What happened during the Triassic-Jurassic extinction?

What happened during the Triassic-Jurassic extinction?

Huge and widespread volcanic eruptions triggered the end-Triassic extinction. Some 200 million years ago, an increase in atmospheric CO2 caused acidification of the oceans and global warming that killed off 76 percent of marine and terrestrial species on Earth.

What happened during Triassic period?

The Triassic Period was a time of great change. Bookended by extinctions, this era saw huge shifts in the diversity and dominance of life on Earth, ushering in the appearance of many well-known groups of animals that would go on to rule the planet for tens of millions of years.

What’s the difference between Jurassic and Triassic?

The Triassic was a time of a single world continent, when the first pterosaurs took flight and dinosaurs evolved along with many other animals. In the Jurassic, both plant-eating and meat-eating dinosaurs grew enormous. The world broke into two continents.

What was life like in the Triassic period?

Due to the dry climate, the interior of Pangaea was mostly desert. In higher latitudes, gymnosperms survived and conifer forests began to recover from the Permian Extinction. Mosses and ferns survived in coastal regions. Spiders, scorpions, millipedes and centipedes survived, as well as the newer groups of beetles.

What happened during the Permian mass extinction?

The Permian extinction was characterized by the elimination of over 95 percent of marine and 70 percent of terrestrial species. In addition, over half of all taxonomic families present at the time disappeared. This event ranks first in severity of the five major extinction episodes that span geologic time.

What major geologic events happened during the Jurassic period?

During the Jurassic period, the supercontinent Pangaea split apart. The northern half, known as Laurentia, was splitting into landmasses that would eventually form North America and Eurasia, opening basins for the central Atlantic and the Gulf of Mexico.

What happened after the Jurassic period?

Jurassic Period, second of three periods of the Mesozoic Era. Extending from 201.3 million to 145 million years ago, it immediately followed the Triassic Period (251.9 million to 201.3 million years ago) and was succeeded by the Cretaceous Period (145 million to 66 million years ago).

How much time has gone by since the extinction of the dinosaurs?

After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth.

What caused mass extinctions on Earth?

What causes mass extinctions? Past mass extinctions were caused by extreme temperature changes, rising or falling sea levels and catastrophic, one-off events like a huge volcano erupting or an asteroid hitting Earth. We know about them because we can see how life has changed in the fossil record.

What happened in the Triassic extinction event?

The extinction event was a combination of smaller global extinction events that occurred over the last 18 million years of the Triassic period. Over this period, life on both land and ocean was affected. It is estimated that about 50\% of the known living species during this period completely disappeared.

What happened to dinosaurs during the Jurassic period?

Dinosaurs: During the Jurassic period, relatives of the small, quadrupedal, plant-eating prosauropods of the Triassic period gradually evolved into multi-ton sauropods like Brachiosaurus and Diplodocus. This period also saw the concurrent rise of medium- to large-sized theropod dinosaurs like Allosaurus and Megalosaurus.

What kind of marine life was there in the Jurassic period?

Marine Life During the Jurassic Period. Just as dinosaurs grew to bigger and bigger sizes on land, so the marine reptiles of the Jurassic period gradually attained shark- (or even whale-) sized proportions. The Jurassic seas were filled with fierce pliosaurs like Liopleurodon and Cryptoclidus, as well as sleeker,…

When did the Triassic period start and end?

Triassic Period. Triassic Period, in geologic time, the first period of the Mesozoic Era. It began 252 million years ago, at the close of the Permian Period, and ended 201 million years ago, when it was succeeded by the Jurassic Period.….