group of spiders and their relatives. The chelicerates originated as marine animals. The first confirmed chelicerate fossils, the eurypterids, date from 445...

a clade of chelicerates, it is made up of Arachnida (Spiders, scorpions, mites, and their relatives), Chasmataspidida (extinct chelicerate group), Eurypterida...

pair of short enlarged appendages at the front. They look like early chelicerates. Most of them lived in marine environments round the world from the lower...

two appendages on the front of a spider's head. Other arachnids, and chelicerates that are not arachnids also have pedipalps. Some spiders seem to have...

and head appendages, he decided that it was not a trilobite, nor a chelicerate, nor a crustacean. Marrella-like organisms are found in other Cambrian...

where the head and the thorax are one. It is common in crustacea and chelicerates. The cephalothorax may be covered with a tough carapace. Eldra Pearl...

up of four groups of living animals and one group of extinct animals: Chelicerates include mites, horseshoe crabs, scorpions and spiders. Myriapods include...

They are members of the extinct order Eurypterida. It is a most diverse Chelicerate order. They are also called sea scorpions. The largest, such as Jaekelopterus...

Xiphosura is an order of marine chelicerates. It includes a large number of extinct lines and only four recent species in the family Limulidae, which include...

true spiders, or even arachnids. Their traditional classification as chelicerates would put them closer to true spiders than to other well-known arthropod...

valuable resource for functional and evolutionary genomic studies in chelicerates". GigaScience. 8 (8) giz099. doi:10.1093/gigascience/giz099. PMC 6701490...