In 1837, he issued the "Prodrome" of a monograph on the recent and fossil Echinodermata, the first part of which appeared in 1838; in 1839–40, he published two quarto volumes on the fossil Echinoderms of Switzerland; and in 1840–45 he issued his Études critiques sur les mollusques fossiles ("Critical Studies on Fossil Mollusks").
Aastal 1837 avaldas ta monograafia fossiilsetest ja retsentsetest okasnahksetest "Prodrome", mille esimene osa ilmus 1838; aastatel 1839–1840 avaldas ta kaks kvartkaustas köidet Šveitsi fossiilsetest okasnahksetest; ning 1840–1845 ilmus tema teos "Études critiques sur les mollusques fossiles" ("Kriitilised uurimused fossiilsetest limustest").