Notes on the Mysterious Origin of Hippos
Africa, Anthracotheriidae, biology, brachiopods, bryozoans, cephalopods, Charles Darwin, constancy, corals, Doliochoeridae, Ernst Mayr, Evolution, evolutionary derivations, foraminifers, fossil record, genera, Georges Cuvier, ghost lineages, Hippopotamidae, Hippopotamus amphibius, hippos, Intelligent Design, Louis Agassiz, Martin Pickford, megafauna, National Geographic, ostracods, paleontology, species, stasis, subfamilies, trilobites, ” and waiting around without any function that might explain why natural selection working on random mutations bothered to engineer them
The family Hippopotamidae appears abruptly in the fossil record — like all the other groups that I have so far investigated in detail. Source