 Likewise no known examples of R1b1*, also known as R-L278* and R-L278(xL754,PH155), have been found.In early research, because R-M269, R-M73 and R-V88 are by far the most common forms of R1b, examples of R1b(xM73,xM269) were sometimes assumed to signify basal examples of "R1b*".However, while the paragroup R-M343(xM73,M269,V88) is rare, it does not preclude membership of rare and/or subsequently-discovered, relatively basal subclades of R1b, such as R-L278* (R1b1*), R-L389* (R1b1a1*), R-P297* (R1b1a1a*), R-V1636 (R1b1a1b) or R-PH155 (R1b1b).