The seas were filled with trilobites for nearly 300 million years starting in the Cambrian Period, some 520 million years ago. During their time on Earth, which lasted much longer than the ...

Researchers describe unusual trilobite fossils prepared as thin sections showing the 3D soft tissues during enrollment. The study reveals the soft undersides of enrolled trilobites and the ...

A thin section of a partially rolled-up trilobite whose fossil was found at the Walcott-Rust Quarry in New York. Credit... Losso et al., Proceedings of the Royal Society B, 2023.

He suspects the trilobite was over-eating to trigger moulting, a strategy shared by some modern arthropods. Journal reference: Nature DOI: 10.1038/s41586-023-06567-7 ...

A high-resolution 3-D scan of a fossilized trilobite reveals what the ancient marine arthropod ate before it died: shell fragments, bits of sea urchin–like creatures and other bottom-dwellers ...

This 530 million-year-old fossilized eye is the oldest evidence of this important organ, and shows just how little the eye has changed in the past half a billion years.

References: Fatka, O., & Szabad, M. (2011). Burrowing trilobite caught in the act Paläontologische Zeitschrift DOI: 10.1007/s12542-011-0102-4 ...

A version of this article appears in print on , Section D, Page 2 of the New York edition with the headline: Paleozoic Passion: Before There Were Birds or Bees, How Trilobites Reproduced. Order ...

About 465 million years ago, a now extinct arthropod called a trilobite was eating its way across the present day Czech Republic. After it died, the passage of time actually preserved the ...

In the case of one particular 429-million-year-old trilobite—an extinct arthropod that looked like a big version of a wood louse—a crack in just the right place has allowed paleontologists ...