New marine reptile species identified

A newly identified species of marine reptile, Ichthyotitan severnensis, has been described by paleontologist Dean Lomax and his team in the journal PLOS ONE. This discovery adds to the growing understanding of prehistoric marine life and highlights the diversity of ichthyosaurs, a group of ancient sea-dwelling reptiles.

Size estimates and historical context

The creature, which lived during the time of the first dinosaurs, is estimated to have measured between 20 and 26 meters, rivaling the size of a blue whale. This makes Ichthyotitan severnensis one of the largest known ichthyosaurs, a group that typically included much smaller species.

Discovery location and timeline

The discovery was made in April 2024 based on a jawbone fragment found on the coast of Somerset, England. The fragment, a surangual measuring up to 145 centimeters, suggests the animal's full length would have exceeded two meters, though the actual size is estimated based on comparisons with other ichthyosaur fossils.

Discovery by a young fossil hunter

The fossil was discovered in May 2020 by Ruby Reynolds, an 11-year-old British girl, and her father Justin, while they were searching for fossils at Blue Anchor. The initial pieces of the jaw were uncovered during their search, and the final fragment was later recovered, highlighting the role of amateur fossil hunters in scientific discoveries.

Unique features and habitat

Due to the lack of a complete skeleton, the estimated size of the animal remains cautious. Ichthyotitan severnensis is part of a rare group of exceptionally large ichthyosaurs that appeared later in the timeline of these marine reptiles, distinguishing it from other ichthyosaurs, which were typically only a few meters long. The creature is believed to have lived in warm, shallow seas and was propelled by a powerful tail fin, with a silhouette more resembling an oversized dolphin than a fish.