47-Million-Year-Old Snake The World’s First fossil Of Live Birth :
The Argentina German the team of scientists, including Senckenberg’s Krister Smith ‘ has discovered the world’s first fossil evidence of the live birth in snakes.The fossil they identify came from the Hessian UNESCO world Heritage Site Messel Pit.
In the Study which is published in the Journal The Science Of Nature, The scientists describe bones of the snake embryos discovered in the body of female snake(Mother’s body). It shows that giving birth to young that have already developed inside the mother’s body, rather than producing snake eggs already existed at least 47 million years ago.
Most reptiles are alive today lay eggs, this so-called oviparity(expulsion of undeveloped eggs rather than live young) is their most general mode of reproduction. but there are exception case numerous species of snake and lizards are known to deviate from the norm and giving birth to their offspring alive.
According to Dr. Senckenberg Krister Smith :
Fossil preservation of reproductive system is commonly rare . Only two fossil records of viviparous land reptiles have been discovered to date and recorded. We have now sucseeded to identified the world’s first fossil evideпce of a viviparous snake, says Dr. Senckenberg Krister Smith of the Natural History Museum Frankfurt and Senckenberg Research Institute.
In live birth of the young remain in the female’s body until they are viable eliminating the need for a protective eggshell. This is an advantageous evolutionary strategy for reptiles in cool climates, as the temperature inside the female’s body is more stable and thus safer for their offspring. Therefore, many of today’s viviparous snake and lizards have evolved in rather cool climates.
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