How did digits evolve? While it is clear that they derive from genetic programs already present in fish, their precise origin remains a matter of debate. An international team led by the University of ...

Despite the huge number of dinosaur fossils found, from bones to feathers, precious little exists in the fossil record to explain dinosaur defecation, urination, or copulation. Thankfully, all three ...

Jan. 19 (UPI) --For the first time, scientists have described the cloaca, or vent, of a dinosaur -- the all-purpose opening used for reproduction and waste disposal. Many mammals have distinct ...

A team of scientists from the University of Bristol has described in detail the cloacal or vent of a dinosaur. The cloaca is an all-purpose opening dinosaurs used for defecation, urination, and ...

(This article forms a part of the Science for All newsletter that takes the jargon out of science and puts the fun in! Subscribe now!) The transition from fins to limbs is one of the most important ...

Why bother digesting, when the Cloaca machine can do it for you? What goes in must come out, or at least that is the case for the Cloaca (which we originally posted about last February), a machine ...

Zoologically speaking, the cloaca is the undifferentiated posterior orifice in birds, reptiles, and amphibians. It serves urinary, digestive, and reproductive functions carried out by specialized ...