Serpentes Titanoboa

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Serpentes Titanoboa • Some 60 million years ago, well after the demise of the dinosaurs, a giant relative of today's boa constrictors, weighing more than a ton and measuring 13 meters long, hunted crocodiles in rain-washed tropical forests in northern South America, according to a new filfossil discovery. • The fossil find - a batch of super-size vertebrae pulled from an open- pit coal mine in northeastern Colombia - is remarkable enough just as a paltliltleontological extreme. ThiThe species, g iven the name Titanoboa cerrejonensis, is the largest known snake species ever discovered. Locomotion • Figure 13-5 – Lateral undulation http://www.youtube.com/watch?v=JA5PyUFGHtI – Rectilinearhttp://www.youtube.com/watch?v=Ci_OxulaWwY – Concertina – Sidewinding http://www.youtube.com/watch?v=JyXNBAHu32o Snake Skull • Snakes have 8 links in the skull with joints Prey detection Thermal prey detection • Some snakes detect prey by thermal cues • Infrared light is sensed by trigeminal- innervated blind nerve endings • Many boas and pythons have labial “pits” and cro tlitalines (iti(pit vipers )h) have “it”i“pits” in their loreal scales • Temperatures of 0.05 degrees C will elicit a response from some snakes Prey capture • Depends on prey, many species just grab their prey and eat it. • Large prey pose other problems • Constriction http://www.youtube.com/watch?v=-Evvo79ojME • Venom injection http://www.youtube.com/watch?v=_wSetsdtNfw Venomous snakes • Venom glands are Duvernoy’ s Gland • The venom delivery system consists of the gland, muscles to force venom from the gland, ducts to transport venom, and fangs to inject venom Venomous snakes •Oppgypisthoglyphous – snakes have one or more enlarged teeth near the rear of the maxilla (mainly found in Colubrids) • PlhProteroglyphous – hllhollow fangs locate d at t he front of the maxilla that are permanently erect (Elapidae) • Solenoglyphous – the hollow fangs are the only teeth on the maxilla and can rotate so that the fangs can fold up when the mouth is closed (pit vipers and true vipers) Venom Table 13-4 Snake defensive behaviors • Death feigggning • Mimicry • Warning colors • Diverting attack • Spitting • http://www. youtube.com/watc h?v=_5dtpMj9Ehs.

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Ancient Crocodile Relative Likely Food Source for Titanoboa 2 February 2010, by Bill Kanapaux
Ancient crocodile relative likely food source for Titanoboa 2 February 2010, by Bill Kanapaux "We're starting to flesh out the fauna that we have from there," said lead author Alex Hastings, a graduate student at the Florida Museum and UF's department of geological sciences. Specimens used in the study show the new species, named Cerrejonisuchus improcerus, grew only 6 to 7 feet long, making it easy prey for Titanoboa. Its scientific name means small crocodile from Cerrejon. The findings follow another study by researchers at UF and the Smithsonian providing the first reliable evidence of what Neotropical rainforests looked like 60 million years ago. While Cerrejonisuchus is not directly related to On Feb. 1, 2010, Alex Hastings, a graduate student at modern crocodiles, it played an important role in UF’s Florida Museum of Natural History, measures a the early evolution of South American rainforest jaw fragment from an ancient crocodile that lived 60 ecosystems, said Jonathan Bloch, a Florida million years ago. The fossil came from the same site in Museum vertebrate paleontologist and associate Colombia as fossils of Titanoboa, indicating the crocodile curator. was a likely food source for the giant snake. "Clearly this new fossil would have been part of the food-chain, both as predator and prey," said Bloch, who co-led the fossil-hunting expeditions to (PhysOrg.com) -- A 60-million-year-old relative of Cerrejon with Smithsonian paleobotanist Carlos crocodiles described this week by University of Jaramillo. "Giant snakes today are known to eat Florida researchers in the Journal of Vertebrate crocodylians, and it is not much of a reach to say Paleontology was likely a food source for Cerrejonisuchus would have been a frequent meal Titanoboa, the largest snake the world has ever for Titanoboa.
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en Pagina legal Cítese como: Escalante, Juan Fernando Alzate, Santiago Cañón, Obra completa: Báez, L. y F. Trujillo (Eds.). 2014. José Camilo Costa, Viviana Delgado, Alex Báez, Biodiversidad en Cerrejón. Carbones de Cerrejón, INVEMAR, Lilia Lastra, BIOMA Consultores, Fundación Omacha, Fondo para la Acción John Jairo Gómez, Luis Alonso Merizalde, División Ambiental y la Niñez. Bogotá, Colombia. 352 p. de Comunicaciones de Cerrejón, Carlos Jaramillo, Mary Luz Cañón, Mauricio Jaramillo P. y Laura Capítulos: Feged R. Blanco-Torres, A. y J. M. Rengifo. Herpetofauna de Cerrejón. Pp. 150-169. En: Báez, L. y F. Trujillo CERREJÓN (Eds.). 2014. Biodiversidad en Cerrejón. Carbones de Cerrejón, Fundación Omacha, Fondo para la Roberto Junguito Pombo Acción Ambiental y la Niñez. Bogotá, Colombia. Presidente de Cerrejón 352 p. Luis Germán Meneses Revisión científica Vicepresidente Ejecutivo de Operaciones José Vicente Rodríguez Mahecha Conservación Internacional Gabriel Bustos Gerente Gestión Ambiental Revisión Editorial Julio García Robles Lina Báez Especialista Biodiversidad Asistencia editorial Margarita Moreno Arocha FUNDACIÓN OMACHA Cartografía Fernando Sierra Dalila Caicedo Herrera Directora Ejecutiva Diseño y diagramación Luisa Fda. Cuervo Fernando Trujillo González zOOm diseño S.A.S. Director Científico Impresión FONDO PARA LA ACCIÓN AMBIENTAL Unión gráfica Ltda. Y LA NIÑEZ – FONDO ACCIÓN ISBN: 978-958-8554-36-5 José Luis Gómez Director Ejecutivo Fotografías Fernando Trujillo, Lina Báez, Juan Manuel Alejandro Silva Espinosa Rengifo, Julio García
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