| Cyclura cornuta onchiopsis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Iguania |
| Family: | Iguanidae |
| Genus: | Cyclura |
| Species: | |
| Subspecies: | †C. c. onchiopsis |
| Trinomial name | |
| †Cyclura cornuta onchiopsis | |
| Synonyms | |
Cyclura cornuta onchiopsis, the Navassa Island iguana, was a subspecies of rhinoceros iguana that was found on the Caribbean island of Navassa. [5]
Its specific name, cornuta, is the feminine form of the Latin adjective cornutus, meaning "horned" and refers to the horned projections on the snouts of males of the species. The species was first described by American herpetologist Edward Drinker Cope in 1885. [2]
In 1885, Cope first described the lizard as two species in the same paper: C. onchiopsis and C. nigerrima, due to the animal's almost black coloration. A year later he renamed it as C. onchiopsis. [2] [6] Herpetologists Albert Schwartz and Richard Thomas officially reclassified it as a subspecies of C. cornuta 90 years later, based on the writings of Thomas Barbour and Robert Mertens, yet presented numerous data relating to scale count that suggested otherwise. [7] In 1977, Schwartz and Carey wrote “It is even conceivable that onchiopsis should be considered a species distinct from C. cornuta on the basis of this single character (distinctly smaller dorsolateral scales) (plus perhaps other modalities), but to do so would obscure its obvious affinities with the latter species.” [8] The IUCN still considers the iguana to be its own species C. onchiopsis.
In 1999, Dr Robert Powell wrote that, based on these prior studies, this animal should be elevated to full species status, distinct from C. cornuta. [9]
These lizards varied in length from 60 to 136 cm (24 to 54 in), with skin colors ranging from a steely gray to a dark green and even brown, and possessed a bony-plated pseudo-horn or outgrowth which resembled the horn of a rhinoceros. [10]
Navassa Island was visited in 1966 and 1967 and no animals were present. [11] An entomologist visited the island again in 1986 and saw no signs of any iguanas, although he was not specifically looking for them. [11] An extensive search again in 1999 failed to find any iguanas. [9] Military occupation of the island prior to the 1960s may have been responsible for its demise, or years of mining guano for fertilizer; the introduction of feral dogs, goats, and rats may have also been to blame. [8] [10] [12] Dr Robert Powell's research while at the Department of Natural Sciences, Avila College, Kansas City, Missouri, suggests that the iguanas disappeared before the introduction of feral species, as a result of habitat change or hunting by man. [9] Noted herpetoculturist David Blair maintains that some of these animals may remain in captivity somewhere in the world, but admits they would be very aged specimens. [9] [11]
Navassa Island is a small uninhabited island in the Caribbean Sea. Located northeast of Jamaica, south of Cuba, and 40 nautical miles west of Jérémie on the Tiburon Peninsula of Haiti, it is subject to an ongoing territorial dispute between Haiti and the United States, which administers the island through the U.S. Fish and Wildlife Service.
The blue iguana, also known as the Grand Cayman ground iguana, Grand Cayman blue iguana or Cayman Island rock iguana, is an endangered species of lizard which is endemic to the island of Grand Cayman. It was previously considered to be a subspecies of the Cuban iguana, Cyclura nubila, but in a 2004 article Frederic J. Burton reclassified it as a separate species because according to him the genetic differences discovered four years earlier between the different C. nubila populations warranted this interpretation. The blue iguana is one of the longest-living species of lizard.
The Mona ground iguana is a critically-endangered species of rock iguana, endemic to Mona Island, Puerto Rico. It is one of the island nation’s few large land animals, and it is the largest endemic terrestrial lizard in the country, and one of the biggest rock iguanas within the Antilles. It was previously considered a subspecies of the rhinoceros iguana.
Cochran's croaking gecko, also commonly known as Cochran's Caribbean gecko and the Navassa gecko, is a species of lizard in the family Sphaerodactylidae. The species was described in 1931 by Chapman Grant and named after notable American herpetologist and artist Doris Mable Cochran. The species received one of its common names from the loud croaking call of the male during the mating period.
The rhinoceros iguana is an endangered species of iguana that is endemic to the Caribbean island of Hispaniola and its surrounding islands. A large lizard, they vary in length from 60 to 136 centimetres, and skin colours range from a steely grey to a dark green and even brown. Their name derives from the bony-plated pseudo-horn or outgrowth which resembles the horn of a rhinoceros on the iguana's snout. It is known to coexist with the Ricord's iguana ; the two species are the only taxa of rock iguana to do so.
Tropidophis bucculentus, also known commonly as the Navassa Island dwarf boa, is a nonvenomous dwarf boa species endemic to Navassa Island in the Caribbean Sea. There are no subspecies that are recognized as being valid.
The northern Bahamian rock iguana is a species of lizard of the genus Cyclura that is found on Andros Island and the Exuma islands in the Bahamas. Its status on the IUCN Red List is vulnerable, with a wild population of less than 5,000 animals.
The Cuban rock iguana, also known as the Cuban ground iguana or Cuban iguana, is a species of lizard of the iguana family. It is the second largest of the West Indian rock iguanas, one of the most endangered groups of lizards. A herbivorous species with a thick tail and spiked jowls, it is one of the largest lizards in the Caribbean.
Cyclura ricordii, also known as Ricord's ground iguana or Ricord's rock iguana, is an endangered species of medium-sized rock iguana, a large herbivorous lizard. It is endemic to the island of Hispaniola. It is known to coexist with the nominate subspecies of the rhinoceros iguana ; the two species are the only taxa of rock iguana to do so. The natural habitats of its three subpopulations are hot, dry, wooded savanna on limestone with access to soil and sandy flats in southern Hispaniola. It is threatened by predation by introduced predators and habitat loss, due to overgrazing and charcoal manufacture.
Cyclura rileyi, commonly known as the Bahamian rock iguana or the San Salvador rock iguana, is a critically endangered species of lizard in the family Iguanidae. The species is native to three island groups in the Bahamas, and is in decline due to habitat encroachment by human development and predation by feral dogs and cats. There are three subspecies: the Acklins ground iguana, the White Cay iguana, and the nominotypical subspecies.
The Navassa curly-tailed lizard or Navassa curlytail lizard is an extinct lizard species from the family of curly-tailed lizard (Leiocephalidae). It is known only from the holotype, a female specimen from which it was described in 1868. A possible second specimen which was collected by Rollo Beck in 1917 was instead identified as a Tiburon curly-tailed lizard by herpetologist Richard Thomas in 1966.
The Andros Island iguana or Andros iguana is an endangered subspecies of Northern Bahamian rock iguana of the genus Cyclura that is found on Andros Island on the western edge of Grand Bahama. Its status is Endangered, with a wild population of 3,500 animals, and it can be found on the IUCN Red List.
Cyclura carinata bartschi, commonly known as Bartsch's iguana or the Booby Cay iguana, is a subspecies of lizard in the family Iguanidae. The subspecies is endemic to a single cay, Booby Cay, in The Bahamas.
Cyclura nubila caymanensis, the Lesser Caymans iguana, Cayman Brac iguana, Cayman Island brown iguana or Sister Isles iguana, is a critically endangered subspecies of the Cuban iguana. It is native to two islands to the south of Cuba: Cayman Brac and Little Cayman, which are also known as the Sister Isles due to their similar shapes and close proximity to each other. The population of this subspecies has been impacted by habitat encroachment by human development and is likely being destroyed due to predation by cats, the population on Cayman Brac has remained particularly small for decades.
Cyclura cychlura figginsi, known by the common name of guana and sometimes called the Exuma Island iguana in the international literature, is a subspecies of the northern rock iguana, C. cychlura, that is found on the Exuma island chain in the Bahamas with an estimated wild population of 1,300 animals in 2004, it has been listed on the IUCN Red List as critically endangered.
Cyclura rileyi cristata, the White Cay iguana or Sandy Cay rock iguana, is a critically endangered subspecies of lizard of the genus Cyclura native to a single cay in the Bahamas: White Cay located in the Southern Exumas.
Cyclura is a genus of lizards in the family Iguanidae. Member species of this genus are commonly known as "cycluras" and only occur on islands in the West Indies. Rock iguanas have a high degree of endemism, with a single species or subspecies originating on an individual island.
Cyclura pinguis, the Anegada rock iguana, Anegada ground iguana or stout iguana, is a critically endangered species of lizard of the genus Cyclura belonging to the family Iguanidae. The species can be found exclusively in the islands of Anegada and Guana. Historically, it inhabited the islands of Puerto Rico and Saint Thomas; however, the animal's original range has been greatly diminished over prehistory.
Julia's ground snake is a species of snake in the family Colubridae. The species is found in the Caribbean, on the Lesser Antilles islands of Dominica and Guadeloupe.
The Hispaniola racer or Hispaniolan brown racer is a snake that is endemic to the Caribbean island of Hispaniola. It is monotypic in the genus Haitiophis.
