Variations of the names referring to abalone in the Engi-shiki. Graph by E2D3
From Japanese and Asian Historical Resources in the Digital Age by The National Museum of Japanese HistoryMakoto Goto, Satoru Nakamura, Chifumi Nishioka, Arianti Ayu Puspita, Taizo Yamada, Yuta Hashimoto, Natsuko Yoshiga, Tatsuki Sekino, Naoki Kokaze, and Shohei Yamasaki