An alternate scientific family name sometimes used for sea turtles and certain freshwater turtles, variant of the more common Chelonidae.
A taxonomic variant combining Greek 'chelone' with a doubled '-iidae' suffix, representing an older or regional classification convention in scientific naming.
Taxonomists sometimes use different family names for the same animals, which can confuse students—this is why learning the most current classification system (Chelonidae) is important!
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