Varieties of oyster

Pearl oyster, Isognomon isognomum 1, Crenatula picta 2, wing oyster, Pteria hirundo 3, and hammer oyster, Malleus malleus 4, Handcoloured copperplate stipple engraving from Antoine Laurent de Jussieu's Dizionario delle Scienze Naturali, Dictionary of Natural Science, Florence, Italy, 1837. Illustration engraved by Stanghi, drawn by Jean Gabriel Pretre and directed by Pierre Jean-Francois Turpin, and published by Batelli e Figli. Turpin (1775-1840) is considered one of the greatest French botanical illustrators of the 19th century.. (Photo by: Florilegius/Universal Images Group via Getty Images)