Context: Manatees (family Trichechidae, genus Trichechus) are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows. There are three accepted living species of Trichechidae, representing three of the four living species in the order Sirenia: the Amazonian manatee ("Trichechus inunguis"), the West Indian manatee ("Trichechus manatus"), and the West African manatee ("Trichechus senegalensis"). They measure up to long, weigh as much as , and have paddle-like flippers. The name "manatí" comes from the Spanish "manatí", derived from the Caribbean word sometimes cited as "manattouï". The etymology is dubious, with connections having been made to Latin "manus" (hand), and to a word used by the Taíno, a pre-Columbian people of the Caribbean, meaning "breast". Manatees are occasionally called sea cows, as they are slow plant-eaters, peaceful and similar to cows on land. They often graze on water plants in tropical seas. , The Dugongidae are a family in the order of Sirenia. The family has one surviving species, the dugong ("Dugong dugon"), one recently extinct species, Steller's sea cow ("Hydrodamalis gigas"), and a number of extinct genera known from fossil records., Cuba, officially the Republic of Cuba, is a country comprising the island of Cuba as well as Isla de la Juventud and several minor archipelagos. Cuba is located in the northern Caribbean where the Caribbean Sea, the Gulf of Mexico, and the Atlantic Ocean meet. It is south of both the U.S. state of Florida and the Bahamas, west of Haiti, and north of Jamaica. Havana is the largest city and capital; other major cities include Santiago de Cuba and Camagüey. Cuba is the largest island in the Caribbean, with an area of , and the second-most populous after Hispaniola, with over 11 million inhabitants., Sirenia, commonly referred to as sea cows, is an order of fully aquatic, herbivorous mammals that inhabit swamps, rivers, estuaries, marine wetlands, and coastal marine waters. Sirenia comprises the families Dugongidae (the dugong), Trichechidae (manatees), Protosirenidae (Eocene sirenians), and Prorastomidae (terrestrial sirenians). There are currently four extant species of sirenians. Sirenians are classified in the clade Paenungulata, alongside the elephants and the hyraxes, and evolved in the Eocene 50 million years ago. The Dugongidae diverged from the Trichechidae in the late Eocene or early Oligocene., Steller's sea cow ("Hydrodamalis gigas") is an extinct species of sirenian that was found exclusively around the Commander Islands, which is situated in the Bering Sea between Alaska and Russia. Its closest living relative is the dugong ("Dugong dugon"), which is the sole surviving member of the Dugongidae of which Steller's sea cow was also a part of. They were among the largest mammals other than whales to have existed into the Holocene epoch, reaching weights of and lengths of ., The dugong (; "Dugong dugon") is a medium-sized marine mammal. It is one of four living species of the order Sirenia, which also includes three species of manatees. It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow ("Hydrodamalis gigas"), was hunted to extinction in the 18th century. The dugong is the only strictly marine herbivorous mammal., Prorastomidae is a taxonomic family of extinct animals from Jamaica , related to the extant manatees and dugong . The family includes two genera : Pezosiren Prorastomus, Jamaica is an island country situated in the Caribbean Sea, consisting of the third-largest island of the Greater Antilles. The island, in area, lies about south of Cuba, and west of Hispaniola (the island containing the nation-states of Haiti and the Dominican Republic). Jamaica is the fourth-largest island country in the Caribbean, by area., The Dominican Republic is a sovereign state occupying the eastern two-thirds of the island of Hispaniola, in the Greater Antilles archipelago in the Caribbean region. The western one-third of the island is occupied by the nation of Haiti, making Hispaniola one of two Caribbean islands, along with Saint Martin, that are shared by two countries. The Dominican Republic is the second-largest Caribbean nation by area (after Cuba) at , and 3rd by population with 10.08 million people, of which approximately three million live in the metropolitan area of Santo Domingo, the capital city., Hispaniola (Spanish: "La Española"; Latin: "Hispaniola"; Taíno: "Haiti") is the 22nd-largest island in the world, located in the Caribbean island group, the Greater Antilles. It is the second largest island in the Caribbean after Cuba, and the tenth most populous island in the world., Subject: prorastomidae, Relation: parent_taxon, Options: (A) area (B) dugong (C) dugongidae (D) hydrodamalis (E) la (F) mammal (G) manatee (H) prorastomidae (I) sirenia (J) trichechidae
Output: sirenia