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Titanoboa cerrejonensis by avancna
by avancna

My first critique for Deviantart ... here we go ... The snake Titanoboa is the largest ever discovered and has caused some media attent...

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Granastrapotherium 2 by Zimices
Granastrapotherium 2
Reconstructed skeleton of Granastrapotherium snorki, the giant astrapothere of Miocene Colombia. The bones are based on Astrapotherium, and proportions in the reconstruction of this animal by Jorge Moreno Bernal. I've added tusks elongated and straight, typical of large males of this species.

Update (28/06/2015): I've changed the previous skeletal for a new version, with the idea of show how much of this animal has been found (also, to give it a better appearance). However, this image is still very speculative: the limb bones of this animal - femur, tibia, humerus, radius, two metacarpals and astragalus -  have been described but not illustrated (as far I know), so what is showed here is modified from Astrapotherium and Hilarcotherium, and the skull is actually a composition based in different individuals - including two relatively complete skulls found in Peru, still undescribed -  and also, is worth to note that these limbs are not from a same individual, although its proportions are relatively similar to Astrapotherium, but the radius and tibia are shorter, meanwhile the humerus and femur are more pillar-like, in order to support the larger weight of Granastrapotherium (over 3100 kg).

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Esqueleto reconstruido de Granastrapotherium snorki, el astrapoterio gigante de Colombia en el Mioceno. Los huesos están basados en Astrapotherium, y las proporciones en la reconstrucción de este animal hecha por Jorge Moreno Bernal. Le he añadido colmillos alargados y rectos, propios de los machos grandes de esta especie.

Actualización (28/06/2015): He cambiado la imagen anterior por una nueva versión, con la idea de mostrar cuanto de este animal ha sido hallado (y de paso, darle una mejor presentación). De todas maneras, la imagen continúa siendo muy especulativa: los huesos de las extremidades - fémur, tibia, húmero, radio, dos metacarpianos y astrágalos -  han sido descritos pero nunca ilustrados (hasta donde sé), por lo que se muestra aquí ha sido modificado a partir de Astrapotherium e Hilarcotherium, mientras que el cráneo es en realidad una composición basada en individuos diferentes - incluyendo dos cráneos relativamente completos procedentes de Perú, aún sin describirse -  y además, debe añadirse que estas extremidades no proceden de un único individuo, si bien sus proporciones son bastante parecidas a las de Astrapotherium, pero el radio y la tibia son más cortos, mientras que el húmero y el fémur son similares a columnas, a fin de soportar el mayor peso de Granastrapotherium (alrededor de 3100 kg).

References:

Contexte biochronologique en Amérique du Sud

Jaramillo, Mauricio Pardo. "Reporte de un nuevo ejemplar de Granastrapotherium snorki en el Valle Superior del Magdalena, Desierto de la Tatacoa, Huila, Colombia." Revista de la Academia Colombiana de ciencias exactas, físicas y naturales 34.131 (2010): 253-256.

Johnson, Steven Carl. Astrapotheres from the miocene of Colombia, South America. University of California, Berkeley, 1984.

Johnson, Steven C., and Richard H. Madden. "Uruguaytheriine astrapotheres of tropical South America." Vertebrate Paleontology in the Neotropics. The Miocene Fauna of La Venta, Colombia. Smithsonian Institution Press, Washington and London (1997): 355-382.

Scott, William Berryman. "The Astrapotheria." Proceedings of the American Philosophical Society (1937): 309-393.

Scott, William Berryman. (1928). Astrapotheria of the Santa Cruz beds. Rept. Princeton Univ. Exp. Patagonia, VI, Part IV, 301-342.

Vallejo-Pareja, M. C., et al. "Hilarcotherium castanedaii, gen. et sp. nov., a new Miocene astrapothere (Mammalia, Astrapotheriidae) from the Upper Magdalena Valley, Colombia." Journal of Vertebrate Paleontology 35.2 (2015).


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Zimices
Paleoaficionado
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Colombia
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Contact: zimices@gmail.com
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New fossils shows that snakes arise in the Late Jurassic, and surely had a terrestral origin... read more here:
www.sci-news.com/paleontology/…

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:iconwtoosey:
WToosey Featured By Owner Edited Jun 28, 2015  New Deviant Student General Artist
Thanks for the faves and watch! Your work looks really good and interesting to look at, such as the reconstructions on the Cenozoic life of South America.
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:iconzimices:
Zimices Featured By Owner Jun 28, 2015  Hobbyist
Likewise, thanks to you :)
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:iconplioart:
Plioart Featured By Owner Jun 19, 2015  Hobbyist Digital Artist
Thanks for the +fav!
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:iconzimices:
Zimices Featured By Owner Jun 20, 2015  Hobbyist
No problem :)
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:icondontknowwhattodraw94:
Dontknowwhattodraw94 Featured By Owner Jun 12, 2015  Hobbyist Traditional Artist
Thank you for the favorite :)
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:iconzimices:
Zimices Featured By Owner Jun 12, 2015  Hobbyist
You're welcome ;)
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:iconleogon:
Leogon Featured By Owner Jun 12, 2015  Hobbyist General Artist
Thanks a lot for the new faves:-)
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:iconzimices:
Zimices Featured By Owner Jun 15, 2015  Hobbyist
No problem ;)
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:icondaikaiju-fanboy:
Daikaiju-fanboy Featured By Owner May 18, 2015
Thanks for accepting the invite to join the fanpage for the Prehistory: A Traveler's Guide podcast. 
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:iconzimices:
Zimices Featured By Owner May 19, 2015  Hobbyist
Thanks for invite me :)
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