Aulus Oken (Nahant, Mass., 3 July 1863), Jacques Burkhardt

Taxonomic classification: animalia--pharidae--aulus oken. Common name: bivalve mollusk. Date: 3 July 1863. Dimensions: 26 x 18 cm.. Medium: pencil on paper. Collection: Harvard University. Aulus Oken (Nahant, Mass., 3 July 1863)