Tag: "fossils" at biology news
Built-in eyeshade offers clue to prehistoric past
...orld at the time of this trilobite is based on the fossils
preserved on what was the sea floor of the ancient continental shelves, this discovery is an interesting new feature that helps us understand how some animals lived centuries ago....
Princeton paleontologist produces evidence for new theory on dinosaur extinction
...mets in the future. Keller does not work with big fossils
such as dinosaur bones commonly associated with pa...ten rock that rained down after the impact.) These fossils
indicate that this impact came about 300,000 years before the mass extinction. The latest evidence c...
Ghost crab fossils haunt area beaches
...oast of the U.S., down to Brazil. That some of the fossils
are as "young" as they are is also significant. Po...bly because of the building of Port Canaveral, the fossils
World's largest forest birds may produce world's deepest bird calls
... investigations are exciting because many dinosaur fossils
exhibit casques at least superficially similar to those of living cassowaries," said Mack. "No one knows for sure what purpose these served in these dinosaurs, so further study of living cassowaries might provide clues to how dinosaurs communicated....
Specialized brain helped ancient reptiles fly and hunt
... on Tyrannosaurus rex."If you look closely enough, fossils
will reveal a whole lot more than we ever thought," he said....
Pack rat middens give unique view on evolution and climate change in past million years
...iments. Barnosky has been excavating and analyzing fossils
from Porcupine Cave in Colorado since 1985, when h...10 recognizable layers of cave sediment, comparing fossils
of 154 first lower molars and 57 third upper molars with 363 specimens taken from modern vole popula...
Ultra-low oxygen could have triggered die-offs, spurred bird breathing system
...il material, as well as the extinction pattern for fossils
in rock outcrops collected from the time of the two extinctions, indicates the events were drawn-out affairs and did not happen suddenly, as they would have with an asteroid impact. In addition, he said it is known which types of creatures, and whic...
Scientists believe ancient arachnids may have spun silk like modern spiders
...re preserved. Easterday obtained the trigonotarbid fossils
in 1999 from Gregory McComas, an avid fossil collector and geology graduate of Youngstown State University in Ohio. McComas discovered the fossil site in 1979, and named it the "7-11 Mine" because it is located at the intersection of Ohio State Route...
A new look at Neoproterozoic Earth
...ne, Queen's University, will present new Ediacaran fossils
from Newfoundland. Some appeared within five million years after the Gaskiers glaciation, suggesting that large animals developed almost immediately after the last Neoproterozoic glaciation. Alan J. (Jay) Kaufman, University of Maryland, will dis...
New evidence says Earths greatest extinction caused by ancient meteorite
...ratum that sat between a layer that contained many fossils
and a layer nearly devoid of fossils
called the Permian/Triassic, or P/T boundary. One of the fossils
that had gone from prominence to su...
Bacteria discoveries could resemble Mars, other planets
...arly a mile beneath the ocean floor. The microbial fossils
they found in miles of core samples came from the Pacific, Atlantic and Indian oceans. Fisk said he became curious about the possibility of life after looking at swirling tracks and trails etched into the basalt. Basalt rocks have all of the element...
Scientist challenges interpretation of new find, the oldest primate fossil ever discovered
...in North America because that's where the earliest fossils
were found initially; but we should be more open-m...biogeography The earliest known undoubted primate fossils
are about 55-million-years old from sites in North America, Europe and now Asia. Scientists had pre...
New study shows Neanderthals were not our ancestors
...ossil record. . The data used included Neanderthal fossils
, Upper Paleolithic European modern human fossils, and recent human populations, as well as data from living African apes and Old World Monkeys. "Our motivation was to devise a quantitative method to determine what degree of difference justified cla...
Dinosaur fossil record compiled, analyzed
...context of stratigraphy -- essentially how old the fossils
are. It's important to know the quality of the fossil record to better assess whether an apparently large number of genera at any one time say, the late Jurassic period is due to genuine species diversity or just exceptionally good preservation. ...
Penguin bones from 'land of fire' rewrite bird's evolution
...geologist Eduardo B. Olivero's team discovered the fossils
in 1999, and Olivero asked Clarke to help identify...that occurred in the mid-Eocene. All other penguin fossils
date to long after that 'icehouse' phase began and after the Antarctic icecap is inferred present." ...
Human evolution at the crossroads: Integrating genetics and paleontology
..." she said. "The thinking has been that if hominid fossils
5 million years old have thick enamel, they are hu...ily from two sources, Hlusko said: recovery of new fossils
(fieldwork); and the integration between genetics, development and paleontology. Speakers in the sym...
Experts to lecture in US cities this spring about new human origins research
...y of the National Museums of Kenya, studying human fossils
newly found in the Lake Turkana region. This work resulted in the announcement in 2001 of a new genus of human ancestor, Kenyanthropus platyops. - Craig Stanford is Professor of Anthropology and Biology at the University of Southern California, and...
A picture is worth a thousand miles not traveled to measure the fossil of an ancient sea creature
...r, traveling the world to measure these creatures' fossils
would take several life-times and more travel fund...archers is determining whether measuring photos of fossils
collected worldwide would be a reliable way to compile body size data. Richard A. Krause Jr. of Gree...
Proven method of bone analysis may clarify human origins
...il record is still fragmentary and incomplete, the fossils
are diverse and plentiful enough to present a very... next challenge will be to apply the method to the fossils
themselves, and we're anticipating some fascinating results."...
Ferns diversified in shadow of flowering plants
...e fossil record, and to assign fern and angiosperm fossils
to currently existing lineages. "The integration of fossils
with molecular phylogenetic data is an extremely powerful tool for identifying historical trends and...
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