WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
Nature The World Movies USA Top Art Fine & Rare History Ivy & Inquiry
Extinction event
Videos
An extinction event is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms. It occurs wh
Trilobites were highly successful marine animals through much of the Paleozoic, only to succumb to extinction at the Permian–Triassic extinction event
Trilobites were highly successful marine animals through much of the Paleozoic, only to succumb to extinction at the Permian–Triassic extinction event
Badlands near Drumheller, Alberta, where erosion has exposed the Cretaceous–Paleogene boundary.
Badlands near Drumheller, Alberta, where erosion has exposed the Cretaceous–Paleogene boundary.
Luis (left) and Walter Alvarez (right) at the K-Pg boundary in Gubbio, Italy in 1981. This team discovered geological evidence for an asteroid impact
Luis (left) and Walter Alvarez (right) at the K-Pg boundary in Gubbio, Italy in 1981. This team discovered geological evidence for an asteroid impact causing the K-Pg extinction, spurring a wave of public and scientific interest in mass extinctions and their causes
An artist's rendering of an asteroid a few kilometers across colliding with the Earth. Such an impact can release the equivalent energy of several mil
An artist's rendering of an asteroid a few kilometers across colliding with the Earth. Such an impact can release the equivalent energy of several million nuclear weapons detonating simultaneously.
Triassic–Jurassic extinction
Videos
The Triassic–Jurassic extinction event, often called the Triassic–Jurassic mass extinction or end-Triassic extinction, marks the boundary between the Triassic and Jurassic periods, 201.4 million years
Extinction event
…Great Dying" likely constitutes a separate event from the P–T extinction; if so, it would be larger than some of the "Big Five" extinction events. The End Triassic extinction marks the Triassic–Jurassic transition. About 23% of all families, 48% of all genera (20% of marine families and 55% of marine genera) and 70% to 75…
Capitosaurs (such as this Mastodonsaurus) were among the major amphibian groups which became extinct at the T–J boundary, though many may have died ou
Capitosaurs (such as this Mastodonsaurus) were among the major amphibian groups which became extinct at the T–J boundary, though many may have died out earlier.
Reptile extinction at the end of the Triassic is poorly understood, but phytosaurs (such as this Redondasaurus) went from abundant to extinct by the e
Reptile extinction at the end of the Triassic is poorly understood, but phytosaurs (such as this Redondasaurus) went from abundant to extinct by the end of the Rhaetian.
Maximum extent of CAMP volcanism at the Triassic-Jurassic boundary
Maximum extent of CAMP volcanism at the Triassic-Jurassic boundary
The Manicouagan reservoir in Quebec, a massive crater formed by a Late Triassic impact. Radiometric dating has determined that it is about 13 million
The Manicouagan reservoir in Quebec, a massive crater formed by a Late Triassic impact. Radiometric dating has determined that it is about 13 million years older than the Triassic–Jurassic boundary, and thus an unlikely candidate for a mass extinction.