Walking snakes can move with a lot of speed in hunting for their food

When snakes walked the face of the earth 128.5 Million Years Ago, the dinosaur still existed an man has yet to come 122 million years later.

Snakes did have legs long time ago. Everything seems to have one pair even fishes. The present 3,400 species existing today may have the same ancient forebear with genuine toes and lower legs, as indicated by specialists on Tuesday.

Subsequent to assessing the information they have gathered by utilizing hereditary sequencing utilizing fossils, added to it the anatomical examination of 73 reptile and snake species, Yale University’s  scientist group has made what it calls the most complete snake “family tree” ever yet. The research has the answer all the inquiries in regards to where and how the snakes existed

“Having that tree as a backbone let us draw a ton of conclusions for what the ancestral snake would have been like,” said Daniel J. Field, a doctoral candidate in evolutionary biology and an author of the study. The team concluded that the most recent common ancestor of all living snakes was nocturnal, thrived 128.5 million years ago in the Southern Hemisphere and devoured relatively large prey whole using its sharp, hooked teeth as a hunting tool.

For them to achieve this conclusion, what the group did first was to reconstruct the snakes’ family tree from the tip to the body. To truly get an idea when a few qualities developed, for example, the manner they hunt their prey around evening time, how they constrict their body, how they first came into utilization, analysts used the hereditary and morphological data that they accumulated and gathered together bits of data, how the few kinds of snakes got to be identified with one another.

In the wake of tracing the connections among the distinctive groups, the herpetologists used diverse calculations to put the right information where it belongs. Things, for example, when a certain traits appeared in what they called ancestral state reconstruction process Mr. Field and his team recognized 11 qualities that they needed to embed in the tree of life. Each of the traits would correspond to a certain inquiry concerning the snakes’ evolutionary characteristics that researchers regularly come to open deliberation. Are the snakes’ water or land dwellers? Is it accurate to say that they are from the southern part or the north? Do they hunt their prey or scourge for food.

“I was most amazed by how strongly we inferred that the common ancestor retained hind limbs,” he said. The team published its tree of life for snakes in the journal BMC Evolutionary Biology.

Sometimes evolution plays out in unexpected and strange ways,” he said. “We think we’ve got a strongly supported idea, and based on the mathematical reconstruction it is what is most likely to be true.”

Image: http://a.dilcdn.com/bl/wp-content/uploads/sites

Source: http://www.esbtrib.com/2015/05/19/12674/snakes-walk-on-their-two-hind-legs-before/


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