Faune du calcaire carbonifère de la Belgique Bruxelles, F. Hayez, impr, 1878-87, Belgium, brachiopod, fossil, carboniferous, fishes, fossil, mollusks, fossil, paleontology, fossils, sea, ocean, shells, A detailed scientific illustration showcasing a variety of shell species from the class Bivalvia. The arrangement includes intricate representations of different shapes, sizes, and textures of shells, highlighting their unique patterns and structural characteristics. Each specimen is numbered and meticulously rendered to depict features such as ridges, grooves, and overall morphology. This collection serves as an educational resource for studying marine biology and the diversity of mollusks.