Story perspectives

Ancient Fossil Reveals Early Herbivorous Vertebrate Adaptations

2/11/2026

Summary

Story summary

Tyrannoroter heberti, a 307-million-year-old fossil from Cape Breton Island, Nova Scotia, is among the earliest land vertebrates able to eat plants.
The fossil shows specialized teeth for grinding vegetation, suggesting earlier herbivory than thought.
Tyrannoroter likely had a mixed diet that included insects, which may have supported gut microbes needed to digest plants.
The findings illuminate early terrestrial ecosystems and vertebrate adaptations during climatic changes at the Carboniferous end.

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Story summary

Tyrannoroter heberti, a 307-million-year-old fossil from Cape Breton Island, Nova Scotia, is among the earliest land vertebrates able to eat plants.
The fossil shows specialized teeth for grinding vegetation, suggesting earlier herbivory than thought.
Tyrannoroter likely had a mixed diet that included insects, which may have supported gut microbes needed to digest plants.
The findings illuminate early terrestrial ecosystems and vertebrate adaptations during climatic changes at the Carboniferous end.