Articles for category: Prehistoric SeaWorld

Massive mosasaurs and plesiosaurs needed huge amounts of food to survive.

Meet the Giant Predators of the Late Cretaceous Seas

The Late Cretaceous period, spanning from approximately 100 to 66 million years ago, witnessed Earth’s oceans teeming with some of the most formidable marine predators to ever exist. As dinosaurs dominated the land, equally impressive giants ruled the prehistoric seas. These ancient marine hunters evolved remarkable adaptations that made them perfectly suited for their aquatic ...

Tanystrophaeus recon

Tanystropheus: The Weirdest Long-Necked Reptile You’ve Never Heard Of

In the vast pantheon of prehistoric creatures, few are as bizarrely constructed yet surprisingly overlooked as Tanystropheus. Living approximately 242-232 million years ago during the Middle Triassic period, this extraordinary reptile boasted one of the most extreme body proportions ever evolved: a neck that was longer than its entire body and tail combined. Neither dinosaur ...

Albertonectes vanderveldei, a new elasmosaur

Elasmosaurus: The Long-Necked Wonder of the Ancient Seas

The prehistoric oceans were home to some of Earth’s most remarkable creatures, and few were as strikingly unusual as Elasmosaurus. This extraordinary marine reptile, with its impossibly long neck and streamlined body, swam through the waters of the Late Cretaceous period approximately 80.5 million years ago. As a member of the plesiosaur family, Elasmosaurus has ...

Scleractinian Corals

What Fossilized Coral Reefs Reveal About Ancient Climate Change

Ancient coral reefs, preserved as fossils for millions of years, serve as remarkable natural archives of Earth’s climate history. Like tree rings or ice cores, these marine structures contain chemical signatures and physical characteristics that provide scientists with detailed insights into past environmental conditions. As climate change increasingly affects our modern world, these fossilized reefs ...

Ichthyosaurs first appeared in the early Triassic period, approximately 250 million years ago, evolving from terrestrial reptiles that returned to the sea.

How Ichthyosaurs Adapted to Life in Ancient Oceans

Ichthyosaurs represent one of the most remarkable examples of convergent evolution in the fossil record. These magnificent marine reptiles, whose name means “fish lizards,” dominated Earth’s oceans for over 150 million years during the Mesozoic Era. Despite being air-breathing reptiles that evolved from terrestrial ancestors, ichthyosaurs developed adaptations so specialized for aquatic life that they ...

During the Jurassic, high sea levels flooded continents, forming vast shallow seas and reshaping coastlines across the globe.

Underwater Worlds: The Lost Continental Shelves of the Mesozoic

Beneath our modern oceans lie the submerged remnants of ancient worlds—vast continental shelves that once hosted diverse ecosystems during the Mesozoic Era (252-66 million years ago). These shallow marine environments, now hidden beneath hundreds of meters of water, were once thriving habitats where prehistoric creatures flourished in warm, sunlit waters. The story of these lost ...

Mother and Juvenile Plesiosaur

How the Marine Reptile Plesiosaurus Took Over the Seas

Beneath the rippling waters of Earth’s ancient oceans, a remarkable reptilian dynasty once reigned supreme. The Plesiosaurus and its relatives dominated the marine realm for over 135 million years, evolving into some of the most specialized aquatic predators our planet has ever witnessed. With their distinctive body plan—featuring elongated necks, compact bodies, and powerful flipper-like ...

Mosasaurs went live—fossils suggest they gave birth to young in the open sea.

What Lurked in the Water During the Age of Dinosaurs?

When we envision the Mesozoic Era—the Age of Dinosaurs spanning from 252 to 66 million years ago—our minds often conjure images of towering sauropods and fearsome predators like Tyrannosaurus rex stalking the prehistoric landscapes. However, equally fascinating and perhaps even more terrifying were the ancient marine ecosystems teeming with predators that would make today’s sharks ...

Archelon ischyros Naturhistorisches Museum Wenen

What Fossils Reveal About the Evolution of Turtles

The enigmatic turtle, with its distinctive shell and ancient lineage, represents one of the most recognizable and unique evolutionary designs in the vertebrate world. For centuries, scientists have been fascinated by these remarkable creatures and their mysterious origins. Fossil discoveries have provided crucial windows into the turtle’s evolutionary journey, revealing a complex and sometimes surprising ...

Kronosaurus hunting on the plesiosaur Woolungasaurus

The Sea Monsters of the Mesozoic: Ichthyosaurs, Pliosaurs & Mosasaurs

The depths of Earth’s primordial oceans once teemed with marine predators so formidable that they would eclipse many of today’s apex ocean hunters. During the Mesozoic Era (252-66 million years ago), while dinosaurs dominated the land, the seas belonged to a spectacular array of reptilian creatures that had returned to aquatic lifestyles. Ichthyosaurs with their ...