Undorosaurus

Undorosaurus had very strong teeth, unlike its close relative Ophthalmosaurus which had almost no teeth.1

Some scientists once thought Undorosaurus was the same as Ophthalmosaurus, but later studies showed it was a different genus because of its teeth and hip bones.1

The species Undorosaurus trautscholdi was named after a geologist named Hermann Trautschold, who found its fossil in 1878.1

Undorosaurus lived about 150 to 145 million years ago, during the Late Jurassic period.1

Its fossils have been found in three different countries: Russia, Norway (Svalbard), and Poland.1

The first Undorosaurus fossil was a partial skeleton with a skull, found near the Volga River in Russia.1