Sentences with phrase «known vertebrate»

«The midshipman swimbladder muscle generates more contractions per hour than any other known vertebrate muscle, explains Lawrence C. Rome, Professor of Biology at the University of Pennsylvania.

In 2014, Conway Morris was part of the team that discovered Metaspriggina: one of the oldest - known vertebrate fossils, perhaps over 500 million years old, which displayed hints of a gill structure, as well as the muscle arrangement of an active swimmer.

Fugu — the poisonous puffer fish sought after by brave suchi - eaters — has the smallest known vertebrate genome.

The study is «a superb example of how new tools from molecular biology can reveal cryptic, unsuspected variation in even well - known vertebrates like birds,» says H. Lisle Gibbs of McMaster University in Hamilton, Ontario.

Pterosaurs are the earliest known vertebrates to have evolved powered flight and lived during the Early Cretaceous period.

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?

(We know and can see that bacteria evolve quite a bit faster than vertebrates, and once an organism has adapted to its environment sufficiently, evolutionary pressure is lessened — «living fossils»)

No, he killed every land vertebrate which was not on the ark: Everything on the dry land in whose nostrils was the breath of life died.

A wide variety of vertebrates also are known to have «reward circuits» in their brains.

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.

In most vertebrates and some mollusks, the eye works by allowing light to enter it and project onto a light - sensitive panel of cells known as the retina at the rear of the eye, where the light is detected and converted into electrical signals.

What the ancient lizard did with these organs isn't known, but some modern vertebrates use the amplified photosensitivity they glean from the pineal glands to navigate.

The new find is more complete than the Peruvian one, so its height is known more accurately, says Daniel Ksepka of North Carolina State University in Raleigh, in an upcoming paper in the Journal of Vertebrate...

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

This is the rock band's second major contribution to science; as you'll recall, the band revolutionized vertebrate biomechanics in 1983 with their discovery that women possess legs and know how to use them.»)

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

Glaw, who has been going to Madagascar to research its ever - expanding list of amphibians and reptiles for a quarter century, said that B. micra may represent the limit of miniaturization possible for a vertebrate with complex eyes, but said it's impossible to know for sure since each time scientists have proclaimed the discovery of the tiniest one yet, another, tinier species appears.

Unlike the previous studies that focused on certain species or a particular RNA virus, Skalka went broad: She and her colleagues surveyed every vertebrate genome available, 48 in all, and looked for hints of 5666 RNA viral sequences from 38 known families and nine genera that were unclassified.

Different forms of malaria, which is now known to be an ancient disease, may have been at work many millions of years ago and probably had other implications affecting the outcome of vertebrate survival, Poinar said.

Before the consortium came together, he had participated in sequencing the genomes of two vocal learners, a songbird and a parrot, but he knew he couldn't do all of the additional sequencing and analysis work that would be required to identify genes related to vocal learning — not by himself, at least — so he teamed up with Genome 10K, a project aiming to collect genomes for 10,000 vertebrate species.

A planktivorous diet, also called suspension - feeding, is known among some specialized aquatic vertebrates today, including the Blue Whale, Manta Ray and Whale Shark.

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

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.

«That still makes the Greenland shark the longest - living vertebrate known to science.»

Although it is one of the earliest known members this group, its thickened skull dome is surprisingly well - developed for its geological age,» said lead author Evans, ROM curator, vertebrate palaeontology.

Osedax, commonly known as bone - eating worms, are marine annelid worms that are an important example of evolutionary adaptation to a specialised habitat: the bones of vertebrates sunk in the sea.

The latter infect vertebrates ranging from gibbon apes to koala bears to reptiles to domestic cats and are known to cause leukemia, as well as neurological disease.

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.

But «Itchy» was no reptile: The animal, known from two partial skulls and described in July in the Journal of Vertebrate Paleontology, was actually an ancient mammal relative.

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).

Parthenogenesis was known to occur in some fish, reptiles and other vertebrates (as well as in some invertebrates).

It may be one of the first wild fluorescent vertebrates known to science, but it's not making its debut in a pre-eminent research...

He wants to know if similar parings of hardwired and plastic development exist in vertebrates such as humans.

The biologists propose to do that by spending $ 60 million to pull together all the known information to assess roughly 160,000 individual species from four groups: chordates (mammals and other vertebrates); invertebrates (insects and worms); plants; and fungi.

The newly described species (artist's representation shown), which lived between 220 million and 230 million years ago, was one of the largest in a group of amphibians known as metoposaurs and is the first known in this region from well - preserved fossils, the researchers report online today in the Journal of Vertebrate Paleontology.

«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.

Yet a new genetic analysis puts them into the evolutionary spotlight: these creatures, also known as tunicates, are the closest relatives to vertebrates.

Dunne continued: «We now know that the rainiforest collapse was crucial in paving the way for amniotes, the group which ultimately gave rise to modern mammals, reptiles and birds, to become the dominant group of land vertebrates during the Permian period and beyond.»

These fish have a travelling eye and swim on their sides in what is the most extreme example of vertebrate asymmetry — now we know how they develop this useful trait

As Mark Norell, curator of vertebrate paleontology at the museum, puts it, dinosaur artwork «is a fantastic leap from what we know.»

«The Southeast ends up being a really important area for a lot of vertebrate species that we know are going to have to move into the Appalachian area and even potentially farther north,» she added.

«Although our analysis suggests that the new specimen may represent the most phylogenetically basal Cretaceous bird known to date, this phylogenetic hypothesis should be treated with caution given the incomplete preservation of the skeleton and low phylogenetic support values,» said lead author Dr. WANG Min, Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences.

Though some freshwater fish are known to occasionally dine on land vertebrates — an African tiger fish has been filmed plucking a swallow out of the air, for example — it is rare for so many to be eaten.

Biogenic fluorescence is mainly known from marine organisms, but is rare in terrestrial vertebrates.

Tunas are the first vertebrates known to use lymph in locomotion.

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

I did field work in the Sangre de Cristo Mountains, and found ample evidence in the sediment — which contained early jawless fishes, some of the oldest fragments known — for signatures of freshwater deposits, [which suggest that the earliest vertebrates originated in freshwater streams and rivers].

Bloch, a vertebrate paleontologist at the University of Florida in Gainesville, knew he had something that would rewrite the (pre) history books.

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

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.