73 (3): 401 – 437 23.12.2015 © Senckenberg Gesellschaft für Naturforschung, 2015. Systematics, phylogeny, and taphonomy of ghost shrimps (Decapoda): a perspective from the fossil record Matúš Hyžný *, 1, 2 & Adiël A. Klompmaker 3 1 Geological-Paleontological Department, Natural History Museum Vienna, Burgring 7, 1010 Vienna, Austria; Matúš Hyžný [hyzny.matus@ gmail.com] — 2 Department of Geology and Paleontology, Faculty of Natural Sciences, Comenius University, Mlynská dolina, Ilkovičova 6, SVK-842 15 Bratislava, Slovakia — 3 Florida Museum of Natural History, University of Florida, 1659 Museum Road, PO Box 117800, Gaines- ville, FL 32611, USA; Adiël A. Klompmaker [
[email protected]] — * Correspond ing author Accepted 06.viii.2015. Published online at www.senckenberg.de/arthropod-systematics on 14.xii.2015. Editor in charge: Stefan Richter. Abstract Ghost shrimps of Callianassidae and Ctenochelidae are soft-bodied, usually heterochelous decapods representing major bioturbators of muddy and sandy (sub)marine substrates. Ghost shrimps have a robust fossil record spanning from the Early Cretaceous (~ 133 Ma) to the Holocene and their remains are present in most assemblages of Cenozoic decapod crustaceans. Their taxonomic interpretation is in flux, mainly because the generic assignment is hindered by their insufficient preservation and disagreement in the biological classification. Fur- thermore, numerous taxa are incorrectly classified within the catch-all taxonCallianassa . To show the historical patterns in describing fos- sil ghost shrimps and to evaluate taphonomic aspects influencing the attribution of ghost shrimp remains to higher level taxa, a database of all fossil species treated at some time as belonging to the group has been compiled: 250 / 274 species are considered valid ghost shrimp taxa herein.