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Acresuchus
''Acresuchus'' ("Acre crocodile") is an extinct monospecific genus of medium-sized caiman from the Late Miocene of western Brazil andVenezuela. The genus contains a single species, ''Acresuchus pachytemporalis''. ''Acresuchus'' is a close relative of the giant caiman ''Purussaurus.'' Description The hypodigm of ''Acresuchus'' consists of the holotype, UFAC-2507, a nearly complete skull, and several referred specimens, most found in Niteroi, located in the Solimões Formation in Acre. ''Acresuchus'' takes its name from the state it was found in (Acre), while the species name ''pachytemporalis'' refers to the extreme thickening of the squamosal bones in the holotype. Another specimen, MCNUSB-PB-02FU-RS43, a skull fragment, was found in the middle member of the Urumaco Formation in Venezuela. According to the describing authors, ''Acresuchus'' is a: "Caimanine with a medium-sized body, teeth with smooth (non-serrated) carinae, orbits large in comparison with other caimanines, hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necrosuchus Ionensis
''Necrosuchus'' is an extinct genus of caiman from modern day Argentina that lived during the Paleocene epoch (Selandian age, about 60 million years ago). It inhabited the fluvio-lacustrine environment of the Patagonian Salamanca Formation. History and naming The fossil remains of ''Necrosuchus'' were unearthed on April 3, 1931 during the First Scarritt Expedition in the Argentinian Salamanca Formation and presented to American paleontologist Charles C. Mook. Mook however, busy with other research, was unable to describe the specimen himself. As an initial description was deemed vital to the works of several student researches at the time, Mook handed the specimen back to George G. Simpson for study. He eventually published his preliminary description in 1937, writing that his research "only carries this study as far as necessary" in the hopes of a more detailed description being later published by Mook himself. However this would not come to be and the postcranial was not describ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caiman
A caiman (also cayman as a variant spelling) is an alligatorid belonging to the subfamily Caimaninae, one of two primary lineages within the Alligatoridae family, the other being alligators. Caimans inhabit Mexico, Central and South America from marshes and swamps to mangrove rivers and lakes. They have scaly skin and live a fairly nocturnal existence. They are relatively small-sized crocodilians with an average maximum weight of depending on species, with the exception of the black caiman (''Melanosuchus niger''), which can grow more than 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 long. There are six different species of caiman found throughout the watery jungle habitats of Central and Southern America. The average length for most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caiman
A caiman (also cayman as a variant spelling) is an alligatorid belonging to the subfamily Caimaninae, one of two primary lineages within the Alligatoridae family, the other being alligators. Caimans inhabit Mexico, Central and South America from marshes and swamps to mangrove rivers and lakes. They have scaly skin and live a fairly nocturnal existence. They are relatively small-sized crocodilians with an average maximum weight of depending on species, with the exception of the black caiman (''Melanosuchus niger''), which can grow more than 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 long. There are six different species of caiman found throughout the watery jungle habitats of Central and Southern America. The average length for most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caimaninae
A caiman (also cayman as a variant spelling) is an alligatorid belonging to the subfamily Caimaninae, one of two primary lineages within the Alligatoridae family, the other being alligators. Caimans inhabit Mexico, Central and South America from marshes and swamps to mangrove rivers and lakes. They have scaly skin and live a fairly nocturnal existence. They are relatively small-sized crocodilians with an average maximum weight of depending on species, with the exception of the black caiman (''Melanosuchus niger''), which can grow more than 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 long. There are six different species of caiman found throughout the watery jungle habitats of Central and Southern America. The average length for most o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mourasuchus
''Mourasuchus'' is an extinct genus of giant, aberrant caiman from the Miocene of South America. Its skull has been described as duck-like, being broad, flat, and very elongate, superficially resembling ''Stomatosuchus'' from the Late Cretaceous. History of Discovery ''Mourasuchus'' was first described by Price in 1964 based on a strange and nearly complete skull from the Solimões Formation of Amazonian Brazil, calling it ''Mourasuchus amazoniensis''. Unaware of Price's discovery, Langston described ''"Nettosuchus" atopus'' ("Absurd Duck Crocodile") only a year later based on fragmentary cranial, mandibular and postcranial remains from the middle Miocene La Venta Lagerstätte, a part of the Honda Group. Although he did recognize its similarities to caimans and alligators, Langston reasoned that its bizarre anatomy warranted its own monotypic family, naming it Nettosuchidae.Langston, W. (1965). ''Fossil crocodilians from Colombia and the Cenozoic history of the Crocodilia in So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuttanacaiman Iquitosensis
''Kuttanacaiman'' is a monotypic genus of extinct caiman represented by the type species ''Kuttanacaiman iquitosensis''. ''Kuttanacaiman'' lived in what is now the Amazon basin during the Middle Miocene, approximately 13 million years ago (Ma). The species was named in 2015 on the basis of one nearly complete skull and a second partial skull from the Pebas Formation near Iquitos, Peru. ''K. iquitosensis'' is characterized by a short, rounded snout and blunt teeth at the back of its jaws that were likely adapted to crushing freshwater bivalves. Its estimated total body length is . Etymology The genus name comes from the Quechuan languages, Quechua word ''kuttana'', meaning "grinding or crushing machine", and its species name honors the Iquitos native peoples. Habitat ''Kuttanacaiman'' lived in Amazonia at a time before the Amazon River Basin was established; in its place was a massive wetland, called the Pebas Mega-Wetland System, that covered an approximate area of over in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocaiman Cavernensis
''Eocaiman'' is an extinct genus of caiman containing species living from the Early Paleocene to Miocene in what is now Argentina (Salamanca and Sarmiento Formations), Itaboraí Formation of Brazil and Colombia ( Honda Group).''Eocaiman'' at Fossilworks.org ''Eocaiman'' contains three described species: ''E. cavernensis'', ''E. palaeocenicus'', and ''E. itaboraiensis'', and is typically recovered as one of the more basal members of |
Eocaiman Itaboraiensis
''Eocaiman'' is an extinct genus of caiman containing species living from the Early Paleocene to Miocene in what is now Argentina (Salamanca and Sarmiento Formations), Itaboraí Formation of Brazil and Colombia ( Honda Group).''Eocaiman'' at .org ''Eocaiman'' contains three described species: ''E. cavernensis'', ''E. palaeocenicus'', and ''E. itaboraiensis'', and is typically recovered as one of the more basal members of |
Eocaiman Palaeocenicus
''Eocaiman'' is an extinct genus of caiman containing species living from the Early Paleocene to Miocene in what is now Argentina (Salamanca and Sarmiento Formations), Itaboraí Formation of Brazil and Colombia ( Honda Group).''Eocaiman'' at .org ''Eocaiman'' contains three described species: ''E. cavernensis'', ''E. palaeocenicus'', and ''E. itaboraiensis'', and is typically recovered as one of the more basal members of |
Globidentosuchus Brachyrostris
''Globidentosuchus'' is an extinct genus of basal caimanine crocodylian known from the late Middle to Late Miocene of the Middle and the Upper Members of the Urumaco Formation at Urumaco, Venezuela. Its skull was very short and robust, with large units of spherical teeth used to break the shells of molluscs as part of its durophagus diet. It is thought to be one of the most basal Caimanines, even sharing some traits with alligatorids. Etymology The generic name ''Globidentosuchus'' is derived from the Latin roots ''globus'' meaning "sphere" and ''dens'' meaning "tooth", referring to the spherical teeth in the posterior skull, and Greek ''souchos'' meaning "crocodile" after its classification. The species name ''brachyrostris'' is derived from the Greek ''brachys'' meaning "short" and Latin ''rostrum'' meaning "snout" after the truncated and robust rostrum of the species. History and taxonomy ''Globidentosuchus'' was described in 2013 by T. M. Scheyer and colleagues, the ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gnatusuchus Pebasensis
''Gnatusuchus'' is an extinct genus of caiman represented by the type species ''Gnatusuchus pebasensis'' from the Middle Miocene Pebas Formation of Peru. ''Gnatusuchus'' lived about 13 million years ago (Ma) in a large wetland system called the Pebas mega-wetlands that covered over one million square kilometers of what is now the Amazon Basin (the modern basin had not yet developed at that time and instead of draining from west to east into the Atlantic Ocean, river systems drained northward through the wetlands and into the Caribbean Sea). Discovery and naming Fish and molluscs have long been known from the Pebas Formation, however starting in 2002 systematic surveys of the Peruvian Iquitos area have led to the discovery of many vertebrate remains including further fish remains, mammals, turtles and an abundance of crocodilians, with two contemporaneous lignitic bonebeds preserving a minimum of 7 coexisting taxa. Among the fossils recovered from the Iquitos localities is the holo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culebrasuchus Mesoamericanus
''Culebrasuchus'' is an extinct, monotypic genus of caiman alligatorid known from the Early to Middle Miocene (Hemingfordian) of the Panama Canal Zone of Panama. It contains a single species, ''Culebrasuchus mesoamericanus''. Discovery ''Culebrasuchus'' was first described and named by Alexander K. Hastings, Jonathan I. Bloch, Carlos A. Jaramillo, Aldo F. Rincona and Bruce J. Macfadden in 2013 based on a single holotype skull and three neck vertebrae from the Culebra Formation. ''Culebrasuchus'' is thought to be the most basal member of Caimaninae, meaning that it represents the earliest radiation of caimans in the Americas. The ancestor of ''Culebrasuchus'' likely lived farther north, perhaps in what is now southern Mexico, because before the Miocene most of Panama was underwater. The movement of ''Culebrasuchus'' into the Panama Canal Zone was an early part of the Great American Interchange in which animals dispersed between North and South America across the newly formed Is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
