Mostrar mensagens com a etiqueta extinção em massa. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta extinção em massa. Mostrar todas as mensagens

quarta-feira, 30 de maio de 2018

Família do réptil

https://www.theguardian.com/science/2018/may/30/worlds-oldest-lizard-fossil-forces-rethink-of-reptile-family-tree

Citando:
"they probably originated just before the “Great Dying” – a catastrophic mass extinction event 252m years ago when more than 90% of marine creature and 70% of land vertebrates died. That, Bernardi said, overturns current theories that they arose after the disaster, and reveals that many different species appeared in the wake of the catastrophe due to factors such as a lack of competitors. “It is like the other side of extinctions,” he said. “Squamates, for example, were actually there before the extinction, they went through [it] in some way, and they took the opportunities that opened up just after the extinction,” he said."

terça-feira, 24 de maio de 2016

Fóssil novo e extinções em massa

http://www.bbc.com/news/science-environment-36333459
Citando:
" The specimen suggests marine reptiles evolved quickly after the event.
Previous evidence has suggested it took a long time for animals in the seas to bounce back."

domingo, 10 de abril de 2016

Planet9 "reloaded"

http://www.dailystar.co.uk/news/weird-news/505737/planet-9-nine-comet-wipe-out-life-earth-extinction-Daniel-Whitmire-nibiru-x-tyche-nemesis
PS. Já tinha lido sobre a origem das "mass extinctions" poderem ter origem na estrela "gémea" do sistema duplo de que o sol faria parte. Esta é outra hipótese. No Daily Star? ;)