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Q: How many species lived during the triassic period 225 million years ago?
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Did the thrinaxodon go extinct during the End Triassic extinction?

Thrinaxodon lived during the Triassic Period. They died out about 245 million years ago, at the end of the Olenekian portion of the Triassic period.


When did the triassic period take place?

The Triassic was from about 225 million to 190 million years ago. It is the first period of the Mesozoic ("middle life") Era.The Triassic Period is most commonly believed to have begun 251 million years ago and lasted until 199.6 million years ago.


What time period did triassic period exist?

The Triassic period started 252.2 million years ago and ended 201.3 million years ago. It was the first period of the Mesozoic era.


What is a Triassic rock?

It is a rock that has been identified as having been created during the triassic geoligic period approximately 200 to 250 million years old


Did the dinosaurs die in the triassic period?

Dinosaurs originated in Triassic period 230 million years ago and went extinct in the Cretaceous period i.e. 65 million years ago.


When did the turasic period end?

The Triassic Period ended 201.3 million years ago. It was the period in which the first dinosaurs evolved. The Triassic was followed by the Jurassic period.


Was 250 million years before Dinosaurs?

yes the first dinos appeared 230mya during the late triassic period


What period did the first dinosaur's appear in?

The earliest reptiles known evolved around 312 million years ago, and looked a lot like lizards. However, they were not actually lizards. The oldest known lizard fossil dates to 220 million years ago, about the same time that dinosaurs evolved. That was during the Triassic period of the Mesozoic era.


A timeline of when the dinosaurs where alive?

Dinosaurs have been alive in the Mesozoic Era. The Mesozoic Era consist of three time periods the Triassic, Jurassic, and Cretaceous. The Triassic is the oldest part of the Mesozoic Era. The Cretaceous is the youngest part of the Mesozoic Era. The Triassic period had started 227 million years ago and ended 22 million years later. When the Triassic period ended the Jurassic period started. The Jurassic period started 205 million years ago and ended 61 million years later. After the Jurassic period came the Cretaceous period. The Cretaceous period started 144 million years ago and ended 79 million years later. The dinosaurs have been alive ever since the beginning of the Triassic period and are still alive today. But the dinosaurs that are alive to this day are the evolve creatures of those in the past.


When did a coelophysis live?

The Coelophysis was a theropod that lived between 200 and 220 million years ago during the late Triassic period. Paleontologists believe these dinosaurs became extinct due to severe weather changes and a poisoned atmosphere.


The age of reptiles occurred during the?

The 'Age of Reptiles' occurred during the Mesozoic Era. The Mesozoic Era occurred from 252.17 to 66 million years ago and holds the Cretaceous, Jurassic, and Triassic periods.


What Mammals first appeared during the .?

Triassic Period! :)