Graduate Student Discovers a New Fossil Species Dating Back 551 Million Years

A graduate student in Canada has discovered a previously unknown fossil species preserved in rocks that are about 551 million years old.

Heléna Muirhead-Hunt, a palaeobiology master’s student at Memorial University of Newfoundland, found the fossils at Inner Meadow in Upper Island Cove, Newfoundland. The site is known for preserving soft-bodied organisms that rarely survive in the fossil record.

A Discovery From the Ediacaran Period

The fossils date to the Ediacaran Period, a time more than half a billion years ago when some of the earliest complex organisms lived in Earth’s oceans.

Unlike many familiar fossils, the newly discovered organism did not have a shell or hard skeleton. Its body was preserved as an impression in the rock beneath a layer of volcanic ash.

A Strange Ancient Creature

The researchers named the new species Edrathina obditchia. Its body had a broad disc at the base, a cone-shaped central structure and at least six stiff, branching limbs extending from the upper part.

After examining its structure, the researchers concluded that the fossil most closely resembles an early member of the evolutionary group that includes modern comb jellies.

Found While Studying an Important Fossil Site

Muirhead-Hunt discovered the specimens while working at the Inner Meadow site, where researchers have previously found numerous fossils belonging to the Ediacara biota.

The exceptional preservation at the site allows scientists to study soft-bodied organisms that would normally have disappeared without leaving a recognizable fossil.

Why the Discovery Matters

The new fossil provides another piece of evidence for understanding how early animal life evolved. The researchers compared its anatomy with other Ediacaran organisms and with younger fossils believed to be related to comb jellies.

The study suggests that Edrathina obditchia may represent an early branch of the evolutionary history leading toward the comb-jelly lineage.

A Young Researcher Making an Ancient Discovery

The discovery highlights the role that graduate researchers can play in uncovering new evidence about Earth’s distant past.

For Muirhead-Hunt and her colleagues, the fossil is not simply a new species. It is also another example of how Newfoundland’s ancient rocks can preserve clues about life that existed hundreds of millions of years before humans appeared.

Published Scientific Research

The researchers described Edrathina obditchia in a peer-reviewed study published in Frontiers in Ecology and Evolution in September 2026.

The discovery adds a new species to the fossil record and gives scientists another opportunity to investigate the early evolutionary history of complex marine organisms.

Sources

• Memorial University of Newfoundland — “A fossiliferous gift that keeps on giving: another groundbreaking discovery made at Inner Meadow by Memorial University researchers” — September 28, 2026.
• Frontiers in Ecology and Evolution — “Edrathina obditchia, an Ediacaran stem-group ctenophore from the Fermeuse Formation of Newfoundland” — September 25, 2026.
• Memorial University Gazette — “A fossiliferous ‘marvel’” — September 25, 2026.