EN
We erect a new genus, Elongatolucina, for distinctive large, elongate lucinid bivalve specimens from Miocene sediments from Venezuela. We interpret Elongatolucina to have had a chemosymbiotic mode of life and it may have been seep−restricted. Cryptolucina elassodyseides from Eocene hydrocarbon seep sites in Washington State, USA is incorporated in Elongatolucina.