Though other paleontologists claimed that their specimens came from larger dinosaurs, their estimates had been based on fragmented remains.
Museums were slow to adopt the change in classification, and several still labeled their specimens Brontosaurus until the 1980s.
Delta had maintained that the tests were accurate, and the four flight attendants, though insisting that they had not tampered with their specimens, had been unable to challenge the airline's decision.
She spent hours poring over their specimens and research records in their laboratories at Sweet Briar College, the Virginia women's liberal-arts college that, in a sad twist, is itself on the verge of extinction.
He said that given Quest's large distribution network and quality of service, he thought that doctors and patients would insist that UnitedHealthcare use Quest's laboratories to test their specimens.
The Secret Science Club also plays host to an annual taxidermy contest, where entrants present their specimens — everything from a stuffed armadillo to a bird of paradise to a tableau of albino weasels — before a panel of judges.
Dr. Willerslev said that the Russian researchers should analyze the DNA of their specimens and prove that this is the case.
Their specimens were mixed with saline in a blender and strained, to produce a solution that Dr. Keller said resembled chocolate milk.
The best artists must be shrewd observers of nature in the wild, she writes, in order to make their specimens come to life.
"Herbaria are becoming more valuable because their specimens are often old enough to aid in documenting climate change and environmental degradation," she said.
As these newcomers moved in the old species vanished, so that today only one type of human being remains.Dr Arsuaga and his team analysed all aspects of their specimens' skulls.
