2023年3月13日 · Esther van Hulsen The oldest fossils of an ichthyosaur ever found indicate that these fish-like reptiles evolved earlier than we thought – perhaps even before the world’s worst …

Reconstruction of Keilhauia nui by artist Esther van Hulsen. Researchers from the Natural History Museum, University of Oslo, just finished describing a 144 million years old ichthyosaur from …

2023年3月13日 · Image credit: Esther van Hulsen. Ichthyosaurs are a group of dolphin-shaped marine reptiles that played an important role as apex predators in Mesozoic oceanic …

2023年3月17日 · The remains, which consist of 11 tail vertebrae, were trapped within a limestone boulder that dated to the early Triassic period, which makes the fossils the oldest ichthyosaur …

2023年4月18日 · The earliest ichthyosaur fossil was discovered on the island of Spitsbergen in Svalbard and dates to around 250 million years old. Image © Esther van Hulsen via Kear et al.

2023年3月13日 · During the Early Triassic epoch, it was believed that ichthyosaurs and other ichthyosauromorphs evolved from a group of unidentified land reptiles that returned to the sea. …

2023年3月21日 · Vanderbilt’s Kelley, while agreeing that the Spitsbergen fossil seems to be from an ichthyosaur or close relative, also believes finding more bones from this earliest slice of the …

2023年3月14日 · Illustration: Esther van Hulsen For nearly 190 years, scientists have searched for the origins of ancient sea-going reptiles from the Age of Dinosaurs. Now a team of Swedish …

2023年3月13日 · Reconstruction of the earliest ichthyosaur and the 250-million-year-old ecosystem found on Spitsbergen. Credit: Esther van Hulsen

2023年3月13日 · Credit: Illustration: Esther van Hulsen. For nearly 190 years, scientists have searched for the origins of ancient sea-going reptiles from the Age of Dinosaurs.