This cloaca is more than 100 million years old, and it did a lot of work for this extinct species. By Katherine J. Wu The world’s oldest known all-purpose orifice sits in a fossil display case ...

The cloaca is an all-purpose opening on the body of many animals – including lizards, turtles and birds – that is used … Close. Advertisement. Skip to content. Sign in.

The cloaca is the black, ridged area on the underside of the tail, at the centre of the image. 3D Camouflage in an Ornithischian Dinosaur, Current Biology (2016) Psittacosaurus sp. SMF R 4970 ...

This particular cloaca was found on a Psittacosaurus specimen, a Cretaceous dinosaur that looked like a cross between a parrot and a lizard (not coincidentally, that’s also what ...