Back to today’s briefing

Story perspectives

Ancient Fossil Sparks Debate on Life's Evolutionary Tree

1/25/2026

24 6

Summary

Story summary

A 407-million-year-old fossil, Prototaxites, may represent a previously unknown branch of life rather than an early type of fungus.
The fossil was found in Quebec, Canada, and has puzzled scientists for over 150 years.
A well-preserved Scottish specimen revealed chaotic tube structures and a distinctive chemical fingerprint.
Researchers propose Prototaxites forms a separate lineage of large, complex organisms, but classification remains unsettled.

1 of 1

Story summary

A 407-million-year-old fossil, Prototaxites, may represent a previously unknown branch of life rather than an early type of fungus.
The fossil was found in Quebec, Canada, and has puzzled scientists for over 150 years.
A well-preserved Scottish specimen revealed chaotic tube structures and a distinctive chemical fingerprint.
Researchers propose Prototaxites forms a separate lineage of large, complex organisms, but classification remains unsettled.