Ancient 'Octopus' Fossil Reclassified as Nautilus
Scientists have discovered that a 300-million-year-old fossil, previously thought to be the earliest octopus, is actually a member of the nautilus family.
Why it matters
Correctly identifying ancient fossils is crucial for understanding the evolutionary history of species.
Key Points
- 1A 300-million-year-old fossil was long believed to be the earliest octopus
- 2After re-examination, researchers determined the fossil belongs to the nautilus family
- 3This corrects the evolutionary timeline for octopuses and nautiluses
Details
Researchers have reclassified a 300-million-year-old fossil that was previously identified as the earliest known octopus. After taking a closer look, they determined the fossil is actually a member of the nautilus family, a group of marine mollusks with spiral shells. This finding revises the evolutionary timeline, as octopuses and nautiluses were thought to have diverged much earlier. The new classification means the oldest known octopus fossil dates back only about 96 million years, much more recently than this 'octopus' fossil.
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