A new analysis of fossilized jaws suggests that a gigantic, octopus-like predator up to about 60 feet long once hunted in the oceans during the age of dinosaurs, according to research described by CBS News. The study interprets the remains as evidence of a kraken-like animal that lived alongside other top marine predators tens of millions of years ago.
Researchers say the fossils, which preserve parts of the animal’s mouthparts, indicate a cephalopod — the group that includes modern octopuses, squids, and cuttlefish — that was far larger than any octopus alive today.
What the fossils show
According to CBS News, the new work centers on fossilized jaws attributed to an extinct cephalopod. In living cephalopods, these structures function like a beak, helping the animal grasp and slice prey. The size and proportions of the fossil jaws led the research team to estimate a body length of roughly 60 feet for the animal they belonged to.
The fossils come from rock layers dating to the age of dinosaurs, a span of time that ran from about 252 million to 66 million years ago. CBS News reports that the jaw size, compared with those of better-known fossil cephalopods, underpins the claim that this animal would have been among the largest soft-bodied predators of its era.
Because soft tissues such as arms and mantle rarely fossilize, the researchers relied on the preserved hard structures of the mouth to infer overall size. That method is common in cephalopod research, where scientists often scale from beaks or jaws in order to estimate the dimensions of the rest of the body.
A “kraken-like” giant in dinosaur seas
CBS News describes the animal as a “kraken-like” octopus, invoking the legendary sea monster to convey its scale. The comparison reflects the researchers’ interpretation that the animal was an octopus-style cephalopod — likely with multiple arms and a soft body — rather than a shelled creature.
If that interpretation is correct, the animal would have shared ancient seas with large marine reptiles, such as plesiosaurs and mosasaurs, which are known from other fossil finds of similar age. CBS News reports that the team believes this giant cephalopod would have been a major predator in that environment, using its arms and powerful jaws to seize sizeable prey.
The 60-foot estimate, if borne out by further work, would place this animal in the same general size class as the largest modern giant squids, but far beyond the size of any known living octopus. Today, the largest confirmed octopus species, such as the giant Pacific octopus, typically reach arm spans of only a few meters.
How scientists reached their conclusions
As described by CBS News, the researchers based their conclusions on detailed measurements and comparisons rather than on a complete skeleton. They examined the fossil jaws, compared them with those of other extinct and living cephalopods, and used established scaling relationships to project the animal’s full size.
The logic is similar to how paleontologists estimate the size of extinct sharks from teeth. In both cases, scientists start with a hard, durable part of the anatomy that fossilizes well, then apply known ratios between that part and total body size in related species.
CBS News notes that the team’s analysis suggests the jaws were robust enough to tackle large, active prey, consistent with the idea of a top predator. The age of the rock layers and the characteristics of the surrounding fossil fauna support the conclusion that this animal lived during the dinosaur era in a marine ecosystem already crowded with large hunters.
Why the finding matters — and what remains uncertain
The reported discovery, if confirmed by additional research, would expand the known range of body sizes achieved by octopus-like animals in Earth’s past. It would also add another major predator to the already complex food webs of dinosaur-age oceans.
CBS News emphasizes that independent corroboration of the 60-foot estimate and the exact identity of the animal remains limited so far. The current conclusions rest on a small number of jaw fossils and on comparisons with other cephalopods. As with many paleontological claims based on partial remains, the interpretation could be revised if new specimens are found.
At this stage, the evidence supports the existence of a very large cephalopod with octopus-like features living during the age of dinosaurs, and it indicates that this animal was likely an important hunter in its ecosystem. The precise details of its appearance, behavior, and maximum size, however, will depend on further fossil discoveries and additional analyses.
What to watch next
CBS News reports that scientists are continuing to study the fossils and to search for more remains from the same layers. Additional finds — especially any that preserve more of the arms or body — would help clarify how closely this animal resembled modern octopuses, how accurate the 60-foot estimate is, and how it fit into the broader community of dinosaur-era marine predators.
For now, the jaw fossils provide a rare glimpse of a giant, soft-bodied hunter that once prowled ancient seas, suggesting that the oceans of the dinosaur age were home to not only large reptiles and fish, but also to enormous, octopus-like cephalopods whose full story is only beginning to emerge.
