A giant lizard, named after the Doors’ Jim Morrison, who was dubbed “The Lizard King,” once lived on Southeast Asia, sharing habitat and food sources with mammals.
From Science Daily:
A team of U.S. paleontologists, led by Jason Head of the University of Nebraska-Lincoln, describes fossils of the giant lizard from Myanmar this week in the scientific journal Proceedings of the Royal Society B. Their analysis shows that it is one of the biggest known lizards ever to have lived on land.
The creature’s scientific name is Barbaturex morrisoni — which means “Lizard King,” in honor of the aforementioned Doors singer.
At almost six feet long and weighing upwards of 60 pounds, the lizard provides new and important clues on the evolution of plant-eating reptiles and their relationship to global climate and competition with mammals.
In today’s world, plant-eating lizards like iguanas and agamids are much smaller than large mammal herbivores. The largest lizards, like the giant, carnivorous Komodo dragon, are limited to islands that are light on mammal predators. It is not known, however, if lizards are limited in size by competition with mammals, or by temperatures of modern climates, Head said.
But B. morrisoni lived in an ecosystem with a diversity of both herbivorous and carnivorous mammals during a warm age in Earth’s history — 36 to 40 million years ago — when there was no ice at the poles and atmospheric carbon dioxide levels were very high. The creature was larger than most of the mammals with which it lived, suggesting that competition or predation by mammals did not restrict its evolution into a giant.
“We think the warm climate during that period of time allowed the evolution of a large body size and the ability of plant-eating lizards to successfully compete in mammal faunas,” Head said.
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Photo: Craig Chandler / University of Nebraska-Lincoln, University Communications …read more
Read more here: King Snake
