Complex sentence: In 1816 he met Charles Alexandre Lesueur (1778--1846), a French naturalist, malacologist, and ichthyologist who also became a member of the Academy and later its curator, between 1816 and 1824.
Split into simpler sentences: In 1816 he met Charles Alexandre Lesueur (1778--1846), a French naturalist, malacologist, and ichthyologist. He also became a member of the Academy and later its curator, between 1816 and 1824.