EditorialPlacuna placenta, Print, The windowpane oyster (Placuna placenta) is a bivalve marine mollusk in the family of Placunidae. They are edible, but valued more for their shells (and the rather small pearls). The shells have been used for thousands of years...
EditorialPlacuna placenta, Print, The windowpane oyster (Placuna placenta) is a bivalve marine mollusk in the family of Placunidae. They are edible, but valued more for their shells (and the rather small pearls). The shells have been used for thousands of years...
EditorialPlacuna placenta, Print, The windowpane oyster (Placuna placenta) is a bivalve marine mollusk in the family of Placunidae. They are edible, but valued more for their shells (and the rather small pearls). The shells have been used for thousands of years...
EditorialPlacenta Jar with Cover, 300s-500s. Korea, Three Kingdoms period (57 BC-AD 668). Earthenware with impressed design; overall: 55.8 cm (21 15/16 in.); outer diameter: 43 cm (16 15/16 in.).
EditorialHuman anatomy: blood circulation from placenta to the foetus. Handcolored engraving by Fournier after an illustration by Martin St. Ange from Charles d'Orbigny's Dictionnaire Universel d'Histoire Naturelle (Dictionary of Natural History), Paris, 1849.