South America

Aerotitan

Aerotitan was a pterosaur which lived in South America during the late Cretaceous Period 70 million years ago. The only fossil of this creature, consisting of just the front end of the upper jaw, was discovered in the early 2000s… Read More ›

Sulcusuchus

Sulcusuchus was a small polycotylid plesiosaur which lived off the coast of Argentina during the late Cretaceous Period around 70 million years ago. The fossils of this animal (collection ID code: MLP 88-IV-10-1) were first discovered 25 km north of… Read More ›

Eternauta

Eternauta patagonica was an ichthyosaur which lived around Argentina during the late Jurassic Period 152-145 million years ago. Fossils of this Jurassic marine reptile, consisting of a well-preserved skull measuring nearly four feet long, a flipper, and fragments of ribs,… Read More ›

Catutosaurus

Catutosaurus, meaning “the lizard from Los Catutos”, was a small ichthyosaur which lived around Argentina during the late Jurassic Period 152-145 million years ago. Fossils of this animal were found in the Vaca Muerta (“Dead Cow”) Formation, and the exact… Read More ›

Tropeognathus

Tropeognathus, meaning “keel jaw”, was a large pterosaur which lived in Brazil during the middle of the Cretaceous Period 112 million years ago. Tropeognathus was a member of a group of pterosaurs called the anhanguerids, named after the genus Anhanguera…. Read More ›

Alamosaurus

Introduction When one hears the word “dinosaur”, one often imagines the sauropods – the large long-necked long-tailed plant-eaters which came to dominate Earth’s landmasses during the Jurassic Period. The sauropods died out in North America at the end of the… Read More ›

Xiphactinus

There are many iconic predators of the Seven Seas: the Great White Shark, the Killer Whale, the Giant Squid, and others. In prehistoric times, the list of “epic marine killers” was much longer. One of those who definitely deserves a… Read More ›

Cladocyclus

Cladocyclus was a 4 foot long saltwater fish which lived around South America and Australia during the middle Cretaceous Period 110-100 million years ago. The famous Swiss ichthyologist Louis Agassiz coined the name Cladocyclus in 1841. The name, which means… Read More ›

Anhanguera

Anhanguera was a pterosaur which lived in Brazil during the middle Cretaceous Period 98-92 million years ago. Fossils have been found within the Romualdo Formation of Brazil’s Araripe Basin. Anhanguera is the namesake member of the pterosaur family Anhangueridae, which… Read More ›

Polyptychodon

Polyptychodon was a 23 foot long pliosaur which lived around North America, South America, and Europe during the middle Cretaceous Period 100-90 million years ago. The name Polyptychodon means “many-folded tooth” and refers to the ribbed surface on the teeth’s… Read More ›