Upper Triassic

High school (ages 12+)
History & Culture

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/upper-triassic

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the epoch?Upper Triassic
2. What is the time interval?Approximately 237 to 201 million years before present
3. When did the first dinosaurs appear?The first dinosaurs appeared about 237 to 201 million years ago, during the Upper Triassic period.
4. What other animals lived with the early dinosaurs?Early dinosaurs shared the land with other reptiles like crocodile relatives, pterosaurs that could fly, and marine reptiles such as ichthyosaurs.

Archosaurs: A group of reptiles that includes crocodiles, birds, and dinosaurs, with a significant radiation in the Triassic.
Paleogeography: The study of the past geographical arrangements of continents and oceans.
Adaptive Radiation: The diversification of a group of organisms into forms filling different ecological niches.