Mandibulata Mandibulata Versus Schizoramia

The placement of Crustaceomorpha has been of considerable contention, with the primary schism lying between paleontologists who believe the group to be sister to the Arachnomorpha, and the neontologists who support a mandibulate arthropod group (i.e., Crustacea allied to the Hexapoda and Myriapoda) (Figure 3.1). In most recent analyses, albeit ones that did not include several critical fossils, the Mandibulata is supported as monophyletic (e.g., Scholtz et al., 1998; Bitsch, 2001; Giribet et al., 2001; Fanenbruck et al., 2004) and will therefore be considered as the working hypothesis for the discussion herein.

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