Safekipedia
Aquatic arthropodsArtiopodaCambrian first appearancesLopingian extinctions

Trilobite

Adapted from Wikipedia · Explorer experience

A collection of ancient trilobite fossils showcasing different species from Earth's history.

Trilobites: Ancient Sea Friends

Trilobites were tiny sea creatures that lived millions and millions of years ago. They had hard shells that helped keep them safe, and their shells turned into fossils. Because of these fossils, we can learn about them today!

These interesting little animals came in many shapes and sizes. Some moved along the ocean floor, while others swam in the water. They liked to eat tiny plants and animals called plankton.

Trilobites first appeared about 521 million years ago during a time called the Cambrian period. They lived in oceans all around the world for nearly 270 million years. Their fossils help us learn about how life on Earth has changed over time.

Trilobites belonged to a group called Artiopoda. They had hard shells made of calcite. Scientists think they might have been close to horseshoe crabs or even insects.

You can find trilobite fossils in many places around the world. In the United States, a great place to see them is in Hamburg, New York, at Penn Dixie Fossil Park & Nature Reserve. In the United Kingdom, Wren's Nest in Dudley is famous for its trilobites. Other important locations include British Columbia in Canada, China, Germany, and Morocco.

Scientists love studying trilobites because they help us understand how life changes over time. Some U.S. states, like Ohio, Wisconsin, and Pennsylvania, even chose trilobites as their official state fossils!

Images

Scientific illustration of an ancient tiny sea creature, showing different views to help scientists study its body structure.
Scientific reconstruction of Squamacula clypeata, an ancient sea creature from the Cambrian period.
An artist's reconstruction of Zhiwenia coronata, an ancient sea creature from the Cambrian period, showing its back view.
Scientific illustration of Acanthomeridion serratum, an ancient arthropod, showing its body structure from top and bottom views.
An artist’s reconstruction of Sidneyia inexpectans, an ancient marine animal from the Cambrian period.
An artist’s reconstruction of Cheloniellon calmani, an ancient sea-dwelling arthropod from the Devonian period.
Reconstruction of Aglaspis spinifer, an ancient arthropod from the Cambrian period.
A scientific restoration of Retifaces abnormalis, an ancient sea creature from the early Cambrian period.
An artist's reconstruction of Pygmaclypeatus daziensis, an ancient trilobite that lived millions of years ago.
Scientific reconstruction of Naraoia magna, an ancient sea creature with a segmented body and limbs.
Scientific reconstruction of Kuamaia lata, an ancient microfossil organism.
An artist's reconstruction of Kodymirus vagans, an ancient arthropod from the Cambrian period discovered in the Czech Republic.
Scientific illustration showing the evolutionary changes in an ancient group of marine organisms over time.

This article is a child-friendly adaptation of the Wikipedia article on Trilobite, available under CC BY-SA 4.0.

Images from Wikimedia Commons. Tap any image to view credits and license.