Earth, Supernova and Late Devonian extinction

Supernova explosion blamed for two extinction events on Earth
Some of the most massive and influential stars in the universe are OB stars. These blue giants, many times more massive than the Sun, are short-lived but powerful forces that shape their surroundings.
Did supernovae cause mass extinctions on Earth? Scientists say yes
New research suggests that powerful star explosions, called supernovae, may have caused at least two mass extinctions in Earth’s history. Scientists from Keele University believe that these massive blasts stripped away Earth’s ozone layer,
Violent supernovae 'triggered at least two Earth extinctions,' study suggests
At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova explosions, a new study suggests.
Two of Earth's mass extinctions were caused by something much worse than asteroids
The rate of stars going supernova near Earth appears to match two mass extinctions -- 372 million years ago and 445 million years ago.
Supernova study suggests space blasts wiped out ancient life on Earth
At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova explosions, a new study suggests. Researchers at Keele University say these super-powerful blasts – caused by the death of a massive star – may have previously stripped our planet's atmosphere of its ozone,
Supernovas may have caused mass extinctions that killed 85% of life on Earth
Among these are the late Devonian extinction, 372 million years ago, and the late Ordovician extinctions, around 445 million years ago. Somewhere up to 75% or 85% of animal species, mostly marine ...
Supernovae Linked to Two Earth Extinctions
At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova explosions, a new study
New Stellar Census Links Supernovae With Two Ancient Extinction Events
A new census of massive stars points to a correlation between core collapse supernovae and two of the last five mass extinction events here on Earth.
EurekAlert!2y
A high latitude Gondwanan species of the Late Devonian tristichopterid Hyneria (Osteichthyes: Sarcopterygii) (IMAGE)
Life reconstruction of the non-marine component of the Waterloo Farm biota. Hyneria udlezinye is shown together with the tetrapods Umzantsia amazana and Tutusius umlambo, the placoderms ...
The Scientist2y
Infographic: A Look at the Big Five Mass Extinctions
The late Devonian period was characterized by many environmental changes, although it’s not clear what caused an estimated 70 to 80 percent drop in species numbers. Some scientists don’t consider ...
Distant star explosions could have wiped out life on Earth twice
"If a massive star were to explode as a supernova close to the Earth, the results would be devastating for life on Earth," said Nick Wright, an astrophysicist at Keele University in the United Kingdom ...
Lycoming College2y
David Broussard
David Broussard, Ph.D., department chair and assistant professor of biology, focuses his research on the paleontology of Late Devonian (365 – 360 million years ago) vertebrates including extinct ...