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Vertebrates

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3 ARTICLES

last mo.

Study Finds Dinosaurs Were Barred From Evolving into Very Small Body Sizes

The authors argue ecological pressures likely imposed a lower size limit on non‑avian dinosaurs, and powered flight allowed the bird lineage to escape that constraint.

10 ARTICLES

3mo ago

Fossil Hatchlings Show Early Tetrapods Grew Up Without Tadpole Metamorphosis

4 ARTICLES

8mo ago

Ordovician Mass Extinction Set the Stage for the Rise of Jawed Fishes

3 ARTICLES

9mo ago

Fossil Brain Scans Point to Rapid Origin of Pterosaur Flight