Reptiles

Scientists have discovered that snake embryos coil into a right-handed spiral because their bodies grow faster than their guts, creating a physical constraint that forces the embryo to twist.

Scientists discovered *Labrujasuchus expectatus*, a Triassic crocodile relative that walked on two legs, had tiny arms, and a toothless beak, resembling an ostrich-like dinosaur.

Scientists used DNA from museum specimens to identify the extinct Seychelles crocodiles as an isolated population of saltwater crocodiles, solving a 250-year-old mystery.