DINOSAURS BECAME GIANTS — SO WHY DID THEY NEVER BECOME TINY?
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| Source | Latest linked headline | Age |
|---|---|---|
| All Top News -- ScienceDaily | DINOSAURS BECAME GIANTS — SO WHY DID THEY NEVER BECOME TINY? | 12 hrs ago |
WHAT HAPPENED
According to All Top News -- ScienceDaily, a new study explains why dinosaurs never evolved into truly tiny species. The research points to early mammals occupying the ecological niches that would have otherwise supported mouse‑sized dinosaurs, preventing a miniature dinosaur clade from forming.
The study argues that physiological limits alone cannot account for the missing miniature end of the dinosaur spectrum. While dinosaurs kept mammals from growing large, the presence of small mammals appears to have filled the ecological roles that could have supported very small dinosaurs, effectively blocking their evolution into miniature forms.
These findings provide insight into the body‑size diversity of dinosaurs and highlight the complex evolutionary interactions between dinosaurs and early mammals during the Mesozoic era.
- Dinosaurs largely remained large, with almost no truly tiny species recorded.
- Physiological constraints are insufficient to explain the lack of miniature dinosaurs.
- Early mammals likely occupied ecological niches that would have supported mouse‑sized dinosaurs.
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