Evolution of the cochlea about 7 mm long. Like in lepidosaurs and archosaurs, it contains a lagena, a vestibular sensory epithelium, at its tip. Only in therian mammals (marsupials and placentals) is the cochlea truly coiled 1.5 to 3.5 times. Whereas in monotremes there are many rows of both inner and outer hair cells in the organ of Corti, in therian (marsupial and placental) mammals the number of inner hair-cell rows is one, and there are generally only three rows of outer hair cells. Amphibians have unique inner ear structures. There are two sensory papillae involved in hearing, the basilar (higher frequency) and amphibian
Fantastic Beasts and Where to Find Them (film) the film would be the start of a trilogy. In July 2016, David Yates confirmed that Rowling had written the screenplay for the second film and had ideas for the third. In October 2016, Rowling announced that the series would now comprise five films. The first sequel, titled "", was released on 16 November 2018. Fantastic Beasts and Where to Find Them (film) Fantastic Beasts and Where to Find Them is a 2016 fantasy film directed by David Yates. A joint British and American production, it is a spin-off and prequel to the "Harry Potter" film series, and is produced