Callianassidae Dana, 1852

Hyžný, Matúš & Dulai, Alfréd, 2014, Deep-water fossorial shrimps from the Oligocene Kiscell Clay of Hungary: Taxonomy and palaeoecology, Acta Palaeontologica Polonica 59 (4), pp. 947-965 : 950

Family Callianassidae Dana, 1852

Discussion. ―This long recognized family of fossorial shrimps has a robust fossil record consisting of 218 named species ( Schweitzer et al. 2010) and spanning from the Early Cretaceous to Holocene. However, the evolutionary relationships between respective taxa are hindered as more than one-third of all species are classified within the waste-basket-taxon “ Callianassa ”. As a result, the callianassid fossil record is in need of revision. Unfortunately there are discrepancies in proposed biological classifications of the group Manning and Felder 1991; Poore 1994; Sakai 1999b, 2005, 2011; De Grave et al. 2009). Relationships between genera are also not completely clear (cf. Tudge et al. 2000; Felder and Robles 2009; Robles et al. 2009; see also Dworschak et al. 2012). The assignment of fossil material to biologically defined genera was recently discussed by Schweitzer and Feldmann (2002), Schweitzer et al. (2006), Hyžný and Karasawa (2012), Hyžný and Hudáčková (2012) and Hyžný and Müller (2012).