This article, published by Jesse Grismer et al., discusses the biological origins of Indian Dragon Lizards, scientifically named Draconinae Agamidae, and whether they come from Eurasian descent, or India, before the continents merged together. The study conducted a genomic DNA comparison of the Indian Dragon Lizards from muscle and liver tissues. Through DNA testing with other samples of older species, along with geographic and biographic data samples, it was concluded with a high degree of certainty that the fauna and flora of this time period (around 50 million years ago) was more likely to have occurred through land bridges, in which these reptiles crossed over into India from, proposed by the scientists as the Eocene Exchange Hypothesis. This scientific literature successfully proved those DNA extraction of Draconinae species the occurrence of a land bridge through Eurasia and India during this time, which can be used in future studies to account for how new species made their way across the world millions of years ago. The graph and diagram below shows the occurrence of these species and the way in which the scientists believe the countries moved over the course of the years and how this effected the evolution and relocation of these animals.
BMC Evolutionary Biology201616:43
© Grismer et al. 2016
Received: 17 December 2015
Accepted: 8 February 2016
Published: 19 February 2016
1 comment:
Very interesting!
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