Carcharhinus is the type genus of the family Carcharhinidae, the requiem sharks. One of 12 genera in its family, it contains over half of the species therein. It contains 35 extant and eight extinct species to date, with likely more species yet to be described.
Pythonichthys is a genus of eels of the family Heterenchelyidae that occur in tropical waters of the eastern Pacific Ocean off of Panama and in the Atlantic Ocean near the Caribbean Sea and the west coast of Africa. It contains the following described species:
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.
The Moin Formation is a geologic formation in Costa Rica. It preserves fossils dating back to the Late Pliocene to Early Pleistocene period.
The Río Banano Formation is a geologic formation in Costa Rica of the Limón Group. It preserves fossils dating back to the Middle Miocene to Piacenzian period.
The Cayo Agua Formation is a geologic formation in Panama. It preserves fossils dating back to the Pliocene period.
The Escudo de Veraguas Formation is a geologic formation in Panama. It preserves fossils dating back to the Piacenzian to Early Pleistocene period.
The Nancy Point Formation is a geologic formation in Panama. It preserves fossils dating back to the Miocene period.
The Chagres Formation (Tc) is a geologic formation in the Colón Province of central Panama. The sandstones and siltstones were deposited in a shallow marine environment and preserve fossils dating back to the Middle to Late Miocene period.
The Gatún Formation (Tg) is a geologic formation in the Colón and Panamá Provinces of central Panama. The formation crops out in and around the Panama Canal Zone. The coastal to marginally marine sandstone, siltstone, claystone, tuff and conglomerate formation dates to the latest Serravallian to Tortonian, from 12 to 8.5 Ma. It preserves many fossils, among others, megalodon teeth have been found in the formation.
The Tuira Formation is a geologic formation in Panama. It preserves bivalve, gastropod and sponge fossils dating back to the Tortonian period, from 11 to 9.5 Ma.
The Swan Cay Formation is a geologic formation in Panama. It preserves fossils.
The Bocas del Toro Group is a geologic group in Panama. It preserves fossils dating back to the Serravallian to Early Pleistocene period. The group comprises the Swan Cay, Isla Colón, Escudo de Veraguas, Cayo Agua, Shark Hole Point, Nancy Point and Valiente Formations.
The Mao Formation is a geologic formation in the northwestern Dominican Republic. The reefal limestone and siltstone formation preserves bivalve, gastropod, echinoid and coral fossils dating back to the Pliocene period.
The Manzanilla Formation is a geologic formation in Trinidad and Tobago. It preserves fossils dating back to the Middle Miocene period.
The Springvale Formation is a geologic formation in Trinidad and Tobago. It preserves fossils dating back to the Late Miocene period.
The Brasso Formation is a geologic formation in Trinidad and Tobago. It preserves fossils dating back to the Early Eocene to Serravallian period.
The Urumaco Formation is a formation in Venezuela that includes deposits from the Late Miocene. It is the site of several "giant forms": the turtles, crocodiles, sloths and rodents of Urumaco are among the largest of their groups.
The Onzole Formation is an Early Pliocene geologic formation in the Borbón Basin of northwestern Ecuador. The formation consists of a shallow marine sandstone member containing many fish fossils, among which megalodon, and a deep water member comprising tuffaceous shales and mudstones containing gastropods, bivalves and scaphopods.
Panama 
