Sentences with phrase «only vertebrate»

The only vertebrate species in the world were fish, all of which lived underwater.

Scientists had long suspected that birds and mammals are the only vertebrates to experience rapid eye movement (REM), a sleep state in which the body is mostly immobile but the brain is in overdrive.

Leptin has been the subject of intense interest among researchers — and until now, they thought that only vertebrates produced it.

But of the 60 to 80 phyla of animals, only one, the chordates, led to intelligence, and only the vertebrates actually developed it.

This evidence was crucial because only vertebrates have two different shapes of melanosome, meaning that unlike previous researchers that thought that Tullimonstrum was an invertebrate (animal without a backbone), this is the first unequivocal evidence that Tullimonstrum is a member of the same group of animals as us, the vertebrates.»

Until recently, only vertebrates were believed to sleep in the full metabolic sense.

Until later in the Devonian the fishes were the only vertebrates, and gave rise to all other vertebrate lineages.

It was previously thought that only vertebrates possessed numerous and diverse protocadherin genes.

Not exact matches

Vertebrates 505 Tetrapods 395 Amniotes, 340 Mammals 220 Mammals that birth live young (i.e. non-egg-laying) Placental mammals (i.e. non-marsupials) 125 Supraprimates, bats, whales, most hoofed mammals, and most carnivorous mammals Supraprimates (primates, rodents, rabbits, tree shrews, and colugos) 100 Primates, colugos and tree shrews Primates and colugos79.6 Primates 75 «Dry - nosed» (literally, «simple - nosed») primates (a-pes, monkeys, and tarsiers) 40 «Higher» primates (or Simians)(a-pes, old - world monkeys, and new - world monkeys) «Downward - nosed» primates (a-pes and old - world monkeys) 30 A-pes 28 Great a-pes (Humans, chimpanzees, bonobos, gorillas, and orangutans) 15 Humans, chimpanzees, bonobos, and gorillas 8 Genera H - omo and Australopithecus 5.8 Contains only the Genus H - omo 2.5 Humans 2.5 Modern humans 0.5 Fully anatomically modern humans 0.2

Vertebrates 505 Tetrapods 395 Amniotes, 340 Mammals 220 Mammals that birth live young (i.e. non-egg-laying) Pl - acental mammals (i.e. non-marsupials) 125 Supraprimates, bats, whales, most hoofed mammals, and most carnivorous mammals Supraprimates (primates, rodents, rabbits, tree shrews, and colugos) 100 Primates, colugos and tree shrews Primates and colugos 79.6 Primates 75 «Dry - nosed» (literally, «simple - nosed») primates (apes, monkeys, and tarsiers) 40 «Higher» primates (or Simians)(a-pes, old - world monkeys, and new - world monkeys) «Downward - nosed» primates (apes and old - world monkeys) 30 A-pes 28 Great a-pes (Humans, chimpanzees, bonobos, gorillas, and orangutans) 15 Humans, chimpanzees, bonobos, and gorillas 8 Genera H - omo and Australopithecus 5.8 Contains only the Genus H - omo 2.5 Humans 2.5 Modern humans 0.5 Fully anatomically modern humans 0.2

The Bible said not all species of animals but all kinds of animals, and not all animals, only land vertebrates.

Whenever you qualify the plain language to include only land vertebrates, divinely - delivered eggs / juveniles, suspended animation, etc, you are indicating that the science simply doesn't matter.

2) It appears that god only asked to take the land vertebrates on the ark, the inverts died or survived by themselves by clinging to floating stuff, flying, using air pockets in earth or something like this.

Humans and all vertebrates require cobalt, although it is assimilated only in the form of vitamin B12.»

Saniwa ensidens is the only known jawed vertebrate to have had two eyelike photosensory structures at the top of the head, in addition to the organs we commonly think of as eyes, researchers report April 2 in Current Biology.

ANIMAL welfare legislation generally applies only to vertebrates.

There is only one group of vertebrate that has the capacity to regenerate highly complex structures such as limbs, jaws, tail, spinal cord, or eyes throughout their lives: the urodele amphibians.

«The work not only provides insight into how turtles evolved, but also gives hints as to how the vertebrate developmental programs can be changed to produce major evolutionary novelties.»

As a result, the brown tree frog is the only known southern vertebrate that can survive being frozen.

Mather and Anderson delved deeper, documenting a range of qualities and activities closely associated with intelligence but previously known only in advanced vertebrates.

Adult males of the B. micra species grow to only just over a half - inch (16 millimeters) from nose to bottom, making them one of the smallest vertebrates ever found on Earth.

Last week at the annual SVP meeting here, vertebrate paleontologist Michael Caldwell of the University of Alberta in Edmonton, Canada, and colleagues presented their own observations of the specimen, rebutting Martill's paper point by point to a standing - room - only crowd.

Since the sexual reproduction stage of malaria only occurs in insects, Poinar said in the new study that they must be considered the primary hosts of the disease, not the vertebrate animals that they infect with disease - causing protozoa.

It is the only land vertebrate where the male becomes pregnant, carrying and brooding tadpoles inside its vocal sac until they metamorphose and are spat out as baby frogs.

And Proteus tops the list, as the world's biggest cave animal and Europe's only cave vertebrate.

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.

Brink: No, and I ended up working with cockroaches only because as a school project in the state of Massachusetts, we have regulations on working with vertebrates.

«In the whole history of vertebrates on Earth — the whole history — humans are the only striding biped that's a runner that's tailless.»

The researchers also show that modern deforestation has left us with an estimated extinction debt of 144 vertebrate species found only in tropical forests.

But Iwashita warns that the experiments were only successful in very young rats, which seem to have the characteristics of much lower vertebrates, such as chickens.

This result is surprising because, until recently, scientists believed that TRH only occurred in vertebrates with a thyroid gland, such as fish, birds, and mammals.

The team's insights not only illuminate normal vertebrate development but also could lead to improved understanding of human spinal defects such as scoliosis, said Pourquié, who is also the Harvard Medical School Frank Burr Mallory Professor of Pathology at Brigham and Women's Hospital and a principal faculty member of the Harvard Stem Cell Institute.

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).

TheCiona genome contains ∼ 16,000 protein - coding genes, similar to the number in other invertebrates, but only half that found in vertebrates.

This ranks them among the oldest vertebrates, surpassed only by sedentary invertebrates like clams.

Most of the remains include only bits of bone and are from individuals of various sizes, says Hans - Dieter Sues, a vertebrate paleontologist at the Smithsonian Institution's National Museum of Natural History in Washington, D.C..

For example, bristlemouths, which are among the most abundant vertebrates on Earth, are represented by only 21 species.

When other vertebrates are working hardest, they burn energy at only 25 times their resting rate.

Since two of the three related groups use only somites in vertebral development, Criswell concluded that the common ancestor for all jawed vertebrates had a backbone derived from somites.

Autohaemorrhaging, as this gruesome trick is called, is moderately common in insects, but horned lizards seem to be the only group of vertebrates that do it.

The individual spiders are only the size of a pencil eraser, but they form organized groups that can catch prey ranging from fruit flies to small vertebrates.

In all land vertebrates (including humans), spines form from only one group of cells called somites.

«Only three interventions — severely cutting the number of calories consumed, restricting the amount of methionine (a type of amino acid found in meat and other proteins) in the diet and using the drug rapamycin — have been shown to truly prolong the lifespans of vertebrates, but eating less and not eating meat will not be welcomed by general population, while rapamycin has shown to suppress the human immune system,» Liu said.

Stuart Nixon of Fauna & Flora International (now at Chester Zoo where he has continued his analysis of the survey data), one of the co-authors involved in the study stated, «Grauer's gorilla is found only in the eastern Congo — one of the richest areas on our planet for vertebrate diversity.

While we only get to see the vertebrate collection — missing the first diverse animal fauna of Ediacara — it would be hard to cover a broader realm in so much detail.

But bones tell only a small part of the story, because the body of a vertebrate consists mostly of soft tissues — skin, muscles, nerves, and the like — that decay quickly.

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

At university, science undergraduates can perform potentially harmful experiments on living vertebrates only under Home Office licence.

This atlas, published as the fifteenth Memoir of the Society of Vertebrate Paleontology, represents the culmination of nearly five years of work and thousands of man - hours of digital investigation on the only two associated, near - complete skeletons of the dodo in existence.

Not only is this the sole lungless caecilian, it's by far the largest lungless, four - limbed vertebrate known.