Fig. 4: Cambrian and Ordovician trilobite body size (A) and their correlation to the inferred oxygen levels (B) and temperature (C). (B) Ocean redox conditions and widespread anoxic intervals ...

The dataset shows that the body size patterns of trilobites during the Cambrian and Ordovician periods can be divided into six phases (I-VI), with body size changes concentrated in five brief ...

In reality, these petrified insects are the Ordovician trilobites Merlinia. This case of mistaken identity comes from Merlinia specimens where the tail has broken away from the body and fossilised, ...

Trilobites may have grown in a similar fashion and reached ages that match those of extant crustaceans, ... Reassessing growth and mortality estimates for the Ordovician trilobite Triarthrus eatoni.

Trilobites provide an unparalleled sample set for understanding evolutionary patterns in Palaeozoic marine rocks. There are more than 20,000 known species. Our current research projects include: ...

Using synchroton radiation X-ray microtomography, researchers from Charles University in the Czech Republic have pieced together the last supper of the Ordovician trilobite, Bohemolichas incola.

We finally know for sure what a trilobite ate ... Those rocks date from the Ordovician, which came immediately after the Cambrian and lasted until about 450 million years ago.

The uniquely well-preserved fossil is a Bohemolichas incola specimen, and it represents the most detailed dietary reference we have for these animals. Dating back to the Ordovician, it was ...

Long before the dawn of humans, dinosaurs, insects or even trees, a cascade of unfortunate events threatened to end life on earth. During the Ordovician Period, around 485 to 444 million years ago, ...

Fig.1: Tempo and mode in the body size evolution of Cambrian-Ordovician trilobites. Changes in maximum size (red) and mean size (blue) for each time slice, with lines and shading representing the ...