Primordial family members presented in proper semi-major axis vs. inverse diameter plane, along with the low-albedo asteroids located in the innermost region of the main belt. Panel A: the yellow diamonds indicate members with known spin pole from the literature. The plus signs, crossed, and squares are members for which there are dense light curves only from literature, from this work, and from both sources, respectively (see details in Table B.2). Panel B: left side of the V-shape of the primordial family. The prograde asteroids are shown in red and the retrograde asteroids in blue.