Sentences with phrase «about vertebrate»

«We think about vertebrate flight as falling into four categories: parachuting, gliding, actual flight, and soaring.

Bone broth is a flavorful liquid made by boiling the bones of just about any vertebrate you can think of (typically poultry, beef, bison, lamb, or fish) in water for an extended period of time (typically anywhere from 4 hours to 40 hours!).

See more fossils in the Vertebrate Paleontology collection or learn more about the Vertebrate Paleontology Collection study grant.

The team looked at an outer surface protein of B. burgdorferi found in ticks — which can give clues about the vertebrate host — as well as the probabilities that different host species transmit the microbe during a tick bite, the number of larvae feeding on the animals, and population densities.

In this engaging and highly visual package, your students will learn all about vertebrates and the different types that dominant this earth.

Not exact matches

What do they know about the earliest vertebrate environment and some aspects of dermal skeletal tissue or the Opaque 2 function in maize?

The same evidence was found in another family of proteins, the cytochromes c, and this made it possible to conclude that the common ancestor of yeast, plants, and vertebrates lived about 1.2 billion years ago.

There is no need to recall Haeckel's blasphemy about a gaseous vertebrate: suffice it to remind ourselves of the classical tradition of religious philosophy with its insistence that God can not be defined except in negatives — apoios, without quality, the ontos on, the thelon, (See Philo.

«I expect this to be common because the human predator preys on just about every medium - to - large vertebrate on the planet,» he says.

About 96 % of the world's vertebrate species disappeared, making it one of Earth's five largest die - offs.

Ecosystems left in the wake of a mass extinction that occurred about 359 million years ago (artist's representation shown) contained fish and other vertebrates that were much smaller than the species that lived before the die - off, a new study suggests.

«From people at UT - D, Big Bend National Park, Bell Helicopter, the Smithsonian Institution, the Vertebrate Paleontology Lab at UT - Austin, the dedicated staff and volunteers at the Perot Museum, and other paleontologists who offered advice and insight about these animals, so many people contributed to getting the science done and the information out there for the world to see.»

Flammang agrees, saying what's most exciting about this is that it really underlines the idea that there is a vertebrate body plan that allows for changes that result in different kinds of animals, adding that the work «really unlocks a way of understanding the differences between organisms.»

Because skates are an evolutionarily ancient animal, that means the neurons essential for walking originated in species that separated from other four - legged vertebrates, or tetrapods, about 420 million years ago.

The threatened species include at least 9 % of bees and butterflies and about 16 % of vertebrate pollinators such as bats and hummingbirds.

«We started working on vertebrates about 4 years ago not knowing anything about animal physiology, and we just started learning as we went along.»

All land vertebrates carry a version of the FOXP2 gene, so some of the Oxford researchers then teamed up with colleagues from the Max Planck Institute for Evolutionary Anthropology in Germany to analyze what is unique about the variant in humans and to track how the gene had evolved in our ancestors.

When humans began settling on the island about 2,300 years ago, Madagascar's large vertebrate populations were the first casualties.

At last week's meeting here of the Society of Vertebrate Paleontology, another team of U.S. - based researchers looked at a slightly later but somewhat less severe warming period, which happened about 53 million years ago.

On page 812 of this issue, Sallan and Galimberti (1) show that trends in the body sizes of vertebrates during the Devonian and Mississippian (about 420 to 325 million years ago) not only are markedly different at different times but also likely reflect a variety of different evolutionary mechanisms.

That oddly textured pebble, scientists report at the Society for Vertebrate Paleontology meeting, is actually an endocast — an impression preserved in the rock — that represents the first known evidence of fossilized brain tissue of a dinosaur (likely a close relative of Iguanodon, a large, herbivorous type of dinosaur that lived about 133 million years ago).

Standing less than waist high, these lithe, bipedal creatures measured as much as 1.5 meters long from the tip of their snout to the tip of their tail and weighed about 23.5 kilograms (about as much as a medium - sized dog), says Xing Xu, a vertebrate paleontologist at the Institute of Vertebrate Paleontology and Paleoanthropology ivertebrate paleontologist at the Institute of Vertebrate Paleontology and Paleoanthropology iVertebrate Paleontology and Paleoanthropology in Beijing.

Led by vertebrate paleontologist Xiaolin Wang of the Chinese Academy of Sciences in Beijing, the scientists uncovered at least 215 eggs in a block of sandstone about 3 meters square.

Small fossils about 220 million years old found along steep red slopes in Colorado represent a near - relative of modern animals called caecilians, says vertebrate paleontologist Adam Huttenlocker of the University of Southern California in Los Angeles.

These «virgin births» raised eyebrows because this asexual method of reproduction, called parthenogenesis, is rare among vertebrates: only about 70 backboned species can do it (that's about 0.1 percent of all vertebrates).

Bradshaw and his colleagues recently surveyed studies of 212 vertebrates and found that the typical minimum viable population size required for a species to survive long - term is about 5,000 individuals.

Their paper in the Journal of Heredity notes that the fish does make up the bulk of the 2,000 species of venomous vertebrates; about 500 snake species are poisonous.

Some animals — for instance the cyclothone, the most common vertebrate in the world — even use light as camouflage during the day as they move about more than 1,000 feet beneath the surface.

Zhe - Xi Luo, a vertebrate paleontologist from the Carnegie Museum in Pittsburgh, Pennsylvania, adds: «We now have a finer understanding about exactly where and when these features started to appear.

«Our results with Drosophila exhibit surprising similarities in some respects to what we know about the regulation of resting phases in mammals, allowing for speculation as to whether the Hippo signaling pathway in neural stem cells functions in the same manner in both vertebrates and invertebrates,» stated the paper's first author Rouven Ding.

The belief in five digits as an ancestral character has even extended to fossil reconstructions of Ichthyostega, one of the earliest terrestrial vertebrates from the Devonian (about 390 to 340 million years ago).

Birds» and bats» wings could be called exaptations of arms; however, the structural changes that followed can not be called adaptations because «you are talking about a historical incident; it's not something you can test,» said Mark Norell, a vertebrate paleontologist at the American Museum of Natural History, who studied with Vrba.

In the Gobi Desert of northern China, Xing Xu of the Institute of Vertebrate Paleontology and Paleoanthropology accidentally stumbled upon a gigantic one - and - a-half-ton dinosaur while filming a documentary about a previous find.

In this primitive two - room shed, Congdon has conducted some ofthe most sophisticated life - history studies of long - lived vertebrates — research that could upend our theories about how animals grow old andmight one day help unlock secrets of human longevity.

From fish to monkeys, every kind of vertebrate needs to breathe, eat and move in its environment, so a lot can be inferred about these basically mechanical properties from the bony structures preserved in the fossil record.

According to Strausfeld, confirmation of this shared ground pattern in the vertebrate hippocampus would suggest that it originated from a very ancient common ancestor likely to have lived about 600 million years ago just before the Cambrian explosion, a relatively short period when most major animal phyla emerged.

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

The finding suggests the DNA transposon that gave rise to the two enzymes jumped into an ancestor of lancelets and jawed vertebrates about 550 million years ago.

The oily shale that entombs those fossils was laid down as lake sediments about 47 million years ago, says Walter Joyce, a vertebrate paleontologist at the University of Tübingen in Germany.

Vertebrates ventured from water onto land only once, about 365 million years ago.

First, the team isolated ORCs from newts, whose ORCs are the largest among vertebrates and about three times as large as those of humans.

Ichthyosaurs (which in Greek means «fish lizards») lived from about 248 million years ago to about 95 million years ago, says Da - Yong Jiang, a vertebrate paleontologist at Peking University in Beijing.

Fishes account for over half of vertebrate species, but while groups such as mammals, birds and reptiles have been fairly well understood by scientists for decades, knowledge about relationships among many types of fishes was essentially unknown — until now.

On this week's show: Julius Neilsen talks about the longest - lived vertebrate on Earth, and a daily news roundup

The last common ancestor of sharks and bony fishes probably didn't have gill arches arranged like those in modern sharks — which, in turn, suggests that the oldest known species of bony fishes can likely provide more information about the earliest jawed vertebrates (a group that today includes humans) than early chondrichthyans can, the researchers contend.

These adaptations may have played an important role in the later success of modern mammals once the dinosaurs went extinct about 66 million years ago, says Richard Cifelli, a vertebrate paleontologist at the University of Oklahoma, Norman, who was not involved with the work.

«Branchial rays will figure prominently in the story of the evolutionary origin of vertebrate animal appendages, either by shedding light on the evolutionary antecedent of paired fins / limbs, or by teaching us about the genetic mechanisms that animals can use to invent new appendages,» Gillis says.

A new study overturns a long - held theory about how these asymmetries develop, and the researchers say their work could help explain left - right asymmetries in other animals, such as the position and shape of the heart and liver in humans and other vertebrates.

So, adding on 50,000 or so vertebrates, 400,000 plants, and about 1.3 million other organisms, that brings the total on Earth to maybe 5.5 million species.

These and other details about the two animals that lived about 142 million years ago were presented by biologist Pernille Venø Troelsen from University of Southern Denmark on July 10 2015 at XIII Annual Meeting of the European Association of Vertebrate Paleontologists in Opole, Poland.