members of the Lesser Antillean radiation survived to more recent times, perhaps remaining widespread until after European colonization. The last surviving members of the Lesser Antillean radiation, L. herminieri of Guadeloupe and L. roquetus of Martinique, went extinct during the early-mid 19th century. General anatomy The curly-tailed lizards vary in size depending on species, but typically are approximately in snout-to-vent length. These lizards have no femoral pores, pterygoid teeth, or palatine teeth. Additionally, these lizards are observed to have overlapping scales. Behavior The curly-tailed lizards mostly forage on arthropods such as insects, but also commonly take flowers and fruits. Large individuals will eat small vertebrates, including anoles. As suggested by their name, most species of this family often lift their tail and curl it. This is done both when a potential predator is present and when not present, although in some curly-tailed lizard species it increases when a predator is present. It shows the fitness of the lizard to a would-be predator and—in the case of an attack—draws attention to the tail, which increases the lizard's chance of escaping. Although it has been suggested that it also functions as a territorial display, studies have been unable to find support for this, as the tail curling does not vary when another member of the same species is present. Conservation status and extinctions The conservation status of the species in this family varies greatly. Several species, for example Leiocephalus carinatus, are common and widespread. Others are rare and highly threatened, especially those restricted to a single small island or a single location on a larger island, like the critically endangered Leiocephalus (barahonensis) altavelensis from Alto Velo Island and critically endangered Leiocephalus onaneyi from Guantánamo Province in Cuba. Primary threats to their survival are habitat loss (for example, expanding agriculture, charcoal production and grazing goats) and introduced predators (for example, small Indian mongoose). Several species of Leiocephalus are already extinct, including all of the Jamaican, Puerto Rican and Lesser Antillean members of the genus. Some of these are only known from fossil or subfossil remains and became extinct in the Pleistocene or pre-Columbian era, but others such as two Lesser Antillean species and one from Navassa survived until comparatively recently, during the 19th century. Leiocephalus is the only known squamate genus to be entirely wiped out from the Lesser Antilles following European colonization; other reptilian genera that have also seen significant extirpations in