“…This is the situation, for instance, in the Peruvian language Shipibo (Panoan) (Valenzuela 2002, Baker 2014. In Section 4, drawing on ideas from Otsuka (2006Otsuka ( , 2010, Bobaljik (2008), and Preminger (2014), I present an alternative view of syntactic ergativity inĀ extraction that can account for the Shipibo facts without requiring that ergative be an inherent case. One consequence of this view is that a ban on Pure head-marking language: a language with an overt morphological agreement system but not an overt morphological case system wh-agreement: a special form of agreement indexing an A-extracted argument Antiagreement: a special absence of agreement, or appearance of default agreement, found when the argument expected to control agreement has A-extracted ergative extraction is expected only in languages with ergative morphological case systems-not, for instance, in ergatively aligned pure head-marking languages.…”