Sentences with phrase «of paleobotanists»

But 52 million years ago the giant coniferous evergreen tree known to botanists as Agathis thrived in the Patagonian region of Argentina, according to an international team of paleobotanists, who have found numerous fossilized remains there.

Not exact matches

Park University paleobotanist Patty Ryberg and her colleagues are uncovering the fossilized remains of a lush forest that thrived in the Antarctic Circle some 260 million years ago during the Permian period.

Last April, Pfefferkorn and Wang, a paleobotanist with the Chinese Academy of Sciences, described the full magnitude of the find: an entire swath of ancient swamp forest frozen in time beneath more than 20 square miles of volcanic ash.

But in cladoxylopsids, «each strand of xylem had its own growth rings,» says paleobotanist Christopher M. Berry of Cardiff University in Wales, who co-authored the study with colleagues at the Chinese Academy of Sciences in Nanjing and Binghamton University, S.U.N.Y.

«Explaining these glaciations has always been a problem,» says Charles Wellman, a paleobotanist at the University of Sheffield in the United Kingdom, who was not involved in the new work.

«I think they're perfectly right,» says Gregory Retallack, a paleobotanist at the University of Oregon, Eugene.

Like Mellaart, paleobotanists Christine Hastorf and Julie Near of the University of California at Berkeley have found wheat, barley, lentils, and peas at Çatalhöyük.

Now researchers may be able to get around this lack of fossils by looking at insect damage instead, says Leo Hickey, a paleobotanist at Yale University: «The work shows the potential of an overlooked resource in [studying] the evolution of insects.»

The particular pollen they found in the insects» guts, says paleobotanist Bill Chaloner of the University of London, was adapted for wind dispersal, and the bugs could have «inadvertently consumed the pollen while foraging for other plant tissue.»

The question of when this relationship was first established in preangiosperm plants has intrigued paleobotanists for many years.

University of Maryland doctoral student Nathan Jud, a paleobotanist — an expert in plant fossils and their environments — identified the species and its significance.

The new study is an important step in solving several such mysteries about early Earth, says Brigitte Meyer - Berthaud, a paleobotanist at the University of Montpellier in France who was not involved in the research.

It's «a beautiful little experiment,» says paleobotanist Peter Wilf of Pennsylvania State University in State College, who notes that the strategy gives mosses a way to propagate in dry places.

«The importance of vein density has never before been so clearly presented,» says Peter Wilf, a paleobotanist at Pennsylvania State University, University Park.

But last May, paleobotanists at the Florida Museum of Natural History and at Jilin University in Changchun, China, announced fossil remains of «probably the most complete, oldest flowering plant in the world,» says David Dilcher, a scientist who analyzed the 125 - million - year - old fossils.

«To date, there are no fossil plants from this geological era that offer proof of the existence of ornithophily — i.e., the pollination of flowers through birds,» adds paleobotanist Wilde.

I also remember it was the pollen from the European Hornbeam that tipped the paleobotanist's off to the correct time of year in which this famous 5000 year old hiker, or sheep herder died.

«Poor preservation of lacewing fossils had always stymied attempts to conduct a detailed morphological and ecological examination of the kalligrammatid,» says paleobotanist David Dilcher, a co-author on the study that identifies the insects.