Sentences with phrase «when paleobiologist»

When paleobiologist Tim White of the University of California, Berkeley, and colleagues described a new human ancestor named Ardipithecus ramidus — or «Ardi» — they challenged many evolutionary assumptions.

Not exact matches

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.

That's why University of Oxford paleobiologist Derek Siveter was elated when he and colleagues found the oldest and most complete sea spider fossil to date in Herefordshire, United Kingdom.

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.