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 ›
Cretalamna, meaning “chalk shark”, was a 10 foot long shark which lived from the middle Cretaceous Period to the Eocene Epoch of the Paleogene Period 105-46 million years ago. Cretalamna was one of the first so-called “modern” sharks to appear…. Read More ›
Kronosaurus was a massive marine reptile called a pliosaur which lived in the waters around northeastern Australia during the middle Cretaceous Period circa 105-100 million years ago. The fossils of this animal were discovered in 1899 in Queensland, Australia, consisting… Read More ›
Platypterygius, meaning “flat fin”, was a genus of ichthyosaur which lived during the middle of the Cretaceous Period approximately 115-95 million years ago. It was one of the last ichthyosaurs to exist before the entire group went extinct. Traditionally treated… Read More ›
Leptostyrax was a genus of prehistoric sand tiger shark measuring an impressive 20 feet long which lived in the oceans around North America, Europe, Africa, and Australia during the Cretaceous Period approximately 125-75 million years ago. Leptostyrax has a long… Read More ›
NOTE: This post was originally published on May 13, 2022. It was updated and re-uploaded on April 14, 2026. Leptocleidus was a genus of plesiosaur which lived in the oceans during the early Cretaceous Period about 135 to 125 million years… Read More ›
IntroductionNedcolbertia (named in honor of the American paleontologist Dr. Edward “Ned” Colbert, 1905-2001) was a mysterious and intriguing creature which inhabited western North America during the early Cretaceous Period about 140-130 million years ago. When it was officially named and… Read More ›
DINOSAURS AND BARBARIANS 