Meet the 19-meter Cretaceous kraken that swam with mosasaurs

Paleontologists reconstruct the 19-meter jaws of a colossal Cretaceous squid that hunted alongside mosasaurs. | Contesto: cronaca

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• Meet the 19-meter Cretaceous kraken that swam with mosasaurs

Contesto

A team of researchers has unveiled the remains of a massive prehistoric cephalopod, estimated to have reached 19 meters in length, that prowled the Cretaceous seas alongside the fearsome mosasaurs. The discovery, detailed in a new study, offers a rare glimpse into the ancient predator’s anatomy, reconstructed layer by layer from fossilized jaw fragments found in marine deposits. The creature, described as a giant squid-like predator, represents one of the largest known invertebrates of its era, challenging previous assumptions about the size and ecological role of Cretaceous cephalopods. The reconstruction focused on the predator’s jaws, which were preserved in remarkable detail despite the passage of roughly 80 million years. Researchers used a combination of CT scanning and digital modeling to piece together the fragmented remains, revealing a beak-like structure capable of delivering powerful bites. The findings suggest this ancient kraken was an apex predator in its environment, competing directly with large marine reptiles such as mosasaurs for prey like fish, ammonites, and smaller reptiles. The study’s authors emphasize that the 19-meter length is an estimate based on the size of the jaws and comparisons with modern colossal squids, which can reach up to 14 meters. This places the Cretaceous specimen among the largest cephalopods ever known, surpassing even the modern giant squid in overall dimensions. The creature likely used its long tentacles to ambush prey, while its robust beak allowed it to tear flesh with efficiency. This discovery fills a critical gap in the fossil record, as soft-bodied cephalopods rarely preserve well. Most knowledge of ancient squid comes from rare impressions or stomach contents of their predators. The new jaw fossils, found in a region known for rich Cretaceous marine deposits, provide direct evidence of the size and predatory capabilities of these elusive animals. The researchers note that the jaws show signs of wear, indicating the creature was an active hunter that fed on tough-shelled prey. The implications extend beyond paleontology, offering insights into the food webs of Cretaceous oceans. The presence of such a large...

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Categoria: cronaca