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“In a scientific pursuit there is continual food for discovery and wonder”*…

 

An ancient bear skull sits on the floor of Hoyo Negro, a flooded cave on Mexico’s Yucatán Peninsula

Some 13,000 years ago in what’s now the Yucatán Peninsula, a deep pit inside a cave became the final resting place for a menagerie of exotic animals.

Now, their exquisitely preserved bones, trapped for centuries under water, are offering some of the first solid clues to how large Ice Age beasts were mixing and migrating between North and South America after the Isthmus of Panama connected the two continents.

“We’re going to go from a place with no records to having the best records for a lot of megafauna from Mexico, Central America, and northern South America,” says East Tennessee State University’s Blaine Schubert, who presented the findings this week at the Society of Vertebrate Paleontology’s annual meeting in Calgary.

The animal bones are also painting a more detailed picture of the strange world inhabited by Naia, an Ice Age girl found in the cave who is the oldest, most complete human skeleton yet discovered in the Americas…

A remarkable discovery sheds new light on the exchange of life that occurred when the Isthmus of Panama rose from the ocean to connect two continents that had been ecologically separate for tens of millions of years: “Ice Age Predators Found Alongside Oldest Human in Americas.”

* “In other studies you go as far as other have gone before you, and there is nothing more to know; but in a scientific pursuit there is continual food for discovery and wonder.”   – Mary Wollstonecraft Shelley, Frankenstein

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As we re-trim our family trees, we might send illuminating birthday greetings to Ferdinand Vandeveer Hayden; he was born on this date in 1829.  Trained as a physician (who served with the Union Army during the Civil War), Hayden was a practicing geologist and paleontologist noted for his work in the Badlands in the mid 19th century– it is believed he made the first North American discovery of dinosaur remains (1854)– and for his pioneering surveying expeditions of the Rocky Mountains later in that century, which helped lay the foundation of the U.S. Geological Survey.  Hayden is credited with having the Yellowstone geyser area declared the first national park (1872).

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Written by LW

September 7, 2017 at 1:01 am

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