Cryptophialus minutus

Cryptophialus minutus
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Thecostraca
Subclass: Cirripedia
Order: Cryptophialida
Family: Cryptophialidae
Genus: Cryptophialus
Species:
C. minutus
Binomial name
Cryptophialus minutus
Darwin, 1854

Cryptophialus minutus is a species of barnacle. One cluster in particular, dubbed Mr. Arthrobalanus, is notable for being the impetus for Charles Darwin's "Cirripedia project" and obsession with barnacles.