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Species Kura-kura shell tebal hidup
dengan ular terbesar di dunia, fosil mengungkapkan ditemukan di tambang batubara kolombia
Thick-shelled turtle species lived with world's biggest snake, reveals
fossil found in Colombian coal mine
Date:
April 8,
2010
Source:
Smithsonian Tropical Research
Institute
Summary:
The discovery of a new fossil turtle species in
Colombia's Cerrejón coal mine by researchers helps to explain the origin of one
of the most biodiverse groups of turtles in South America.
.......................
The discovery of a new fossil turtle species in Colombia's
Cerrejón coal mine by researchers from the Smithsonian Tropical Research
Institute in Panama and the Florida Museum of Natural History helps to explain
the origin of one of the most biodiverse groups of turtles in South America.
Cerrejonemys
wayuunaiki takes its
genus name from Cerrejón, and emys -- Greek for turtle. Its species name is the
language spoken by the Wayuu people who live on the Guajira Peninsula in
northeastern Colombia near the mine.
About as
thick as a standard dictionary, this turtle's shell may have warded off attacks
by the Titanoboa, thought to have been the world's biggest snake, and by other,
crocodile-like creatures living in its neighborhood 60 million years ago.
"The
fossils from Cerrejón provide a snapshot of the first modern rainforest in
South America -- after the big Cretaceous extinctions and before the Andes
rose, modern river basins formed and the Panama land bridge connected North and
South America," explains Carlos Jarmillo, staff scientist at the
Smithsonian who studies the plants from Cerrejón.
"We are
still trying to understand why six of this turtle's modern relatives live in
the Amazon, Orinoco and Magdalena river basins of South America and one lives
in Madagascar," explains Edwin Cadena, first author of the study and a
doctoral candidate at North Carolina State University. "It closes an
important gap in the fossil record and supports the idea that the group
originated near the tip of South America before the continent separated from
India and Madagascar more than 90 million years ago."
Cadena will
characterize two more new turtle species and analyze the histology of fossil
turtle bones from the Cerrejón site. "I hope this will give us an even
better understanding of turtle diversity in the region and some important clues
about the environment where they lived."
Story Source:
The above
story is based on materials provided by Smithsonian Tropical Research Institute. Note: Materials may be edited
for content and length.
Journal
Reference:
- Edwin Cadena, Jonathan Bloch, Carlos Jaramillo. New Podocnemidid Turtle (Testudines: Pleurodira) from the Middle-Upper Paleocene of South America. Journal of Vertebrate Paleontology, 2010; 30 (2): 367 DOI: 10.1080/02724631003621946
