|
Eunectes Stirtoni
''Eunectes stirtoni'' is an extinct species of anaconda that lived during the Middle Miocene ( Laventan) in the area of the present-day Tatacoa Desert. Fossils of the species have been found in the Honda Group at La Venta, Colombia. The validity of this species has been called into question. See also * ''Eunectes beniensis'' * ''Eunectes deschauenseei'' * Green anaconda * Yellow anaconda The yellow anaconda (''Eunectes notaeus''), also known as the Paraguayan anaconda, is a boa species endemic to southern South America. It is one of the largest snakes in the world but smaller than its close relative, the green anaconda. No subs ... References stirton Miocene reptiles of South America Laventan Neogene Colombia Fossils of Colombia Honda Group, Colombia Fossil taxa described in 1977 Taxa named by Robert Hoffstetter {{Alethinophidia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laventan
The Laventan ( es, Laventense) age is a period of geologic time (13.8 to 11.8 Ma) within the Middle Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Colloncuran and precedes the Mayoan age.Madden et al., 1997 Etymology The age is named after the Miocene Lagerstätte La Venta, where a rich biodiversity from the Middle Miocene has been recovered from the Honda Group. Formations Fossil content Correlations The Laventan (13.8 to 11.8 Ma) correlates with: * NALMA ** latest Barstovian (15.97-13.65 Ma)Barstovian at Fossilworks.org ** early |
Robert Hoffstetter
Robert Julien Hoffstetter (11 June 1908 in Fargniers – 29 December 1999 in Gennevilliers) was a French taxonomist and herpetologist who was influential in categorizing reptiles. He described the snake families Bolyeriidae and Madtsoiidae Madtsoiidae is an extinct family of mostly Gondwanan snakes with a fossil record extending from early Cenomanian ( Upper Cretaceous) to late Pleistocene strata located in South America, Africa, India, Australia and Southern Europe. Madts .... Selected bibliography *''Faune du gisement précolombien d'Anse-Belleville: Reptiles'', 1946 *''Les mammifères pléistocènes de la république de l'Equateur'', 1952 *''Notice sur les titres et travaux scientifiques'', 1955 *''Contribution à l'étude des Orophodontoidea, gravigrades cuirassés de la Patagonie'', 1956 *''Le gisement de ternifine'', 1963 *''Historique et géologie'', 1963 *''Révision des Artiodactyles de l'Eocène moyen de Lissieu (Rhône)'', 1972 *''Rongeurs caviomorphes de l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaconda
Anacondas or water boas are a group of large snakes of the genus ''Eunectes''. They are found in tropical South America. Four species are currently recognized. Description Although the name applies to a group of snakes, it is often used to refer only to one species, in particular, the common or green anaconda (''Eunectes murinus''), which is the largest snake in the world by weight, and the second longest after the reticulated python. Etymology The South American names ''anacauchoa'' and ''anacaona'' were suggested in an account by Peter Martyr d'Anghiera, but the idea of a South American origin was questioned by Henry Walter Bates who, in his travels in South America, failed to find any similar name in use. The word anaconda is derived from the name of a snake from Ceylon (Sri Lanka) that John Ray described in Latin in his ' (1693) as '. Ray used a catalogue of snakes from the Leyden museum supplied by Dr. Tancred Robinson, but the description of its habit was based on Andr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tatacoa Desert
The Tatacoa Desert is the second largest arid zone in Colombia after the Guajira Peninsula. It occupies more than 330 square kilometers. This region is located north of Huila Department, 38 km from the city of Neiva in Colombia and from Natagaima in Tolima. It is renowned as a rich deposit of fossils and a tourist destination. The Tatacoa Desert has two distinctive colors: ocher in the area of Cuzco and gray in the Los Hoyos area. The Tatacoa, or the Valley of Sorrows, as it was called in 1538 by the conquistador Gonzalo Jiménez de Quesada, is not a desert, but a tropical dry forest. The name "Tatacoa" also given by the Spanish, refers to its rattlesnakes. During the Tertiary Period, it was wetter, with thousands of flowers and trees, but has been gradually drying up to become an arid zone. Geography The Tatacoa covers 330 square kilometers around the town of Villavieja. The area is heavily eroded and crossed by dry canyons that develop transiently in the winter months ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda Group, Colombia
The Honda Group ( es, Grupo Honda, Tsh, Ngh) is a geological group of the Upper and Middle Magdalena Basins and the adjacent Central and Eastern Ranges of the Colombian Andes. The group, in older literature also defined as formation, is in its present-day type section in the Tatacoa Desert in the department of Huila subdivided into two main formations; La Victoria and Villavieja. The group was originally defined in and named after Honda, Tolima, but has been redefined based on the many fossil finds in the Tatacoa Desert, to the south. In the original type section of its occurrence, the thick group is subdivided into three formations, from old to young; Cambrás, San Antonio and Los Limones. The group dates to the Neogene period; in its broadest definition from the Late Oligocene to Late Miocene, and in the redefined type section restricted to the Laventan age of the South American Land Mammal Ages (SALMA), equivalent to the Middle Miocene Serravallian epoch. The Honda Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Venta (Colombia)
La Venta is a fossil locality located in the modern departments of Tolima and Huila in Colombia. This site is one of the richest Neogene fossil assemblages in South America and represents the best-known Cenozoic fossil site outside of Argentina. It provides a glimpse of what life in the region was like before the main wave of the Great American Interchange. Geology The fossils occur in Middle Miocene rocks of the Honda Group, which is divided into the younger Villavieja Formation and the older La Victoria Formation. The La Venta fauna contained ancient species of animal genera and families still alive today, as well as some entirely extinct prehistoric lineages. These animals lived some 13.8 to 12 million years ago in the Laventan age, which was named after La Venta. At that time, the climate of the region was wetter than today and there was much forest of trees similar (and probably related) to the ''sapino'' (''Goupia glabra'') of our time. List of fauna Fossil animals f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eunectes Beniensis
''Eunectes beniensis'' is a boa species known only from the northeastern parts of Bolivia. Its common names, the Bolivian anaconda and the Beni anaconda, are derived from the geographic location of its native habitat: the Beni area of Bolivia. Like all boas, it is nonvenomous. Taxonomy ''Eunectes beniensis'' is a species of boa, reaching between in length and can weigh up to . It was initially believed to be the result of hybridization between the green (''Eunectes murinus'') and yellow anaconda (''Eunectes notaeus''), but was later determined to be a distinct species. Its taxonomic status is unclear due to lack of information and the similarity in appearance to ''Eunectes notaeus''. It is closely related to ''Eunectes notaeus'' and ''Eunectes deschauenseei ''Eunectes deschauenseei'', commonly known as the dark-spotted anaconda or De Schauensee's anaconda, is a species of snake in the subfamily Boinae of the family Boidae. The species is native to northeastern South America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eunectes Deschauenseei
''Eunectes deschauenseei'', commonly known as the dark-spotted anaconda or De Schauensee's anaconda, is a species of snake in the subfamily Boinae of the family Boidae. The species is native to northeastern South America. Like all boas, it is a nonvenomous constrictor. No subspecies are currently recognized. Taxonomy The specific name, ''deschauenseei'', is in honor of American ornithologist Rodolphe Meyer de Schauensee, who donated a specimen to the Philadelphia Zoo in 1924. The type locality given is "probably collected on the island of Marajo at the mouth of the Amazon". Distribution and habitat ''Eunectes deschauenseei'' is found in South America, in northern Brazil (the Pará and Amapá states) and French Guiana. ''E. deschauenseei'' is a semi-aquatic species usually found in swampy, seasonally flooded freshwater areas at elevations below . Description Adult males of ''E. deschauenseei'' measure and adult females in snout-to-vent length (SVL). Reproduction Vitelloge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Anaconda
The green anaconda (''Eunectes murinus''), also known as the giant Emerald anaconda, common anaconda, common water boa or sucuri, is a boa species found in South America. It is the heaviest and one of the longest known extant snake species. Like all boas, it is a non-venomous constrictor. The term "anaconda" often refers to this species, though the term could also apply to other members of the genus ''Eunectes''. Fossils of the snake date back to the Late Pleistocene in the Gruta do Urso locality. Etymology The green anaconda's specific name is derived from the Latin ', meaning 'of mice', for being thought to prey on mice. Description The green anaconda is the world's heaviest and one of the world's longest snakes, reaching a length of up to long. More typical mature specimens reportedly can range up to , with adult females, with a mean length of about , being generally much larger than the males, which average around . Weights are less well studied, though reportedly ran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow Anaconda
The yellow anaconda (''Eunectes notaeus''), also known as the Paraguayan anaconda, is a boa species endemic to southern South America. It is one of the largest snakes in the world but smaller than its close relative, the green anaconda. No subspecies are currently recognized. Like all boas and pythons, it is non-venomous and kills its prey by constriction. Etymology The Neo-Latin specific name ''notaeus'' derives from grc, νωταίος, nōtaios, dorsal ( is a poetic form of /). In distinguishing his new species ''Eunectes notaeus'' from ''Eunectes murinus'', Edward Drinker Cope stated, "Dorsal scales are larger and in fewer rows." Description Adults grow to an average of in total length. Females are generally larger than males, and have been reported up to in length. They commonly weigh , but specimens weighing more than have been observed. The color pattern consists of a yellow, golden-tan or greenish-yellow ground color overlaid with a series of black or dark brow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eunectes
''Eunectes'' is a genus of boas found in tropical South America commonly called anacondas. They are a semiaquatic group of snakes and include one of the largest snakes in the world, '' E. murinus'', the green anaconda. Four species are currently recognized. Origin The recent fossil record of ''Eunectes'' is relatives sparse compared to other vertebrates and other genera of snakes. The fossil record of the this group is effected by an artifact called the Pull of the Recent. Fossils of recent ancestors are not known, so the living species ‘pull’ the historical range of the genus to the present. Etymology The name ''Eunectes'' is derived from grc, εὐνήκτης, eunēktēs, good swimmer. Distribution and habitat Found in tropical South America from Ecuador, Brazil, Colombia and Venezuela south to Argentina. Feeding All four species are aquatic snakes that prey on other aquatic animals, including fish, river fowl, and caiman. Videos exist of anacondas preying on domesti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Tatacoa Desert")
