Mollusk Shell Cross-Sections: Scientific Diagram of Growth Rings #271180 (License: Personal Use)

This scientific illustration displays three distinct shell cross-sections: (e) an elongated bivalve section with tightly spaced concentric layers, (f) a cluster of three smaller circular sections suggesting gastropod or cephalopod structures, and (g) an oval section with a central siphonal canal. The fine linework emphasizes growth increments, useful for sclerochronology and taxonomic identification. Each labeled part corresponds to classic morphological references in malacological literature.

Used in educational biology, paleontology, and geology resources to teach shell morphology, growth analysis, and fossil interpretation; targets students, researchers, and museum curators seeking visual aids for anatomical comparison.