Tag Archives: evolution

Otago geologists find new whale species | Radio New Zealand News

From www.radionz.co.nz | September 13, 2015 Fossil discoveries by University of Otago palaeontology researchers have helped fill an important gap in the evolution of baleen whales. In the 1990s, Otago geologists found the fossils in the South Island’s Waitaki River area, and a study about them has just been published in two science journals. One of the lead researchers, Ewan Fordyce, said the fossils show two previously unknown species of filter-feeding baleen whales that lived 25 to 30 …

Fossils suggest animals and not a meteorite wiped out planet’s first ‘Ediacarans’ microbes | Daily Mail Online

… study says Mass extinctions are usually blamed on rapid events, such as meteorite impacts and volcanic super-eruptions. But the world’s first known mass extinction – which took place about 540 million years ago – was caused by something far more slow-moving: evolution. A new study has found that Earth’s earliest microbes were wiped out by the evolution of complex life. ‘People have been slow to recognise that biological organisms can also drive mass extinction,’ …

Giant lion find in Outback NT | NT News

By David Sibenaler | August 25, 2015 AN 8 million-year-old marsupial lion bone has been found at an ancient fossil bed in Central Australia. The site at Alcoota Scientific Reserve will be visited by researchers next month attending the 15th Conference of Australasian Vertebrate evolution, Palaeontology and Systematics (CAVEPS) in Alice Springs. The Pleistocene Marsupial Lion is the largest meat-eating mammal to have lived in Australia, and one of the largest marsupial carnivores the world has …

The role of species competition in biodiversity

… from around 40 million years ago to the present; theorizing that competition from other species was a factor driving extinction rates, they also compiled data for five additional carnivore families including cats, bear dogs, false saber-tooth cats, and bears. They developed an analytical framework to invesigate whether speciation and extinction rates responded to evolution of body mass—a good approximation of diet for canids. The authors suggest that body size can indirectly correlate with …

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