# Dinosaurs may have been eating seaweed 100 million years ago

Source: [Plants & Animals News -- ScienceDaily](https://www.sciencedaily.com/releases/2026/11/261112230502.htm) · 2026-11-15 · Life
Page: https://themorning.science/story/dinosaurs-may-have-been-eating-seaweed-100-million-years-ago-eb7e17bdccc6049d
Kind: research · Impact: low

## In brief

- Researchers found chemical signatures in fossilized dinosaur teeth suggesting coastal dinosaurs and other prehistoric animals ate seaweed and other ocean foods.
- The evidence points to these diets more than 100 million years ago.
- The sources available here are a short summary, so the specific methods and sample details are not confirmed.

## Why it matters

It adds evidence that some dinosaurs in coastal habitats used marine food sources, which can refine reconstructions of their diets and ecosystems.

## Coverage

- [Dinosaurs may have been eating seaweed 100 million years ago](https://www.sciencedaily.com/releases/2026/11/261112230502.htm) — Plants & Animals News -- ScienceDaily, 2026-11-15

Tags: dinosaurs, paleontology, fossils, diet, marine-ecology

---

Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science