Achille Valenciennes (August 9, 1794 - April 13, 1865) was a French zoologist. August 9 is the 221st day of the year in the Gregorian Calendar (222nd in leap years), with 144 days remaining. ... 1794 was a common year starting on Wednesday (see link for calendar). ... April 13 is the 103rd day of the year in the Gregorian calendar (104th in leap years). ... 1865 is a common year starting on Sunday. ... Zoology (Greek zoon = animal and logos = word) is the biological discipline which involves the study of animals. ...

Valenciennes was born in Paris, and studied under Georges Cuvier. Valenciennes' study of parasitic worms in humans made an important contribution to the study of parasitology. He also carried out diverse systematic classifications, linking fossil and current species. He worked with Cuvier on the 22-volume Histoire naturelle des poissons (Natural History of Fish) (1828-1848), carrying on alone after Cuvier died in 1832. The Eiffel Tower has become a symbol of Paris throughout the world. ... Georges Cuvier Baron Georges Léopold Chrétien Frédéric Dagobert Cuvier (August 23, 1769 - May 13, 1832) was a French naturalist and zoologist. ... Parasitology is the study of parasites, their hosts, and the relationship between them. ...