American Museum of Natural History - Welcome to Trilobite Tuesday! The Devonian trilobites that emerge from outcrops aligning Bolivia's sky-high Altiplano plateau are of special note. Often encased within hard limestone concretions,
![Taphonomy of non-biomineralized trilobite tissues preserved as calcite casts from the Ordovician Walcott-Rust Quarry, USA | Communications Earth & Environment Taphonomy of non-biomineralized trilobite tissues preserved as calcite casts from the Ordovician Walcott-Rust Quarry, USA | Communications Earth & Environment](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs43247-023-00981-5/MediaObjects/43247_2023_981_Fig1_HTML.png)
Taphonomy of non-biomineralized trilobite tissues preserved as calcite casts from the Ordovician Walcott-Rust Quarry, USA | Communications Earth & Environment
American Museum of Natural History - It's time for Trilobite Tuesday! Even very early in their crawl through evolutionary time, trilobites found themselves in a daily battle for survival. More than half
![Clasper appendages discovered in mid-Cambrian trilobite show horseshoe crab-like mating behavior | Department of Organismic and Evolutionary Biology Clasper appendages discovered in mid-Cambrian trilobite show horseshoe crab-like mating behavior | Department of Organismic and Evolutionary Biology](https://oeb.harvard.edu/sites/hwpi.harvard.edu/files/styles/os_news_full/public/oeb/files/trilobite_amplex_sullivan.png?m=1659106189&itok=eg5Ht-pk)
Clasper appendages discovered in mid-Cambrian trilobite show horseshoe crab-like mating behavior | Department of Organismic and Evolutionary Biology
![Frontiers | The Development of the Silurian Trilobite Aulacopleura koninckii Reconstructed by Applying Inferred Growth and Segmentation Dynamics: A Case Study in Paleo-Evo-Devo Frontiers | The Development of the Silurian Trilobite Aulacopleura koninckii Reconstructed by Applying Inferred Growth and Segmentation Dynamics: A Case Study in Paleo-Evo-Devo](https://www.frontiersin.org/files/Articles/259645/fevo-05-00037-HTML-r2/image_m/fevo-05-00037-g001.jpg)