This bowl from Ayacucho is decorated with the triple recurved ray motif (a) and the banded rectangle motif (b), probably derived from Nasca's Humped Animal or Monkey theme (Knobloch 2005:133, Figure 11). The two motifs appear early in Ayacucho's Chakipampa pottery style and serve as excellent diagnostics of Middle Horizon Epoch 1a and early 1b.
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.