Sentences with phrase «paleobiologist at»

«This tells us that humans have been having a massive effect on the environment for a very long time,» said S. Kathleen Lyons, a paleobiologist at the Smithsonian's National Museum of Natural History who led the new research.

Donoghue, a paleobiologist at the University of Bristol in the United Kingdom, and his colleagues started with previously collected genetic data on more than 100 plant and algal species.

«They are not animals and they are not embryos,» says Stefan Bengtson, a paleobiologist at the Swedish Museum of Natural History in Stockholm.

«I think the interpretation is overblown and not supported by the data,» says John Alroy, a paleobiologist at the University of California, Santa Barbara.

Ksepka's new analysis is «a solid piece of work,» says Mark Witton, a paleobiologist at the University of Portsmouth in the United Kingdom.

«This species is a very important intermediate, a transitional form,» says Javier Ortega - Hernández, a paleobiologist at the University of Cambridge in the United Kingdom, who wasn't involved in the research.

«Filter feeding and gigantism are associated, which is a pattern we see in different groups of animals across the tree of life,» says Gregory Edgecombe, a paleobiologist at the Natural History Museum in London, who wasn't involved in the research.

This position is shared by Guillermo Navalon, a Spanish paleobiologist at the University of Bristol who plans to finish his Ph.D. in 2019.

Matt Friedman, a paleobiologist at the University of Oxford in the United Kingdom, thought he could estimate just how likely it was that there are more ancient cichlid fossils out there.

Pathogens that ravaged the body at its death can be entombed within the tooth's inner chamber and detected years later, says Kirsten Bos, a molecular paleobiologist at the Max Planck Institute for the Science of Human History in Jena, Germany, and an author on the study.

Alex Dececchi, a paleobiologist at Queen's University in Kingston, Canada, agrees with the authors» suggestion that Zhenyuanlong's feathers and wings might have been used for sexual display or other kinds of signaling.

When he and his colleague Conrad Labandeira, a paleobiologist at the Smithsonian Institution's National Museum of Natural History, took a second look at the leaves, «we realized the damage [seen by Strong in the modern leaves] matched beautifully with what we had,» Labandeira recalls.

And their giant size may have even promoted greater productivity, «by bringing up nutrients from deep waters as they dive and resurface,» suggests Geerat Vermeij, a paleobiologist at the University of California, Davis, who was not involved in the work.

But that shape doesn't necessarily mean that the feather's former owner could fly, says study coauthor Ricardo Pérez - de la Fuente, a paleobiologist at the Oxford University Museum of Natural History.

Nicholas Butterfield, a paleobiologist at the University of Cambridge in the United Kingdom, acknowledges that the researchers did attempt to account for error.

«We've found that extinction threat in the modern oceans is very strongly associated with larger body size,» said Jonathan Payne, a paleobiologist at Stanford's School of Earth, Energy & Environmental Sciences.

Study co-author Scott Wing, a paleobiologist at the Smithsonian Institution in Washington, adds: «This study gives us the best idea yet of how quickly this vast amount of carbon was released at the beginning of the global warming event we call the Paleocene - Eocene thermal maximum.

For example, the scrape marks could have been made when meat - eating predators, such as the mighty Acrocanthosaurus, scraped their powerful hind legs on the ground to make noise and warn other males — of either the same or a different species — to stay away, says Timothy Isles, a paleobiologist at the University of Portsmouth in the United Kingdom.

One of the authors of the study, Kenshu Shimada, a paleobiologist at DePaul University, said Rhinconichthys are exceptionally rare, known previously by only one species from England.

«People previously thought that you needed some threshold level of oxygen for evolution to work really well,» says Carl Simpson, a paleobiologist at the University of Colorado in Boulder who was not involved in the work.

A 100,000 - year - long cold spell triggered the growth of glaciers almost down to tropical latitudes, says Lauren Sallan, a paleobiologist at the University of Pennsylvania.

These findings «are very interesting,» says Zerina Johanson, a paleobiologist at the Natural History Museum in London.

Not exact matches

The UCLA paleobiologist was the house skeptic at NASA's 1996 press conference introducing the Mars meteorite and its alleged fossils of microbes.

But on (p page 712) of this issue, paleobiologists present data on baby dinosaur pelves and leg joints that suggest the creatures hit the ground running — the bones were robust at birth, implying self - sufficient creatures that didn't need hovering parents.

Now paleobiologist Conrad Labandeira at the National Museum of Natural History in Washington, D.C., has found signs of an insect larva that apparently resided within tree - fern fronds in the swamp forests of Illinois some 300 million years ago.

For instance, the renowned paleobiologist Svante Pääbo, then at the University of California at Berkeley, claimed to have recovered nuclear DNA from an Egyptian mummy.

So they teamed up with Robert Dudley, a paleobiologist also at Berkeley.

Based on scaling up smaller eruptions like the 1991 eruption of Mount Pinatubo in the Philippines, volcanologist Stephen Self of The Open University in Milton Keynes, U.K., and paleobiologist Michael Rampino of New York University in New York City put the cooling at only 3 ˚ to 5 ˚C.

This paper will likely be very influential, adds Lawren Sack, a plant physiologist and ecologist at the University of California, Los Angeles, as paleobiologists can now better estimate photosynthesis for fossils from deep time.