Friedrich Sigismund Leuckart

Friedrich Andreas Sigismund Leuckart was a German doctor and naturalist.
He was born in Helmstedt in Lower Saxony and studied medicine at the University of Göttingen. From 1816 he made several voyages of exploration.
In 1823, Leuckart was appointed privatdozent at the University of Heidelberg and taught comparative anatomy, zoology, and veterinary science as an associate professor starting in 1829. In 1832 he moved to Freiburg as a full professor and continued teaching there.
Leuckart wrote works on marine invertebrates, in particular, Versuch einer naturgemaessen Eintheilung der Helminthen and Einleitung in die Allgemeinen Naturgeschichte.
Leuckart is commemorated by the parasitic worm species Calliobothrium leuckartii.
He was the uncle of the zoologist Rudolf Leuckart.