Evolution of the cochlea of the ear, consisting of the scala media, the scala tympani, and the scala vestibuli. Regarding mammals, placental and marsupial cochleae have similar cochlear responses to auditory stimulation as well as DC resting potentials. This leads to the investigation of the relationship between these therian mammals and researching their ancestral species to trace the origin of the cochlea. This spiral-shaped cochlea that is in both marsupial and placental mammals is traced back to approximately 120 million years ago. The development of the most basic basilar papilla (the auditory organ that later evolved into the Organ of Corti in mammals) happened
Stirrup jar been made, but are generally unsupported. The most common, wine, had its own battery of containers from serving and drinking ware (cups, mixers, bowls, etc.) to transport vessels, the amphorae, which are generally larger and more plentiful than stirrup-jars. Wine was apparently more plentiful. Oil requires a significant investment in olive trees, which cannot be harvested for several years after planting. A third suggestion, perfume, is not compatible with the small quantities placed in perfume jars, which are always very small. The relatively large stirrup jars would represent unrealistically huge amounts of perfume. The early stirrup-jars were not distinguished by