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Primitive in Biological News

Our 'caveman logic' embraces ESP over evolution

... matter. In CAVEMAN LOGIC: THE PERSISTENCE OF primitive THINKING IN A MODERN WORLD (Prometheus Books, ... Davis says CAVEMAN LOGIC: THE PERSISTENCE OF primitive THINKING IN A MODERN WORLD is the product of more ... brain circuitry." He asserts that much of this primitive thinking is supported by modern social ...

Researchers uncover world's oldest fossil impression of a flying insect

... world's oldest known full-body impression of a primitive flying insect, a 300 million-year-old specimen ... of work is remains of insect wings. Bodies of primitive flying insects are rarely preserved and therefore ... and body plan are consistent with those of primitive flying insects. He also points out that "there ...

Trichoplax genome sequenced -- 'rosetta stone' for understanding evolution

... sequence of Trichoplax , one of nature's most primitive multicellular organisms, providing a new insight ... genes, introns and spacer sequences like the most primitive organisms. However, size is not all that ... defined regulatory sequences that link these most primitive ancestors to higher animal species. The ...

New fossil tells twisted tale of how flatfishes ended up with two eyes on one side of head

... Friedman discovered that both represent primitive flatfishes with a somewhat asymmetrical skull. ... but the specimens also show characters more primitive than those found in any living form. Adding ... It also indicates that that mixed 'handedness' is primitive for flatfishes. "There is a broad implication ...

Meteorites a rich source for primordial soup

... thought to contain the oldest and the most primitive organic materials found in meteorites. CR ... other two meteorites had the highest ever seen in primitive meteorites180 and 249 ppm (parts per million). Other primitive meteorites that have been studied generally have ...

Massive dinosaur discovered in Antarctica sheds light on life, distribution of sauropodomorphs

... in Antarctica. The massive plant-eating primitive sauropodomorph is called Glacialisaurus hammeri ... are important because they help to establish that primitive sauropodomorph dinosaurs were more broadly ... discovery of Glacialisaurus hammeri shows that primitive sauropodomorphs probably coexisted with true ...

How did chemical constituents essential to life arise on primitive Earth?

... forms. These processes might have taken place on primitive earth, but how they occur is an unsolved puzzle. ... have formed from smaller molecules present on primitive Earth, either very slowly over millions of years ... other essential compounds form under simulated primitive Earth conditions, the authors write in their ...

Old developmental pathways spawn revolutionary evolutionary changes

... TEMPE, Ariz. When the larvae of the primitive social insect Polistes metricus, a paper wasp, ... from solitary ancestors through study of a primitive social order of wasps. In a paper highlighted on ... larval life. However, Amdam points out that the primitive social Polistes wasp was originally believed to ...

Explosive growth of life on Earth fueled by early greening of planet

... It was a massive greening of the planet by non-vascular plants, or primitive ground huggers, as Knauth calls them. This period, roughly 700 million ... catastrophes, they began to see a world that first greened up with primitive plants. "The greening of Earth made soils which sequestered carbon and ...

Fossils suggest earlier land-water transition of tetrapod

... in what is now Greenland. Acanthostega was thought to have been the most primitive tetrapod, that is, the first vertebrate animal to possess limbs with ... think even the adults were aquatic." "If Ichthyostega is actually more primitive than Acanthostega, then maybe animals evolved towards a terrestrial ...

Artificial cells, simple model for complex structure

... could test this idea and learn how large an effect is possible." These primitive cells also model macromolecular crowding of cytoplasm, which happens ... and nucleic acid structures and function." These polymer containing primitive artificial cells may offer a very simple experimental system for ...

Early whales gave birth on land

... whales--a pregnant female and a male of the same species--reveal how primitive whales gave birth and provide new insights into how whales made the ... land only to rest, mate and give birth, said Gingerich. Like other primitive archaeocetes, Maiacetus had four legs modified for foot-powered swimming, ...

Early whales gave birth on land, fossil find reveals

... whales---a pregnant female and a male of the same species--reveal how primitive whales gave birth and provide new insights into how whales made the ... of Paleontology and director of the U-M Museum of Paleontology. Like other primitive archaeocetes, Maiacetus had four legs modified for foot-powered swimming, ...

Genome of simplest animal reveals ancient lineage, confounding array of complex capabilities

... U.S. Department of Energy Joint Genome Institute (DOE JGI), a simple and primitive animal, Trichoplax adhaerens, appears to harbor a far more complex suite ... 600 million years ago," said Srivastava. "It has retained a lot of primitive features relative to other living animals." Originally collected from ...

Key found to moonlight romance

... occur in corals, insects, fish and mammals - including humans - and are primitive light-sensing pigment mechanisms which predate the evolution of eyes. In ... corals during full moon nights. We think these genes developed in primitive life forms in the Precambrian, more than 500 million years ago, as a way ...

New 150 million-year-old crab species discovered

... University and the University of Bucharest, Romania, have discovered a new primitive crab species Cycloprosopon dobrogea in eastern Romania. Previously ... more than 150 million years ago during the Jurassic period. Studying primitive and extant crabs helps determine various aspects of biodiversity and ...

New dinosaur species found in Montana

... Horner said. Tests, however, showed that it represents a very primitive species that shares characteristics of Neo-ceratopsian dinosaurs in North ... have horns, but these do not. Horner said he was looking at even more primitive dinosaurs on his recent trip to Mongolia. His team collected more than 80 ...

Carnegie donates landmark clones to biology

... the presence of ammonium. The researchers were totally surprised that the mechanism in which three subunits regulate each other was found in the primitive archaebacteria. It means that it evolved billions of years ago. The fact that the C-terminus is found in all other bacteria, fungi, and plants ...

Landmark project to map genomics of complex ant systems

... bacteria and fungi associated with the gardens of these ants. She selected two highly sophisticated ant species for sequencing, and one ancient, more primitive species. Entering new territory Roche will sequence the DNA using its proprietary high-throughput genome sequencing technology, which will ...

Beaked, bird-like dinosaur tells story of finger evolution

... interpretation that they were the first, second and third. Limusaurus is the first ceratosaur known from East Asia and one of the most primitive members of the group. Ceratosaurs are a diverse group of theropods that often bear crests or horns on their heads, and many have unusual, knobby ...

University of Leicester geologists demonstrate extent of ancient ice age

... time (part of the Early Palaeozoic Era), an interval that witnessed a major diversification of early marine animals including trilobites and primitive fish as well as the emergence of the first land plants. The Early Palaeozoic climate had long been considered characterised by essentially ...

Work of Field Museum scientist addresses question of chance in evolution

... bryozoans, marine animal colonies whose bodies are made up of many genetically identical box-like individuals (zooids). In the simplest, most primitive cheilostomes, the soft feeding organ is squeezed out of the box by muscles pulling on a flexible membrane. The next step in diversification was ...

Wildlife Conservation Society supports world's first study of egg-laying mammal

... movement patterns, and home-range sizes for the species. The long-beaked echidna is found only in New Guinea and is a member of the monotremes, a primitive order of mammals that forced zoologists to change their very definitions of what a mammal is. Unlike all other mammals, monotremes like the echidna ...

Spring agricultural fires have large impact on melting Arctic

... the result of excess accumulation of carbon dioxide, the Arctic is highly sensitive to short-lived pollutants. Forest fires, agricultural burning, primitive cookstoves, and diesel fuel are the primary sources of black carbon; oil and gas activities and landfills are major sources of methane. During the ...

Plant Min protein sits tight and rescues E. coli

... known as DivIVA, tethers MinCD to cell poles, preventing division at the cell ends. Chloroplasts originated from cyanobacteria that colonised primitive plant cells, and the conservation of MinD, MinE and FtsZ genes in plants was already an indication of some conservation of function. Nonetheless it ...

University of Florida study provides insight into evolution of first flowers

... terms of its genetic wiring. Douglas Soltis, chairman of the UF botany department, emphasized that the study highlights the importance of studying primitive flowering plants such as the avocado to gain insight into the early history of the flower. Survivors of ancient lineages represent a crucial link to ...

The evolutionary foundation of genomic imprinting in lower vertebrates

... its paternal methylation imprints during embryogenesis. These results suggested that the parent-specific methylation of goldfish Igf2 DMR might be a primitive genomic imprinting in the early period of vertebrate evolution. The investigation "provided the first molecular evidence that the evolutionary ...

Diuscovery in amber reveals ancient biology of termites

... and the termite would starve if it didn't have the protozoa to aid in digestion. In this case they depend on each other for survival." Even more primitive termites may have fed on a range of things they could digest themselves, Poinar said, but eventually they acquired protozoa that dramatically ...

Building the lymphatic drainage system

... have now found that the factor specifically regulates a late stage of lymph development when large, valve-containing vessels arise from more primitive capillaries. The study will be published online April 27 ( www.jcb.org ) and will appear in the May 4 print issue of the Journal of Cell Biology . ...

Field Museum paleontologist leads study on two new dinosaurs from China

... Other dinosaurs found together with Beishanlong and Xiongguanlong include the beaked and probably herbivorous therizinosauroid theropod Suzhousaurus, primitive relatives of duck-billed dinosaurs, the small horned dinosaur Auroraceratops, and both small and large sickle-clawed theropods. Most of the famous ...

Cretaceous octopus with ink and suckers -- the world's least likely fossils?

... years old, yet one of the fossils is almost indistinguishable from living species." This provides important evolutionary information. "The more primitive relatives of octopuses had fleshy fins along their bodies. The new fossils are so well preserved that they show, like living octopus, that they ...

Elephant shark genome sequence leads to discovery of color perception in deep-sea fish

... The elephant shark, a primitive deep-sea fish that belongs to the oldest living family of jawed vertebrates, can see color much like humans can. This discovery, published in the ...

Montana State team finds Yellowstone alga that detoxifies arsenic

... complex structures. Cyanidioschyzon is a simple one-celled organism classified as a red algae. Rosen added that the alga they studied is a primitive plant, so it might shed light on how plants can tolerate arsenic, which is used in several types of herbicides. The knowledge they gained could also ...

Stem cells replace stroke-damaged tissue in rats

... with other cells, which helps to establish the tissue. "Over a few days we can see cells migrating along the scaffold particles and forming a primitive brain tissue that interacts with the host brain. Gradually the particles biodegrade leaving more gaps and conduits for tissue, fibres and blood ...

Discovering the secret code behind photosynthesis

... Scientists from Queen Mary, University of London have discovered that an ancient system of communication found in primitive bacteria, may also explain how plants and algae control the process of photosynthesis. Two-component signal transduction systems (TCSTs) have long ...

Famous fossil Lucy scanned at the University of Texas at Austin

... of delicate fossils and biological specimens, including irreplaceable items such as the brain case of Archaeopteryx (one of the oldest and most primitive birds known). Because CT allows scientists to see inside fossils without doing any harm, it has become one of the most powerful tools for studying ...

Caltech researchers help unlock the secrets of gene regulatory networks

... Albert Billings Ruddock Professor of Biology, focuses on the gene regulatory network underlying neural crest formation in the lamprey, the most primitive living vertebrate. The neural crest is a group of embryonic cells that are pinched off during the formation of the neural tube--the precursor to the ...

How mirror neurons allow us to learn and socialize by going through the motions in the head

... mechanism is not confined to primates, but is shared by different phyla," said Viale. However the mechanism is not thought to be present in more primitive animals, including the lower cold blooded vertebrates, that is fish, reptiles and amphibians. ...

Argonne scientists discover possible mechanism for creating 'handedness' in biological molecules

... by irradiation of molecules as they traveled through the universe while adsorbed on a magnetized substrate in a dust cloud, meteor, comet or on a primitive planet. "Our study shows that spin-polarized secondary electrons interacting with chiral molecules could produce a significant excess of a given ...

December 2008 Geology and GSA Today media highlights

... and sophistication of tool making at Gademotta and nearby Kulkuletti are markedly advanced for the antiquity of the sites' ages, suggesting that more primitive MSA archaeology should be even older, and that the MSA evolved at different rates in different places. If the emergence of the MSA is linked to the ...
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(Date:7/10/2014)... ANN ARBOR Because the strong currents in the ... rupture of the oil pipeline beneath the channel would ... and Huron, according to a new University of Michigan ... one scenario examined in the study and accompanying animations, ... and Round Island after 12 hours and Bois Blanc ...
(Date:7/10/2014)... Anoplolepis gracilipes is ranked amongst the top 100 worst ... on islands. A new study published in the open access ... effects and dangers of the introduction of the yellow crazy ... of the Valle de Mai, a UNESCO World Heritage Site, ... Mai is a unique ecosystem containing many endemic species, including ...
(Date:7/10/2014)... YORK, NY (July 10, 2014) Columbia University Medical ... personalized gene therapies for patients with retinitis pigmentosa (RP), ... first of its kind, takes advantage of induced pluripotent ... retinal cells, which are then used as a patient-specific ... this approach, researchers led by Stephen H. Tsang, MD, ...
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