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Arthropoda |
 | | Discussion: Chelicerata possess chelicerae, though when considering fossils these are often not preserved and accessory characteristics, median eyes and some degree of post-abdominal differentiation, may be more useful diagnostics. |
| | It is within an extended "Chelicerate-Allided Clade" that a recent study (Cotton and Braddy 2000) has placed some of the more famous Burgess Shale-type problematica, including Leancoila, Yohoia, Fortiforceps, Sidneyia, and Emeraldella. |
| | However, this conclusion is predicated, in part, on the the classical view that chelicerates "have lost the antennae, and the chelicerae are homologous to the second cephalic appendages of antennate arthropods." |
| www.peripatus.gen.nz /Taxa/Arthropoda (4878 words) |
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