Fossil Analysis Reveals Prehistoric Octopus Species Reached Over 60 Feet in Length
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Researchers have identified a prehistoric octopus species that grew significantly larger than modern giant squids. Using a novel AI-assisted technique, they analyzed fossils from Japan and Canada, revealing details about the creature's size and anatomy. The findings provide new insights into the early evolution of finned octopuses.
Facts First
- A prehistoric octopus species, Nanaimoteuthis haggarti, grew between 23 and 62 feet long
- Researchers used an AI-assisted 'digital fossil mining' technique to analyze Cretaceous-period rock samples
- The species is identified as the oldest known finned octopus (Cirrata)
- Its jaws were approximately 150% larger than those of modern giant squids
- The fins of N. haggarti would have been as wide as an average man is tall
What Happened
Researchers at Hokkaido University recovered fossils from sediments in Japan and Vancouver Island belonging to a prehistoric octopus species called Nanaimoteuthis. The largest species, Nanaimoteuthis haggarti, is identified as the oldest Cirrata, or finned octopus. The fossils consist of the beak and lower jaw of the creature.
The team used a technique called 'digital fossil mining,' applying high-resolution grinding tomography to sedimentary rock samples from the Cretaceous period and then subjecting the images to an artificial intelligence (AI) model to map the fossils. The largest fossil found showed substantial wear on the beak, which correlated with a 62-foot body length. The largest jaw, associated with a 60-foot-long animal, had lost 10% of its total chitinous mass due to wear.
Why this Matters to You
This discovery expands our understanding of prehistoric marine life and the potential size range of ancient cephalopods. For those interested in natural history or evolution, it provides a tangible link to a creature that lived millions of years ago and was far larger than its modern relatives. The successful use of AI in paleontology may lead to more discoveries from existing rock samples, potentially accelerating our knowledge of Earth's past.
What's Next
The 'digital fossil mining' technique could be applied to other sedimentary rock samples, which may lead to the discovery of more fossilized remains from soft-bodied animals that are typically difficult to find. Further analysis of these and any newly found fossils might provide more details about the anatomy, behavior, and ecological role of Nanaimoteuthis haggarti. Researchers may also investigate how this species fits into the broader evolutionary tree of octopuses and squids.