odor to draw the bugs into female cones so the plants are pollinated....

Google Earth aids discovery of early African mammal fossils

ANN ARBOR, Mich.---A limestone countertop, a practiced eye and Google Earth all played roles in the discovery of a trove of fossils that may shed light on the origins of African wildlife. The circuitous and serendipitous story, featuring University of Michigan paleontologists Philip Gingerich, ...

Oldest animal fossils may have been bacteria

The oldest-known animal eggs and embryos, whose first pictures made the cover of Nature in 1998, were so small they looked like bugs ?which, it now appears, they may have been. This week, a study in the same prestigious journal presents evidence for reinterpreting the 600 million-year-old fossils...

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fossils in Biological Technology

Evidence of Ancient Hot Springs on Mars Detailed in Astrobiology Journal

...ed the hot springs over a wide range of spatial scales. The potential to find key evidence indicative of life--biofabrics, microbial remains, chemical fossils in minerals--is high when sedimentary deposits form from hydrothermal fluids. Hot spring fluids are typically laden with dissolved mineral ions that,...
fossils in Biological Definition

Biology

...es conducted within molecular biology or genomics , and comparisons of fossils or other records of ancient organisms in paleontology . Biologists organi...stions in evolution. It also generally includes paleontologists who use fossils to answer questions about the mode and tempo of evolution, as well as theo...

Charles Darwin

...ork during the Beagle expedition let him study at first hand geology, fossils and a multitude of living organisms as well as meeting native peoples. He ...e was ' seeing' land-forms as if he had the eyes of Lyell . He discovered fossils of gigantic extinct South American Megatheriums and Armadillos in strat...

Evolution

...the course of time. Morphological evidence fossils are important for estimating when various lineage...isms has been found all over the Earth. The age of fossils can often be deduced from the geologic context in ...ge can be verified with radiometric dating . Some fossils bear a resemblance to organisms alive today, while...

Eukaryote

...and complex single-celled organisms. Eukaryotes are generally held to have originated around 2 billion years ago, but this has been disputed. Early fossils such as acritarchs are difficult to interpret. Forms that can be related to modern groups start appearing around 800 million years ago, and most fo...

Evolutionary biology

...y , or herpetology but use those organisms as systems to answer general questions in evolution. It also generally includes paleontogists who use fossils to answer questions about the mode and tempo of evolution, as well as theoreticians in areas such as population genetics and evolutionary theory. ...

Paleontology

...erved in rocks . This includes the study of body fossils , tracks, burrows, cast off parts, fossilized fec...nes, or in vertebrate paleontology , dealing with fossils of animals with backbones, including fossil homini...omic importance of paleontology lies in the use of fossils to determine the age and nature of the rocks that ...

Plant

...e and Fungi 3 Importance 4 Growth 5 fossils 6 References and further reading 7 See a...ortive tissue, may grow up to 12500 μm/h. fossils Plant fossils include roots, wood, leaves, seeds, fruit, polle...

Plant

...e and Fungi 3 Importance 4 Growth 5 fossils 6 References and further reading 7 See a...ortive tissue, may grow up to 12500 μm/h. fossils Plant fossils include roots, wood, leaves, seeds, fruit, polle...

Unsolved problems in biology

...d evolution static? Is hominid devolution possible? Are there Human- Neandertal hybrids? What explain the differences between Human and Neanderthal fossils ? Viking 's methane. The Viking lander detected emissions of carbon-14-containing methane, which indicates the possible presence of life on Mars. ...

Zoology

...nd describers of zoological collections, (2) early explorers and modern naturalist travellers and writers on zoo-geography, and (3) collectors of fossils and palaeontologists are the chief varieties of zoological workers coming under this heading. Gradually, since the time of Hunter and Cuvier , ...
fossils in Biological Dictionary

Plant

...l) be merged into this article or section. ... As the broadest plant clade, this comprises most of the eukaryotes that eons ago ... Plant fossils include roots, wood, leaves, seeds, fruit, pollen, spores, ... Includes an encyclopedia of flowers and plants indexed by botanical and common nam...

Paleontology

...l, University of California at Berkeley ... Home page for paleontology at the U.S. Geological Survey ... Paleontology , the science which uses fossils to study life in past geologic time, ... Paleontology summary with 14 pages of encyclopedia entries, essays, summaries, research information, and...

Herbivores

... The most important terrestrial herbivores in the Early Permian were the insects. ... Evidence for these new herbivores is seen in Permian plant fossils with new ... Poison ivy produces urushiol to protect the plant from herbivores . ... There are four basic strategies plants use to reduce damage...

Fossil

... fossils are the preserved remains or traces of animals, pl... Promotions at CouponMountain.com Galleries of fossils organized by location and scientific taxonomy. ... dealers. Offers rare, exotic, and museum quality fossils . If you don't see your state in this list, cli...

Deuterostome

... fossils of one major deuterostome group, the echinoderms (whose ... Deuterostome phylogeny reveals monophyletic chordates and the new phylum X...

Common descent

...ence of evolution and provides a wealth of information on the natural processes by which the variety of life on Earth developed. This... 1.1 Do fossils validate common descent ? 1.2 Transitional forms. 2 RNA / DNA code ... Creationists reject common descent as it implies an evolutionary model...

Angiosperm

...t produce flowers. ... The origin and evolution of angiosperms has been under considerable dispute. ... There is an abundance of angiosperm fossils that have been found at this ... The flowering plants or angiosperms are the most speciose group of land plants. ... The botanical term " Angiosp...
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