A commensal relationship between alpheid crustaceans and gobiid fish in the middle Miocene of southern Poland (Central Paratethys)

Urszula Radwańska


Remains of decapod crustaceans of the family Alpheidae Rafinesque, 1815 and bony fish of the family Gobiidae Bonaparte, 1832 co-occur at a number of localities in the Korytnica Basin (Holy Cross Mountains) and in a newly exposed section along a stream near Niskowa (Outer Carpathians), both in southern Poland. These remains (alpheid major right-sided cheliped tips and gobiid otoliths) are interpreted as documenting a commensal partnership that existed in the shallowest zones of the middle Miocene Fore-Carpathian Basin in southern Poland under environmental conditions that must have been comparable to those of the present-day tropical/subtropical Indo-West Pacific and Caribbean.


Alpheid crustaceans; Gobiid fish; middle Miocene; Poland

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