Not to be confused with caiman lizards (a kind of lizard) or blue iguanas, which are sometimes called Grand Cayman iguanas.
For the genus, see Caiman (genus). For other uses, see Caiman (disambiguation).
Caimans
Temporal range: Paleocene–Present, 66–0 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
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Pg
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Yacare caiman, Caiman yacare
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Reptilia
Clade:
Archosauromorpha
Clade:
Archosauriformes
Order:
Crocodilia
Family:
Alligatoridae
Subfamily:
Caimaninae Brochu, 1999
Type genus
Caiman
Spix, 1825
Genera and species
See below
A caiman (/ˈkeɪmən/; also cayman as a variant spelling[1] from Taíno kaiman[2][additional citation(s) needed]) is an alligatorid belonging to the subfamily Caimaninae, one of two primary lineages within the Alligatoridae family, the other being alligators. Caimans are native to Central and South America and inhabit marshes, swamps, lakes, and mangrove rivers. They have scaly skin and live a fairly nocturnal existence. They are relatively small-sized crocodilians with an average maximum weight of 6 to 40 kg (13 to 88 lb) depending on species, with the exception of the black caiman (Melanosuchus niger), which can grow more than 4 m (13 ft) in length and weigh in excess of 1,000 kg (2,200 Ib). The black caiman is the largest caiman species in the world and is found in the slow-moving rivers and lakes that surround the Amazon basin. The smallest species is the Cuvier's dwarf caiman (Paleosuchus palpebrosus), which grows to 1.2 to 1.5 m (3.9 to 4.9 ft) long. There are six different species of caiman found throughout the watery jungle habitats of Central and Southern America. The average length for most of the other caiman species is about 2 to 2.5 m (6.6 to 8.2 ft) long.
Caimans are distinguished from alligators, their closest relatives, by a few defining features: a lack of a bony septum between the nostrils, ventral armor composed of overlapping bony scutes formed from two parts united by a suture, and longer and sharper teeth than alligators, plus caimans tend to be more agile and crocodile-like in their movements.[3] The calcium rivets on caiman scales make their hides stiffer.
Several extinct forms are known, including Purussaurus, a giant Miocene genus that grew to 12 m (39 ft) and the equally large Mourasuchus, which had a wide duck-like snout.[4]
^Patte, Marie-France (2010). "Arawak vs. Lokono. What's in a name?". In Faraclas, Nicholas (ed.). In a Sea of Heteroglossia: Pluri-Lingualism, Pluri-Culturalism, and Pluri-Identification in the Caribbean. Curaçao: Fundashon pa Planifikashon di Idioma & Universiteit van de Nederlandse Antillen. p. 80. ISBN 978-99904-2-300-6.
^Guggisberg, C.A.W. (1972). Crocodiles: Their Natural History, Folklore, and Conservation. David & Charles. p. 195. ISBN 978-0-7153-5272-4.
^Brochu, C. A. (1999). "Phylogenetics, Taxonomy, and Historical Biogeography of Alligatoroidea". Society of Vertebrate Paleontology Memoir. 6: 9–100. doi:10.2307/3889340. JSTOR 3889340.
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