Naviculales

order of diatoms Naviculales (Naviculales) is an order comprising closely related families of organisms. It contains 13 families with 303 known species. Key family groups include Amphipleuraceae, Berkeleyaceae, Brachysiraceae, Diadesmidaceae, Diploneidaceae, and Naviculaceae. Among its members, 1 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Bacillariophyceae (Bacillariophyceae).