Sentences with phrase «vertebrate evolution»

Taken as a whole, West Texas vertebrate faunas collected in and around Big Bend National Park, the Devil's Graveyard, and the Sierra Vieja provide a record of North American vertebrate evolution spanning the entire Eocene (Wasatchian - Chadronian).

December 21, 2011 «Head - first» diversity shown to drive vertebrate evolution The history of evolution is periodically marked by explosions in biodiversity, as groups of species try out a wide range of shapes and sizes.

This is consistent with the distinct reproductive functions of DAZ and Dazl homologs, and the late arrival of Dazl in vertebrate evolution and DAZ in primate evolution (Figure 2B and 2C)[35], [38], [41], [47], [55].

A new study from SciLifeLab / Uppsala University published in PLOS ONE shows that genes crucial for vision were multiplied in the early stages of vertebrate evolution and acquired distinct functions leading to the sophisticated mechanisms of vertebrate eyes.

Just like the opsins were multiplied and evolved distinct functions in early vertebrate evolution, also the transducins and their target enzyme were duplicated and diverged to separate functions.

«There are few representatives of these early branches in vertebrate evolution that are still around today,» Coates said, which is why so much scientific attention has been paid to lampreys.

Reservoir of mutations enabled cichlid fish to adapt to varied environments; results shed light on mechanisms of vertebrate evolution

Sharks belong to a more basal group of vertebrates and their scales have been observed in the fossil record over the course of 450 million years of evolution, so the Sheffield researchers believe this indicates that all vertebrates, whether they live on land or in the sea, share the same developmental programme for skin, teeth and hair that has remained relatively unchanged throughout vertebrate evolution.

The authorities in vertebrate evolution assumed that the ancestor of all vertebrate came from marine organisms.

From an evolutionary perspective, the findings reveal that sophisticated immune defense mechanisms in respiratory surfaces came about very early in vertebrate evolution.

The northeastern part of the country holds a fossil record spanning more than 100 million years of vertebrate evolution.

Gowan Dawson's Show Me the Bone illustrates how our extensive knowledge of vertebrate evolution, on which Bonnan so effortlessly draws, was far from easily acquired.

«These findings demonstrate a single origin of gills that likely corresponds with a key stage in vertebrate evolution: when some of our earliest relatives transitioned from filtering particles out of water pumped through static bodies to actively swimming through the oceans,» says lead author Dr Andrew Gillis, a Royal Society University Research Fellow in Cambridge's Department of Zoology, and a Whitman Investigator at the Marine Biological Laboratory in Woods Hole, US.

This supports the view that teeth evolved from scales, which arose much earlier in vertebrate evolution.»

Vertebrate evolution generally proceeds at far less than a snail's pace, making study of the process in living animals difficult at best.

Because the Daohugou Biota and the much better studied Jehol Biota are similar in preservational mode and geographic location, but separated by tens of millions of years, they give palaeontologists an outstanding, even unique, opportunity to study changes in the fauna of this region over a significant span of geological time and an important period in vertebrate evolution.

The Daohugou Biota makes an immense contribution to our understanding of vertebrate evolution during this period, with such notable creatures as the oldest known gliding mammal, another early mammal that may have swum with a beaver - like tail, the oldest dinosaurs preserved with feathers, and a pterosaur that represents an important transitional form between two major groups.

Nothing collapses the entire history of vertebrate evolution into a cozy family reunion quite like paleopathology.

«Re-examination of old fossils using new techniques is just as important for revitalizing our understanding of vertebrate evolution.»

Organisms with a spine do not automatically become human, human isn't the goal of vertebrate evolution.

Not exact matches

Originally when life was first evolving, there were no vertebrates, evolution doesn't have «one thing turning into another» like pokemon, it has life branching off like a giant complex web.

There is no such «direct» evolution: animals, bacteria, and algae have a common ancestor from which they have diverged, as can be shown by aligning and comparing amino acid sequences of proteins and nucleotide sequences of homologous ribosomal RNA molecules that are found in both bacteria and vertebrates.

The small family of hominids, the last shoot to emerge from the main stem of Evolution, has of itself achieved a degree of expansion equal to, or even greater than, that of the greatest vertebrate layers (reptile or mammal) that ever inhabited the earth.

All the major textbooks covering the topic of the evolution of the vertebrates will need to be re-written if our suggestion survives academic scrutiny.»

In «Evolution of the Eye,» Trevor Lamb draws together multiple lines of evidence to create a persuasive narrative for the early evolution of the vertebEvolution of the Eye,» Trevor Lamb draws together multiple lines of evidence to create a persuasive narrative for the early evolution of the vertebevolution of the vertebrate eye.

It appears the vertebrate src gene has survived long periods of evolution without major change, implying that it is important to the well - being of the species in which it persists.

This is typical Rothschild: considering the bends not as a human ailment, first documented by a miner in 1841, but as a vertebrate's disease, one that can be tracked backward through more than 200 million years of mammalian evolution.

The study published yesterday in Nature Ecology and Evolution analyzed data on more than 11,000 vertebrate species, including fossil records from the past 270 million years.

Creationists have long contended that the vertebrate eye is too complex to be a product of evolution.

Hornworm moth larvae respond aggressively when pecked by vertebrate predators such as birds, but it wasn't clear whether they reacted toward invertebrate predators in a similar fashion — and whether invertebrates, too, could have played a role in the evolution of caterpillar defenses.

They hope that unearthing more Jurassic vertebrates in this region could provide further insights into the evolution of marine reptiles in this part of the globe.

The team's findings «are another good example of evolution being a predictive science,» says Thomas Holtz, Jr., a vertebrate paleontologist at the University of Maryland in College Park.

This gallery highlights some of their discoveries, and shows what it takes for scientists to operate in one of the least hospitable places on Earth, which, as it turns out, played a key role in the evolution and migration of the planet's vertebrates, including mammals.

«Evolution in wild populations is thus both simpler than many researchers would have predicted and more reproducible,» says vertebrate geneticist David Kingsley of the Stanford University School of Medicine.

«This study reveals some groups of virus have been in existence for the entire evolutionary history of the vertebrates — it transforms our understanding of virus evolution,» said Professor Eddie Holmes, of the Marie Bashir Institute for Infectious Diseases & Biosecurity at the University of Sydney.

«This is a major breakthrough and a beautiful example of convergent evolution where vertebrates at least five times have independently evolved» this ability «by modifying different cell types to serve the same function.»

«The idea that social interaction may have facilitated or led to selection for us to be individually recognizable implies that human social structure has driven the evolution of how we look,» said coauthor Michael Nachman, a population geneticist, professor of integrative biology and director of the UC Berkeley Museum of Vertebrate Zoology.

Jaws and teeth have been important innovations in the evolution of vertebrate animals.

This illustration in a fish with a proven ancient lineage of a highly evolved system controlling variations in heart rate suggests that its evolution was necessarily linked to the advent of air breathing over primitive vertebrate lungs rather than the much later appearance of mammals.

With their proto - lungs and proto - limbs, lungfish represent the earliest stage in the evolution of air - breathing vertebrates.

A team of paleontologists of the Museum für Naturkunde Berlin, the State University of New York at Oswego and Brown University shows in a new study of fossil amphibians that the extraordinary regenerative capacities of modern salamanders are likely an ancient feature of four - legged vertebrates that was subsequently lost in the course of evolution.

A report published in March in the journal Trends in Genetics revealed that the lizardlike native of New Zealand has undergone the fastest rate of molecular evolution of any vertebrate animal studied thus far.

«Rainforest collapse 307 million years ago impacted the evolution of early land vertebrates.»

The development of fins was one of the key moments in the evolution of vertebrates because of the greater mobility that they allowed.

«Deeper origin of gill evolution suggests «active lifestyle» link in early vertebrates.»

A tiny fossil from China could be the earliest of all deuterostomes, creatures that eventually led to evolution of all vertebrates, including humans

Why hasn't evolution produced more vertebrate vampires?

They are a fantastic model for researching the ecology and evolution of vertebrates.

Marine reptiles were among the first vertebrate fossils known to science and were key to the development of the theory of evolution.

This suggests that brain sleep dates back at least to the evolution of the amniotes, that is, to the beginning of the colonization of terrestrial landmass by vertebrate animals.