Tag Archives: american alligator

Piranha Kin Wielded Dental Weaponry Even T. Rex Would Have Admired

By Guest PostDecember 27, 2012Nature, Scienceamazon river, american alligator, american university, ancient relative, anecdotes, armored fish, barracuda, bite, bite force, black piranha, blacktip shark, bull shark, c caracharias, c leucas, c limbatus, cairo, carcharodon megalodon, carnivorous fishes, customized force gage, dunkleosteus terrelli, earth, egypt, extinct mega predators, extinct piranhas, fossilized jaw, george washington university, guillermo orti, hammerhead shark, history, hyperbole, jaw forces, jaw muscles, jorge porto, justin grubich, largest piranha, mega bites, megapiranha paranensis, piranha infested waters, piranha like ability, piranhas, prehistoric, s mokarran, serrasalmus rhombeus, skeleton, soft tissue, stephanie crofts, steve huskey, t rex, teeth, tendons, tyrannosaurus rex, university of washington, western kentucky university, whale eating sharks, white sharks

Taking into consideration its size, an ancient relative of piranhas weighing about 20 pounds delivered a bite with a force more fierce than prehistoric whale-eating sharks, the four-ton ocean-dwelling Dunkleosteus terrelli and – even – Tyrannosaurus rex.

Besides the force of the bite, Megapiranha paranensis appears to have had teeth capable of shearing through soft tissue the way today’s piranhas do, while also being able to pierce thick shells and crack armoring and bones, according to Stephanie Crofts, a University of Washington doctoral student in biology. (more…)

UF-led study: Invasive Amphibians, Reptiles in Florida Outnumber World

By Guest PostSeptember 24, 2011Environment, Scienceamerican alligator, bishop museum in honolulu, brown anole, burmese pythons, cargo ships, cement walls, Cuba, everglades, florida, florida museum of natural history, fred kraus, greenhouse frog, iguanas, invasion of lizards, invasive amphibian and reptile, kenneth krysko, lizards, python, turtles, university of florida, west indies, zootaxa

GAINESVILLE, Fla. — Florida has the world’s worst invasive amphibian and reptile problem, and a new 20-year study led by a University of Florida researcher verifies the pet trade as the No. 1 cause of the species’ introductions.

From 1863 through 2010, 137 non-native amphibian and reptile species were introduced to Florida, with about 25 percent of those traced to one animal importer. The findings appear online today in Zootaxa. (more…)