Sentences with phrase «suggest modern animals»

These new findings suggest modern animals had a common ancestor with a surprisingly complex genome, whose descendants subsequently kept or lost various genes.

Not exact matches

The authors suggest that human activity may even be driving a similar Lilliput - like pattern in the modern world, as more and more large animals go extinct because of hunting, habitat destruction, and climate change.

The find means the branch on the tree of life that contains modern birds is now surrounded by animals with four wings, says Steve Salisbury of the University of Queensland in Brisbane, Australia, which suggests the four - wing condition may have been an important step in the origin of birds.

In their first paper, published in the Journal of Vertebrate Paleontology in 1997, Schweitzer, Horner, and colleagues reported that spectroscopy and chemical analyses of extracts from a T. rex femur suggested preserved proteins, including a form of collagen abundant in modern animal bones.

The new glimpse of the footpaths of animals and humans complement earlier studies that reveal the anatomy and behavior of H. erectus, suggesting that as it evolved modern body proportions, it also increased its home range and began competing with carnivores for carcasses on the savanna, says Harris.

The mere presence of filter feeders as large as Tamisiocaris suggests that Cambrian ecosystems were much more productive than previously recognized, the researchers contend: As seen in modern species as diverse as fish, sharks, and whales, large animals can successfully exploit small prey only when they can be sieved from the environment in great concentrations.

The finding suggests that the rise of animals could have created our modern, oxygen - rich oceans, rather than oxygen - rich oceans triggering the rise of animals.

But genetic studies of modern animals had suggested that all of these creatures evolved from a single - celled ancestor that lived at least 100 million years before that, leaving a huge gap between the estimated origin of animals and the appearance of the earliest known animal fossils.

This argument focuses on a class of chemicals called dioxins, and suggests that in the modern world, overburdened by pollutants, these fat - soluble chemicals accumulate specifically in the fatty tissue of animal products, making a vegetarian — even vegan — diet a necessity for those living in the modern world.

More than 3,000 years of recorded use, as well as modern clinical research in both humans and animals, suggest a wide range of potential applications for BLACK CUMIN SEED OIL ORGANIC - from helping to balance the gut microbiome to benefitting epidermal structure and appearance.