BlogArena

General blog about anything and everything of everyday's life.

09. Dec 2019

January 21, 2017
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Oldest Known Squawk Box Suggests Dinosaurs Likely Did Not Sing

AUSTIN, Texas — The oldest known vocal organ of a bird has been found in an Antarctic fossil of a relative of ducks and geese that lived more than 66 million years ago during the age of dinosaurs.

February 9, 2013
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Placental Mammal Diversity Blossomed After Age of Dinosaurs

Scientists build new ‘tree of life’ for placentals, visualize common ancestor Scientists have reconstructed the common ancestor of placental mammals–an extremely diverse group including animals ranging from rodents to whales to humans–using the world’s largest dataset of both genetic and … Continue reading

April 18, 2012
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Escalating Arms Race: Predatory Sea Urchins Drive Evolution

ANN ARBOR, Mich.— Nature teems with examples of evolutionary arms races between predators and prey, with the predator species gradually evolving a new mode of attack for each defensive adaptation that arises in the prey species. These adaptations are often … Continue reading

March 19, 2012
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Some Mammals Used Highly Complex Teeth to Compete With Dinosaurs

Conventional wisdom holds that during the Mesozoic Era, mammals were small creatures that held on at life’s edges. But at least one mammal group, rodent-like creatures called multituberculates, actually flourished during the last 20 million years of the dinosaurs’ reign … Continue reading

February 1, 2012
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New Species of Ancient Crocodile, Ancestor of Today’s Species, Discovered by MU Researcher

COLUMBIA, Mo. – A University of Missouri researcher has identified a new species of prehistoric crocodile. The extinct creature, nicknamed “Shieldcroc” due to a thick-skinned shield on its head, is an ancestor of today’s crocodiles. Its discovery provides scientists with … Continue reading