Female "Occulate Being" with inverted "fetus" shown inside. The inverted position of the internal figure replicates the desired "presentation" for a baby about to be born. Repetition of the inverted form may have been a metaphor for successive generations, those yet to be born. Adapted and redrawn from Paul (1986).
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.