This is a depiction of an Oshun, an African deity. The goddess of love, prosperity, order and fertility.
At the time I didn't know who the artist was but my first thought was....now this makes sense. It was that moment of wow! This is an art piece I would love to see up close.
The Sande Society is a fellowship of women found in West African cultures, which aims at preparing girls for adulthood. 
Sylvia Williams directed installation of five inaugural exhibitions and more than 20 other exhibitions of traditional and modern art, including sculpture, photography, textiles and utilitarian objects. Under her direction, the museum acquired 845 works of art.*
Mother Earth, life & soil. The representation of the earth is depicted as a female antelope with a baby carried on it's back. This could represent fertility and growth in the soil for a good harvest.