end-Triassic extinction

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Line graph showing the number of marine animal families from the Precambrian era to the present, with illustrations of key groups such as trilobites, ammonoids, marine reptiles, and diatoms. The graph highlights major extinction events and a rise to 1,900 living families today.

Multiple spiral-shaped ammonite fossils embedded in a rough rock matrix, showing detailed ridges and whorls against a black background.

Know about Earth's mass extinctions

end-Triassic extinction: Media

mass extinction

Videos

Know about Earth's mass extinctions

Know about Earth's mass extinctions

An overview of mass extinctions.

Video: © MinuteEarth (A Britannica Publishing Partner)

Images

Line graph showing the number of marine animal families from the Precambrian era to the present, with illustrations of key groups such as trilobites, ammonoids, marine reptiles, and diatoms. The graph highlights major extinction events and a rise to 1,900 living families today.

marine family diversity

The diversity of marine animal families since late Precambrian time. The data for...

Encyclopædia Britannica, Inc.

Multiple spiral-shaped ammonite fossils embedded in a rough rock matrix, showing detailed ridges and whorls against a black background.

ammonoids

Ammonoids, also called ammonites, make up a group of cephalopods that lived from...

© marcel/stock.adobe.com

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