Arachnomorpha
Arachnomorpha is a proposed subdivision or clade of Arthropoda, comprising the group formed by the trilobites and their close relatives (Artiopoda), Megacheira (which may be paraphyletic) and chelicerates. Under this proposed classification scheme, Arachnomorpha is considered the sister group to Mandibulata (including insects, crustaceans and myriapods).
| Arachnomorpha Temporal range: | |
|---|---|
| Fossil of Bellacartwrightia calliteles, a trilobite | |
| Lychas variatus, a scorpion chelicerate | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Arachnomorpha Lameere, 1890 |
| Subgroups | |
| Synonyms | |
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The arachnomorph concept has been challenged by suggestions that the artiopods are more closely related to mandibulates, forming the clade Antennulata instead.
There is no consensus as to assigning Arachnomorpha a formal Linnean rank.
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