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New Discovery Is Forcing Scientists to Rethink This Theory

  • Publish date: Wednesday، 11 February 2026 Reading time: 1 min read
New Discovery Is Forcing Scientists to Rethink This Theory

Over 150 years ago researchers started seeing sponges as the first animals to evolve from the root of the animal tree. That idea stood strong because they look so basic - no tissues, no organs, nothing like modern creatures. Yet by the end of 2025 something shifted: work led by an global network of scientists appeared in Nature questioning it all. A fresh method, based on detailed chromosome scans across many living kinds, reveals strong proof that comb jelly animals (ctenophores), rather than sponges, split off first among creatures.
 

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