Tyrannosaurus Rex: The Early Years. Some of the first, fragmentary fossils of Tyrannosaurus Rex were discovered by the famous paleontologist Edward Drinker Cope (with Othniel. C. Marsh, one of the participants in the notorious 19th-century Bone Wars) in South Dakota in 1892.
Wet behind the ears. Naive. The allusion is to the inexperience of a baby, so recently born as to be still wet. This phrase was in circulation in the USA in the early 20th century - twenty years before it was first recorded elsewhere. The converse of the phrase - 'dry back of the ears', was also known in the USA from around the same date. There is not much in the matter so far as the organ [the courthouse record] is concerned except it is so new that it is wet behind the ears yet.
The noises that you hear in your ears are as a result of the fluid in the middle ear becoming thickened, usually as the result of a cough or cold. There is a fine tube that runs from the middle ear to the back of the throat called the 'eustachian tube' and this becomes blocked by this sticky fluid, or mucus.