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Story summary
- A *Science* paper by paleontologist Yasuhiro Iba et al. reports two giant finned Cretaceous octopus species that may have reached up to 62 feet.
- The team re-examined 15 known fossil jaws and uncovered 12 new ones with digital fossil-mining in Japan.
- Jaw dimensions suggest *N. haggarti* measured 23–62 feet, potentially the largest known invertebrate.
- Paleontologists René Hoffman and Christian Klug say the estimates rely on error-prone averages and are uncertain.
