(CN) — Understanding the mating behaviors of long-extinct animals is hard. A few severed fossilized appendages may help researchers with that. Published in Geology, their study deals with trilobites, ...

Thanks to their easily fossilized exoskeleton, trilobites largely dominate the fossil record of early complex animal life. However, trilobite appendages and the anatomy of the underside of their body ...

Trident-like horns on the heads of some trilobites were probably used in fights over mates. This hypothesised behaviour is the oldest example of sexual combat that has been identified in the fossil ...

Fossils can tell scientists a lot about an animal such as their morphology, their environment, and where to place them in the tree of life. One thing though that's very difficult to observe in the ...

From a deer’s elaborate branching antlers to the fiddler crab’s oversize claw, the animal kingdom is full of flashy features used in combat to help secure a mate. A team of researchers announced last ...