Orodus was a prehistoric saltwater fish which lived from the late Devonian Period to the middle Permian Period 380-278 million years ago. The genus Orodus was officially named by the famous Swiss ichthyologist Louis Agassiz in 1838. It became the… Read More ›
Ctenacanthus, meaning “comb spine”, was a prehistoric proto-shark which lived from the late Devonian Period to the early Permian Period 370-270 million years ago. The genus Ctenacanthus was named by the famous Swiss ichthyologist Louis Agassiz in 1837 for fossilized… Read More ›
Sphenacanthus, meaning “wedge spine”, was a genus of primitive proto-shark measuring 3 feet long which lived from the late Devonian Period to the end of the Permian Period 360-252 million years ago. Sphenacanthus was named in 1837 by the Swiss… Read More ›
Xenacanthus, meaning “strange spine”, was a 3 foot long shark-like freshwater fish which lived in North America, South America, Europe, and Asia from the second half of the Carboniferous Period to the end of the Permian Period, approximately 323-251 million… Read More ›
Orthacanthus, meaning “straight spine”, was a 10 foot long freshwater shark-like fish which lived during the late Carboniferous Period and early Permian Period roughly 315-275 million years ago. The genus Orthacanthus is divided into twelve different species, two of which… Read More ›
Synechodus was a genus of prehistoric saltwater shark which lived from the early Permian Period until the late Eocene Epoch of the Paleogene Period, 290 to 37 million years ago (Ivanov 2005, pages 127-138). Fossils of this animal reached around… Read More ›
NOTE: This article was originally published on May 4, 2022. On December 30, 2025, it was updated and re-uploaded. Polyacrodus was a genus of prehistoric shark, composed of several species, with fossils found in North America, South America, Europe, Asia, and… Read More ›
Well, it was that time of year again! Every April or so, at around the time of Easter, the Garvies Point Museum and Preserve, located in Glen Cove, Nassau County, New York, holds it annual “Dinosaur Day”. This is one… Read More ›
A creature that’s often mistaken for a dinosaur is Dimetrodon. If you’re an adult reading this, you may not recognize the name, but you’ll probably know it when you see it. Ask any 6 year old child, and he or… Read More ›
