triassic

The fact that one is from the Triassic while the other is from the Cretaceous doesn't make the latter less of a dinosaur.

Rivers banks laid down at the end of the Permian meander, river banks laid down at the start of the Triassic do not.

The first dinosaurs were in the Triassic (roughly 240 mya).

So start of Triassic really was a blow to life!

> Rivers banks laid down at the end of the Permian meander, river banks laid down at the start of the Triassic do not.

The Permian-Triassic boundary extinction, the "Great Dying", is though to be related to the massive Siberian Traps large igneous province.

There are also reasons to think the Permian-Triassic was caused by volcanic activity burning a lot of coal.

Just such "reverse weathering" has been hypothesized to occur after the Permian-Triassic boundary, where CO2 levels stayed elevated for 5 million years.

The current global CO2 emission rate is about 200x the average emission rate during the Permian/Triassic mass extinction.

Dinosaurs had lived through other weird episodes, the Carnian pluvial episode, and the end-Triassic mass extinction.

For instance, there are a few species of sharks that have changed very little since Triassic, more than 200 million years ago.

His point was people should be more interested in the early Triassic.

The Permian-Triassic boundary extinction, the "Great Dying", is though to be related to the massive Siberian Traps large igneous province.

Just such "reverse weathering" has been hypothesized to occur after the Permian-Triassic boundary, where CO2 levels stayed elevated for 5 million years.

In fact the largest known extinction event, the Permian–Triassic, which wiped out something like 94% of all organisms, was caused mostly by "natural" causes - not an asteroid impact or something external.

But in the geohistorical context, ”events” are commonly understood as asteroid impacts, such as the Tunguska event and the Triassic–Jurassic extinction event, so the choice of word carries a heavy implication in this context.

There are also reasons to think the Permian-Triassic was caused by volcanic activity burning a lot of coal.

The current global CO2 emission rate is about 200x the average emission rate during the Permian/Triassic mass extinction.

Dinosaurs had lived through other weird episodes, the Carnian pluvial episode, and the end-Triassic mass extinction.