Sea Urchin Anatomy Diagram - Oral View with Aristotle’s Lantern #147808 (License: Personal Use)

This vintage-style anatomical illustration depicts the ventral (oral) side of a sea urchin, emphasizing the complex feeding structure known as Aristotle’s lantern-comprising five calcareous teeth and associated muscles. Radiating spines emerge from the test (shell), arranged in pentaradial symmetry, while tube feet and ambulacral grooves are subtly indicated. The fine linework and cross-hatching suggest a 19th- or early 20th-century biological plate, likely sourced from a marine zoology textbook or taxonomic monograph.

Used in educational contexts such as marine biology courses, museum exhibits, or online encyclopedias to explain echinoderm morphology; targets users searching for sea urchin anatomy, Aristotle’s lantern, or invertebrate zoology diagrams.