Georg Haeckel

Corals. Hexacoralla Ernst Haeckel

Corals. Tetracoralla Ernst Haeckel

Prof. Haeckel Ernst Haeckel

Corals. Hexacoralla Ernst Haeckel

Microorganisms. Flagellata Ernst Haeckel

Algae. Diatomea Ernst Haeckel

Microbiology book plate Anonymous

Microorganisms. Peridinea Ernst Haeckel

Glass sponges. Hexactinellae Ernst Haeckel

Marine invertebrates. Siphonophorae Ernst Haeckel

Illustration of mollusk. Acephala Ernst Haeckel

Illustration of mollusk. Acephala Ernst Haeckel

Microorganisms. Phaeodaria Ernst Haeckel

Microorganisms. Flagellata Ernst Haeckel

Moths. Tineida Ernst Haeckel

Corals in the subclass Octocorallia. Gorgonida Ernst Haeckel

Algae in the genus Pediastrum. Melethallia Ernst Haeckel

Red algae. Florideae Ernst Haeckel

Microorganisms. Peridinea Ernst Haeckel

Microorganisms. Spumellaria Ernst Haeckel

Illustration of mollusk. Acephala Ernst Haeckel

Liverworts. Hepaticae Ernst Haeckel

Microorganisms. Phaeodaria Ernst Haeckel

Nepenthaceae Ernst Haeckel

Algae. Fucoideae Ernst Haeckel

Starfish and details of starfish anatomy. Ophiodea Ernst Haeckel

Algae. Diatomea Ernst Haeckel

Microorganisms. Thalamophora Ernst Haeckel

Algae. Diatomea Ernst Haeckel

Algae. Diatomea Ernst Haeckel

Algae. Fucoideae Ernst Haeckel

Illustration showing a variety of mollusks. Acephala Ernst Haeckel

Illustration showing a variety of mollusks. Acephala Ernst Haeckel

Microorganisms. Ciliata Ernst Haeckel

Microorganisms. Spyroidea Ernst Haeckel

Microorganisms. Thalamophora Ernst Haeckel