Cretaceous Period

Leucichthyops

Leucichthyops vagans was a species of prehistoric salmonid fish which lived in what’s now western North America during the middle of the Cretaceous Period approximately 100 million years ago. The species was named in 1919 by Theodore D. A. Cockerell,… Read More ›

Erythrinolepis

Erythrinolepis was a prehistoric freshwater fish which lived in western North America during the middle to late Cretaceous Period approximately 100-66 million years ago. The name Erythrinolepis was coined by the paleontologist Theodore D. A. Cockerell in 1919. The name… Read More ›

Kelmayisaurus

Kelmayisaurus was an obscure species of large meat-eating dinosaur which lived in northwestern China (the region sometimes referred to as Uyghurstan) during the early to middle Cretaceous Period 130-120 million years ago. In 1964, fossils belonging to several dinosaur species… Read More ›

Dakosaurus

There were numerous kinds of marine reptiles which swam in the oceans during the Mesozoic Era, including the ichthyosaurs, plesiosaurs, and mosasaurs. Less well known are the marine crocodilians, or more accurately, crocodylomorphs. These animals are known as the thalattosuchians,… Read More ›

Euhelopus

Euhelopus was a sauropod dinosaur which lived in eastern China during the early Cretaceous Period approximately 130-112 million years ago. Fossils of this animal were found in the early 20th Century within the rocks of the Meng-Yin Formation within Shandong… Read More ›

Alectrosaurus

Alectrosaurus was a small tyrannosauroidean theropod dinosaur which lived in Mongolia during the middle of the Cretaceous Period around 95 million years ago. It is known from partial remains belonging to several individuals, but their incompleteness makes it difficult to… Read More ›

Gigantoraptor

Gigantoraptor was a massive 25-30 foot long oviraptorosaurian theropod dinosaur which lived in eastern Asia (and possibly in North America) during the middle of the Cretaceous Period. The fossils of this enormous bird-like dinosaur, consisting of a partial skeleton, were… Read More ›

Hylaeosaurus

Hylaeosaurus was a 15 foot long armored dinosaur which lived in England (and possibly elsewhere in Europe) during the early Cretaceous Period approximately 135 million years ago. The bones of this animal were discovered in July 1832 within Tilgate Forest,… Read More ›

Toxolophosaurus

Introduction Allow me to introduce you to Toxolophosaurus, “the bow-crested lizard”, which lived in Montana during the early to middle Cretaceous Period approximately 135-115 million years ago. Despite its name, Toxolophosaurus wasn’t either a dinosaur or a lizard. Instead it… Read More ›