Phyla:
• Acanthocephala
• Annelida (segmented worms)
• Archaeocyatha
• Arthropoda (arthropods)
• Brachiopoda (brachiopods: lamp shells)
• Bryozoa (bryozoans; also Ectoprocta, Polyzoa)
• Cephalorhyncha
• Chaetognatha
• Chordata (chordates)
• Cnidaria
• Coelenterata
• Conodonta (fossil only)
• Conulariida (fossil only)
• Ctenophora (comb jellies)
• Cycliophora
• Echinodermata (echinoderms)
• Echiura
• Entoprocta (also Kamptozoa)
• Gastrotricha
• Gnathostomulida
• Hemichordata
• Kinorhyncha
• Lobopodia
• Loricifera
• Mesozoa
• Mollusca (mollusks)
• Nematoda (roundworms)
• Nematomorpha
• Nemertea (proboscis worms)
• Nemertinea (also Rhynchocoela)
• Onychophora
• Pentastomida
• Phoronida (phoronids)
• Placozoa
• Platyhelminthes (flatworms)
• Pogonophora
• Porifera (sponges)
• Priapulida
• Protozoa
• Rotifera (rotifers; also Rotatoria)
• Sipuncula
• Vestimentifera

A gorgeously illustrated alphabet book by Australian artist Graeme Base, of the 'cram-lots-of-things-beginning-with-this-letter-into-each-picture' variety. Exceptionally beautiful, even if it does pale in comparison to Mike Wilks' The Ultimate Alphabet.