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10 kwi 2023 · From the creepiest Cambrian critters to massive marine reptiles, wonderfully weird sea creatures have inhabited our oceans for over half a billion years.
7 gru 2021 · Plesiosaurs had no gills so they had to come up to the surface for air just like marine mammals do today. That isn’t the only thing they have in common with modern dolphins and whales. A fossil found of a pregnant plesiosaur gives us evidence to support that these creatures gave birth to live young.
13 lut 2019 · Sea jellies (aka jellyfish) are a charismatic subphylum that is familiar to all. Fossil evidence dates sea jellies as far back as 500 million years ago—if not longer. Because they are soft bodied creatures and are at least 95% water, their fossils are extremely difficult to find, but not impossible when preserved in fine sediment.
During the Mesozoic, the time period when dinosaurs roamed on land, many of these large creatures were the top predators in the ocean food chain and fed on fish, cephalopods, bivalves, and even one another.
23 lip 2024 · A list of prehistoric sea creatures, including animals that inhabited the world’s oceans before, during, and after the age of the dinosaurs. Read on to discover amazing prehistoric ocean animals such as plesiosaurs, ichthyosaurs, pliosaurs, mosasaurs and ammonites.
16 sie 2017 · Sea turtles were represented by four known species, one of which was a 4m giant. Plesiosaurs had four flippers, but two different body types: large-headed, small-necked forms (called pliosaurs); and small-headed, long-necked forms.
See some of the most complete fossils of these prehistoric sea animals, including ichthyosaurs and plesiosaurs, and learn about the work of pioneering palaeontologist Mary Anning. Plus, look out for the skeleton cast of the giant ground sloth, a land mammal often mistaken for a dinosaur.
