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Traíra
The Erythrinidae are a family of fishes found in rivers and other freshwater habitats from Costa Rica south as far as Argentina. They are common and are caught with hooks by fishermen, partially because of their voracious behaviour. They are sometimes called ''trahiras'' (also spelled trairas) or ''tarariras''. The Erythrinidae include cylindrical fish with blunt heads, and prey on other fish. They can reach lengths up to . Some species can breathe air, enabling them to survive in water low in oxygen, and even to move over land between ponds. The earliest definitive remains of the family are of '' Hoplias'' from the Middle Miocene of Colombia. Potential fossil remains are known from the Early Paleocene-aged Tenejapa-Lacandón Formation of Mexico. The three genera in this family appear to have diverged from one another over the Paleogene. However, most species within the family are relatively young, their evolution influenced by major tectonic changes in South America over the N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Miocene
The Middle Miocene is a sub-epoch of the Miocene epoch (geology), epoch made up of two Stage (stratigraphy), stages: the Langhian and Serravallian stages. The Middle Miocene is preceded by the Early Miocene. The sub-epoch lasted from 15.97 ± 0.05 Ma (million years ago) to 11.608 ± 0.005 Ma. During this period, a sharp drop in global temperatures took place. This event is known as the Middle Miocene disruption, Middle Miocene Climatic Transition. For the purpose of establishing European land mammal ages, this sub-epoch is equivalent to the Astaracian age. References External links GeoWhen Database - Middle Miocene Miocene, .02 Miocene geochronology, 02 Langhian, * Serravallian, * {{geochronology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenejapa-Lacandón Formation
The Tenejapa-Lacandón Formation is a geological formation and lagerstätte in southern Mexico and western Guatemala. It preserves fossils dating to the Early Paleocene. It is located primarily in the Mexican state of Chiapas, but outcrops lie as far west as Petén Department, Petén, Guatemala. Some consider it as two distinct formations, the Tenejapa Formation to the west and the Lacandón Formation to the east, which are contiguous and contemporary with each other. The Lacandón Formation was deposited in a shallow inshore marine habitat, whereas the Tenejapa Formation was deposited in a deep offshore habitat. They appear to preserve a marine ecosystem deposited on the western margin of the Caribbean Sea. The most prominent exposures are at the División del Norte and Belisario Domínguez quarries near Palenque, Chiapas, which contain articulated fish skeletons belonging to a variety of taxa of both Cenozoic and Mesozoic affinities. This formation was also the source of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
