Who made Nigeria coat of arm?

Nigeria's coat of arms was designed by a Nigerian artist named K. O. Adebayo. It was officially adopted in 1975 and features a black shield, representing Nigeria's rich soil, and two supporting horses, symbolizing dignity. The coat of arms also includes a wavy band, representing the Niger and Benue Rivers, and a flower, the Costus spectabilis, which is Nigeria's national flower. The design reflects the nation's diversity and cultural heritage.