Recent Posts - page 3
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Asteracanthus
Asteracanthus was a 6 foot long hybodont shark which lived from the middle Jurassic Period to the middle Cretaceous Period 165-100 million years ago. Unlike most prehistoric sharks which are known only from teeth, Asteracanthus is also known from some… Read More ›
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Cretalamna
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 ›
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Announcement: My novel won an award!
Hello everyone. On June 3, 2025, my novel Servant of a Living God was officially published. The story is set in the midst of a civil war in ancient Egypt in the year 1669 BC during a time Egyptologists have… Read More ›
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Cretodus
Cretodus, meaning “chalk tooth”, was a 22 foot long shark which lived throughout the world during the middle to late Cretaceous Period 100-85 million years ago. Cretodus was one of the first “modern” sharks to appear on earth during the… Read More ›
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Todiltia
Todiltia schoewei was a small prehistoric saltwater fish which lived in North America during the middle Jurassic Period 165 million years ago. Fossils of this fish have been found in Colorado and New Mexico within the Todilto Limestone Member of… Read More ›
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Occithrissops
Occithrissops willsoni was an 8 inch (20 cm) long saltwater fish which lived within the Sundance Sea during the middle Jurassic Period 165 million years ago. During the middle of the Jurassic Period, much of the center of North America… Read More ›
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Marshosaurus: The Mysterious Meat-Eating Dinosaur of the Morrison Formation
Introduction The Morrison Formation of western North America is one of the most well-studied geological formations within the world. These rock layers, which extend from Montana to New Mexico and from Utah to South Dakota, are dated to the late… Read More ›
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The Colymbosaurus-Kimmerosaurus Controversy
Introduction For paleontologists, determining whether fossils belong to an animal which is already known or if they belong to a hitherto undiscovered species can be a bit tricky, especially if the animal is only known from incomplete remains. Suppose you… Read More ›
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Plesiosuchus
Plesiosuchus was a 20 foot long marine crocodylomorph which lived in the tropical sea which once covered Europe during the late Jurassic Period 155-150 million years ago. In the 1860s, fragmentary fossils were discovered in Dorset, England by a local… Read More ›
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Xenacanthus
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 ›