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Paleosuchus palpebrosus (CUVIER, 1807)

IUCN Red List - Paleosuchus palpebrosus - Least Concern, LR
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Higher TaxaAlligatoridae, Crocodylia, crocodiles (alligators)
Subspecies 
Common NamesE: Dwarf caiman, Cuvier's smooth-fronted caiman
Local names: Jacaré pagua, Cachirre, Cocodrilo, Musky caiman.
G: Brauen-Glattstirnkaimans
Portuguese: Cocodrilo, Crocodilo, Jacaré-Anão, Jacaré-Coroa, Jacaré-do-Buraco, Jacaré-Enferrujado, Jacaré-Ferro, Jacaré-Mirim, Jacaré-Paguá, Jacaré-Pedra, Jacaré-Preto, Jacaré-Una, Jacaré-Vermelho, Pretinho, Tiritiri 
SynonymCrocodilus palpebrosus CUVIER 1807: 35
Jacaretinga moschifer SPIX 1825 (fide DUMÉRIL & BIBRON 1836: 69)
Champsa gibbiceps NATTERER 1840: 324
Champsa palpebrosa — WAGLER 1830: 140
Alligator palpebrosus — DUMÉRIL & BIBRON 1836: 67
Aligator palpebrosus — BRÜHL 1874
Paleosuchus palpebrosus — KING & BURKE 1989
Paleosuchus palpebrosus — GORZULA & SEÑARIS 1999
Paleosuchus palpebrosus — CACCIALI et al. 2016
Paleosuchus palpebrosus — HERNÁNDEZ-RANGEL et al. 2024 
DistributionBolivia (Beni), Brazil (Goias, Acre, Piauí, Pernambuco, Paraíba, Roraima etc.), Colombia, Ecuador, French Guiana, Guyana ?, NE Paraguay, Peru, Suriname, Venezuela, Trinidad

Type locality: "Cayenne," French Guiana.  
Reproductionoviparous. 
TypesSyntypes: MNHN-RA 2145, MNHN-RA 2147, MNHN-RA 2149, MNHN-RA 7525, MNHN-RA 7527 and MNHN-RA 7530 (holotype: MNHN-RA 7530, according to Vaillant 1898, and MNHN 7531 according to Vaillant 1898) 
Diagnosis 
CommentDistribution: Slightly larger distribution than that of the sympatric Paleosuchus trigonatus, extending into Paraguay and further into Brazil. Not listed for Guyana fide Cole et al. 2013.

Genome: Colston et al. 2025. 
EtymologyNamed after Latin palpebra = eyelid and the Latin suffix -osus, meaning full of; a reference to the prominent bony scales above the eyes (Gotch 1986). 
References
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