ABSTRACT: Anew species belonging to the genus Paratrochamminoides is here described from the Paleocene at IODPSite U1511 in the Tasman Sea. The species Paratrochamminoides waskowskae n.sp. is characterized by its streptospiral coiling and elongated pseudochambers. A key to the identification of the Paratrochamminoides species is provided. Species are identified on the basis of their chamber shape and predominant mode of coiling.