In 1840–48 he is credited with uncovering 2000 fossils at various excavation sites in France.
As a taxonomist, he described Acerodon, a genus of Old World fruit bats, and Hemigalus, a monospecific genus associated with the banded palm civet, Hemigalus derbyanus.
He also classified the following mammal species:
Golden Atlantic tree-rat, Phyllomys blainvilii.
Western brush wallaby, Macropus irma.In 1839 Jules Bourcier named the rufous-shafted woodstar, Chaetocercus jourdanii, after him.
It is sometimes referred to as "Jourdan's woodstar".