Chitonidae
Encyclopedia
Chitonidae is a family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of chiton
Chiton
Chitons are small to large, primitive marine molluscs in the class Polyplacophora.There are 900 to 1,000 extant species of chitons in the class, which was formerly known as Amphineura....

s or polyplacophorans, marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 mollusks whose shell is composed of eight articulating plates or valves. There are fifteen extant genera in three subfamilies
Familia
Familia was the name of a Polish political party led by the Czartoryski magnates and families allied with them, and formed toward the end of the reign of King August II...

.

Subfamilies and genera

Subfamilies and genera within the family Chitonidae include:

(Fossil taxa reference:
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