A review of Gammaridae (Crustacea: Amphipoda): the family extent, its evolutionary history, and taxonomic redefinition of genera Author Hou, Zhonge Author Sket, Boris text Zoological Journal of the Linnean Society 2016 2015-09-09 176 2 323 348 http://dx.doi.org/10.1111/zoj.12318 journal article 10.1111/zoj.12318 0024-4082 5357553 GENUS MARINOGAMMARUS SCHELLENBERG, 1937 B Type species Gammarus marinus Leach, 1815 . Aditional species Molecularly (conditionally) proven ( Hou et al ., 2014 ) taxa are: Gammarus obtusatus Dahl, 1938 , Marinogammarus pirloti Sexton and Spooner, 1940 ; probably also Gammarus finmarchicus Dahl, 1938 , and Marinogammarus atlanticus Dahl, 1958 . Distribution Marinogammarus spp. inhabit shallow eastern and north-western North Atlantic waters, particularly where influenced by freshwater inflow. If G. olivii belongs here, as supposed by Sexton & Spooner (1940) , the genus is also present in the Mediterranean. Remarks Marinogammarus is a sister clade to Homoeogammarus + Ponto-Caspian group of genera, and molecularly very distant from that sister group. It also differs in biogeography.