|
Other Arthropods Division This division contains all marine arthropod Items other than trilobites which are listed in the Trilobites Division. Chelicerata The subphylum Chelicerata constitutes one of the major subdivisions of the phylum Arthropoda, including the arachnids, horseshoe crabs, and related forms. These mainly predatory arthropods ultimately outlasted the now extinct trilobites, the common marine arthropod of the Cambrian era. Most of the marine chelicerates, including all of the eurypterids, are now extinct. The chelicerates and their closest fossil relatives (mostly originally included in the Xiphosura) are grouped together with the trilobites to form the taxon Arachnomorpha. Eurypterida (Sea Scorpions)
Xiphosura (Horseshoe Crabs)
|
__________________________________________________________________________________________________ |