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Thursday, July 10, 2025
HomeReptileNew Tegu Species Found In the USA

New Tegu Species Found In the USA


Researchers introduced in a research within the Journal of Paleontology that tegu lizards, a big lizard that hails from South America and is in style with superior reptile keepers, lived in what’s now Georgia and Florida from between 17.5 to 14.5 million years in the past. This was when the area was about 3 levels Celsius hotter than immediately, the Arctic had no ice and tropical climates have been additional north than they’re immediately.

The invention of the tegu being in the USA that way back is predicated off a single half-inch broad vertebra fossil that was present in a fuller’s earth clay mine in Georgia within the early 2000s. Paleontologists with the Florida Museum of Pure Historical past have been alerted by staff on the mine of the fossil and it and lots of different fossils have been retrieved earlier than the mine was closed. The vertebra sat in storage for practically 20 years, unidentified, till Jason Bourque, a fossil preparator with the Florida Museum of Pure Historical past’s vertebrate paleontology division decided the vertebra was from a tegu lizard.

Stanley used a machine studying approach to routinely acknowledge and match landmarks to over 100 vertebra photographs used within the evaluation.
IMAGE FROM BOURQUE AND STANLEY, 2025

“We now have all these thriller bins of fossil bones, so I used to be digging by means of, and I stored coming throughout this one vertebra,” Bourque mentioned in a information launch put out by the museum. “I couldn’t work out what it was. I put it away for some time. Then I’d come again and say: Is it a lizard? Is it a snake? Behind my thoughts for years and years, it simply sat there.” Bourque then occurred to be engaged on a distinct analysis paper when he occurred throughout a tegu vertebra in one other research and realized the fossil was that of a tegu. “I noticed the tegu, and I simply knew straight away that’s what this fossil was,” Bourque mentioned.

Tegu Lizard Housing And Care Data

Bourque then labored with Edward Stanley, director of the museum’s digital imaging laboratory on definitively figuring out the fossil. They decided through CT scan and a brand new machine studying approach that the fossil was a tegu vertebra however didn’t match any tegu specimens within the database. They decided it to be a brand new species and gave it the identify Wautaugategu formidus, with Wautaugategu named after the forest wherein the fossil was found and formidus, which implies heat in Latin.

The researchers consider Wautaugategu formidus was round for a brief time period in what’s now Florida/Georgia as a result of the ocean degree was larger at the moment with the overwhelming majority of Florida underwater. They surmise the tegus could have swimmed from South America into what’s now Georgia. However the local weather modified all the pieces and so they disappeared.

“We don’t have any report of those lizards earlier than that occasion, and we don’t have any information of them after that occasion. It appears they have been right here only for a blip, throughout that actually heat interval,” Bourque mentioned.

An summary of the paper, “A tegu-like lizard (Teiidae, Tupinambinae) from the Center Miocene Climatic Optimum of the southeastern United States” will be learn on the Cambridge College Press web site.



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