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Heloderma
''Heloderma'' is a genus of toxicoferan lizards that contains five species, all of which are venomous. It is the only extant genus of the family Helodermatidae. Description The genus ''Heloderma'' contains the Gila monster (''H. suspectum'') and four species of beaded lizards. Their eyes are immobile and fixed in their heads. The Gila monster is a large, stocky, mostly slow-moving reptile that prefers arid deserts. Beaded lizards are seen to be more agile and seem to prefer more humid surroundings. The tails of all species of ''Heloderma'' are used as fat-storage organs. The scales of the head, back, and tail are bead-like, containing osteoderms for better protection. The scales of the belly are free from osteoderms. Most species are dark in color, with yellowish or pinkish markings. Venom The venom glands of ''Heloderma'' are located at the end of the lower jaws, unlike snakes' venom glands, which are located behind the eyes. Also, unlike snakes, the Gila monster and beaded li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heloderma Exasperatum Exposé Au Palais De La Découverte En Août 2019
''Heloderma'' is a genus of toxicofera Toxicofera (Latin for "toxin-bearers") is a proposed clade of squamata, scaled reptiles (squamates) that includes the snake, Serpentes (snakes), Anguimorpha (monitor lizards, Helodermatidae, beaded lizards, and alligator lizards) and Iguania (igu ...n lizards that contains five species, all of which are venomous. It is the only extant genus of the family Helodermatidae. Description The genus ''Heloderma'' contains the Gila monster (''H. suspectum'') and four species of beaded lizards. Their eyes are immobile and fixed in their heads. The Gila monster is a large, stocky, mostly slow-moving reptile that prefers arid deserts. Beaded lizards are seen to be more agile and seem to prefer more humid surroundings. The tails of all species of ''Heloderma'' are used as fat-storage organs. The scales of the head, back, and tail are bead-like, containing osteoderms for better protection. The scales of the belly are free from osteoderms. Most species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heloderma Horridum
''Heloderma'' is a genus of toxicoferan lizards that contains five species, all of which are venomous. It is the only extant genus of the family Helodermatidae. Description The genus ''Heloderma'' contains the Gila monster (''H. suspectum'') and four species of beaded lizards. Their eyes are immobile and fixed in their heads. The Gila monster is a large, stocky, mostly slow-moving reptile that prefers arid deserts. Beaded lizards are seen to be more agile and seem to prefer more humid surroundings. The tails of all species of ''Heloderma'' are used as fat-storage organs. The scales of the head, back, and tail are bead-like, containing osteoderms for better protection. The scales of the belly are free from osteoderms. Most species are dark in color, with yellowish or pinkish markings. Venom The venom glands of ''Heloderma'' are located at the end of the lower jaws, unlike snakes' venom glands, which are located behind the eyes. Also, unlike snakes, the Gila monster and beaded li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heloderma Suspectum
The Gila monster (''Heloderma suspectum'', ) is a species of venomous lizard native to the Southwestern United States and the northwestern Mexican state of Sonora. It is a heavy, slow-moving reptile, up to long, and it is the only venomous lizard native to the United States. Its venomous close relatives, the four beaded lizards (all former subspecies of '' Heloderma horridum'') inhabit Mexico and Guatemala. The Gila monster is sluggish in nature, so it is not generally dangerous and very rarely poses a real threat to humans. However, it has a fearsome reputation and is sometimes killed despite the species being protected by state law in Arizona. History The name "Gila" refers to the Gila River Basin in the U.S. states of Arizona and New Mexico, where the Gila monster was once plentiful. ''Heloderma'' means "studded skin", from the Ancient Greek words (), "the head of a nail or stud", and (), "skin". The species epithet ''suspectum'' comes from the describer, paleontolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gila Monster
The Gila monster (''Heloderma suspectum'', ) is a species of venomous lizard native to the Southwestern United States and the northwestern Mexico, Mexican state of Sonora. It is a heavy, slow-moving reptile, up to long, and it is the only venomous lizard native to the United States. Its venomous close relatives, the four Mexican beaded lizard, beaded lizards (all former subspecies of ''Heloderma horridum'') inhabit Mexico and Guatemala. The Gila monster is sluggish in nature, so it is not generally dangerous and very rarely poses a real threat to humans. However, it has a fearsome reputation and is sometimes killed despite the species being protected by state law in Arizona. History The name "Gila" refers to the Gila River Basin in the U.S. states of Arizona and New Mexico, where the Gila monster was once plentiful. ''Heloderma'' means "studded skin", from the Ancient Greek words (), "the head of a nail or stud", and (), "skin". The species epithet ''suspectum'' comes fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heloderma Charlesbogerti
The Guatemalan beaded lizard (''Heloderma charlesbogerti''), also called commonly the Motagua Valley beaded lizard, is a highly endangered species of beaded lizard, a venomous lizard in the family Helodermatidae. The species is endemic to the dry forests of the Motagua Valley in southeastern Guatemala, an ecoregion known as the Motagua Valley thornscrub. It is the only allopatric beaded lizard species, separated from the nearest population (''H. alvarezi)'' by of unsuitable habitat. The Guatemalan beaded lizard is the rarest and most endangered species of beaded lizard, and fewer than 200 individuals of this animal are believed to exist in the wild, making it one of the most endangered lizards in the world. In 2007, it was transferred from Appendix II to Appendix I of CITES due to its critical conservation status.Convention on International Trade in Endangered Species of Wild Fauna and Flora. 2007. Resume of the 14th Convention of the Parts. The Hague. The Netherlands. Taxono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heloderma Exasperatum
The Rio Fuerte beaded lizard (''Heloderma exasperatum'') is a venomous species of beaded lizard in the Family (biology), family Helodermatidae. It is found in the tropical forests and shrublands of western Mexico, specifically around the Fuerte River, Rio Fuerte and Rio Mayo basins. It is often found in or near abandoned mammal burrows and sources of water. Geographic range ''H. exasperatum'' is found in southwestern Chihuahua (state), Chihuahua and southern Sonora, Mexico, up to an altitude of . Description As an adult, the Rio Fuerte beaded lizard ranges from 60 to 90 cm (23.6 to 35.4 in) in total length (including tail). It can weigh up to 4 kg (8.8 lb). It is very similar to the Mexican beaded lizard in appearance and size. Diet ''H. exasperatum'' feeds mainly on reptile eggs, but also eats bird eggs, and nestlings of birds and mammals. Reproduction ''H. exasperatum'' is Oviparity, oviparous. Taxonomy The Rio Fuerte beaded lizard is a member of the family Helodermatidae. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helodermatidae
The Helodermatidae or beaded lizards are a small family of lizards endemic to North America today, mainly found in the Isthmus of Tehuantepec in Oaxaca, the central lowlands of Chiapas, on the border of Guatemala, and in the Nentón River Valley, though they were formerly more widespread in the ancient past. Traditionally, the Gila monster and the Mexican beaded lizard were the only species recognized, although the latter has recently been split into several species. While the fossil record of this family may date back to as far as the Cretaceous with genera such as '' Primaderma'' and '' Paraderma'' of North America, the oldest definitive members of the Helodermatidae date to the Early Oligocene The Rupelian is, in the geologic timescale, the older of two age (geology), ages or the lower of two stage (stratigraphy), stages of the Oligocene epoch (geology), Epoch/series (stratigraphy), Series. It spans the time between . It is preceded b ..., with '' Lowesaurus matthewi'' fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heloderma Texana
''Heloderma texana'' is an extinct species of heloderm lizard known from Miocene sediments in Big Bend National Park. It is the oldest fossil record of the genus ''Heloderma ''Heloderma'' is a genus of toxicoferan lizards that contains five species, all of which are venomous. It is the only extant genus of the family Helodermatidae. Description The genus ''Heloderma'' contains the Gila monster (''H. suspectum'') a ...'' in North America. References Helodermatidae Miocene reptiles of North America {{paleo-lizard-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heloderma Alvarezi
''Heloderma alvarezi'', the Chiapan beaded lizard or black beaded lizard, is a species of lizard of the Helodermatidae family. It is found in Mexico and Guatemala Guatemala, officially the Republic of Guatemala, is a country in Central America. It is bordered to the north and west by Mexico, to the northeast by Belize, to the east by Honduras, and to the southeast by El Salvador. It is hydrologically b .... References {{Taxonbar, from=Q2322803 Helodermatidae Reptiles described in 1956 Reptiles of Mexico Reptiles of Guatemala Venomous lizards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxicofera
Toxicofera (Latin for "toxin-bearers") is a proposed clade of squamata, scaled reptiles (squamates) that includes the snake, Serpentes (snakes), Anguimorpha (monitor lizards, Helodermatidae, beaded lizards, and alligator lizards) and Iguania (iguanas, Agama (lizard), agamas, and chameleons). Toxicofera contains about 4,600 species (nearly 60%) of extant taxon, extant Squamata. It encompasses all Venom (poison), venomous reptile species, as well as numerous related non-venomous species. There is little morphological evidence to support this grouping; however, it has been recovered by all molecular analyses as of 2012. Cladistics Toxicofera combines the following groups from traditional Scientific classification, classification: * Suborder Serpentes (snakes) * Suborder Iguania (iguanas, agamid lizards, chameleons, etc.) * Suborder Anguimorpha, consisting of: ** Family Varanidae (monitor lizards) ** Family Lanthanotidae (earless monitor lizard) ** Family Anguidae (alligator lizard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snake
Snakes are elongated limbless reptiles of the suborder Serpentes (). Cladistically squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales much like other members of the group. Many species of snakes have skulls with several more joints than their lizard ancestors and relatives, enabling them to swallow prey much larger than their heads ( cranial kinesis). To accommodate their narrow bodies, snakes' paired organs (such as kidneys) appear one in front of the other instead of side by side, and most only have one functional lung. Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca. Lizards have independently evolved elongate bodies without limbs or with greatly reduced limbs at least twenty-five times via convergent evolution, leading to many lineages of legless lizards. These resemble snakes, but several common groups of legless lizards have eyelids and external ears, which snakes lack, althoug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
