Collisional evolution of the Eulalia family size–frequency distribution (SFD). We define it as the remnant SFD, with considerable material lost to the J3:1. The green curve represents the main belt SFD as modeled by W. F. Bottke et al. (2020). The blue curve illustrates our estimated initial SFD for the Eulalia family. The red curve shows the Eulalia family’s SFD after 870 Myr of collisional evolution. The black curve corresponds to the observed Eulalia family SFD as derived using the methods described in the text. For family members between 3 < D < 8 km, the difference between the blue and red SFD is an approximate factor of 1.5.