Iniidae is a family of river dolphins containing the genus Inia, whose single recognized species, the Amazon river dolphin, is endemic to the freshwater river systems of South America, including the Amazon and Orinoco basins. Members of the family are among the largest river dolphins, distinguished from marine dolphins by long narrow snouts, flexible necks, and reduced dorsal fins adapted for maneuvering through flooded forest and river channels.
Facts
Taxonomic Rank Scientific Name Geographic DistributionAll currently extant species of Iniidae are native to the river basins of South America 1 Defining CharacteristicsBecause their cervical vertebra are movable, the necks of Iniidae are flexible 1 Identification
Distinguishing Appearancehighly reduced or absent dorsal fins 1 Sources
1. Iniidae - Wikipedia
Introduction, sentence 1 (rank clause)
Iniidae is a family of freshwater river dolphins containing one living genus, Inia
Introduction, sentence 1 (name clause)
Iniidae is a family of freshwater river dolphins containing one living genus, Inia
Introduction, distribution sentence
All currently extant species of Iniidae are native to the river basins of South America
Morphology section, neck sentence
Because their cervical vertebra are movable, the necks of Iniidae are flexible
Morphology section, dorsal fin clause
highly reduced or absent dorsal fins
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