“In the Arcacea the shells are nearly equal, usually thick and furnished with a long row of reeth at the hinge. Among them is the Arca tortuosa the shell somewhat twisted and striated’ found in the Indian Ocean.” — Goodrich, 1859
S. G. Goodrich Animal Kingdom Illustrated Vol 2 (New York, NY: Derby & Jackson, 1859)
2400×1053, 1.2 MiB
1024×449, 167.4 KiB
640×280, 81.3 KiB
320×140, 24.3 KiB