Scallop Shell Illustration - Vintage Scientific Engraving #3570663 (License: Personal Use)

This finely detailed woodcut or steel engraving depicts a bivalve scallop shell (likely genus *Pecten*), viewed from the dorsal side. The shell features prominent radiating costae, zigzagging growth lines, and a deeply crenulated outer edge; fine cross-hatching renders texture and depth. The hinge area shows the umbo and ligament scar, typical of scientific illustrations from natural history compendia.

Used in educational resources, museum digital archives, or historical biology websites to illustrate mollusk morphology; appeals to researchers, educators, and designers seeking public-domain scientific art.