Between 1815 and 1824, the Rev William Buckland, the first Reader of Geology at the University of Oxford, collected more fossilized bones of "Megalosaurus" and became the first person to describe a non-avian dinosaur in a scientific journal. The second non-avian dinosaur genus to be identified, "Iguanodon", was discovered in 1822 by Mary Ann Mantell – the wife of English geologist Gideon Mantell. Gideon Mantell recognized similarities between his fossils and the bones of modern iguanas. He published his findings in 1825.