Evolutionary Development of the Middle Ear in Mesozoic Therian Mammals
β Scribed by Ji, Q.; Luo, Z.-X.; Zhang, X.; Yuan, C.-X.; Xu, L.
- Book ID
- 115527853
- Publisher
- American Association for the Advancement of Science
- Year
- 2009
- Tongue
- English
- Weight
- 645 KB
- Volume
- 326
- Category
- Article
- ISSN
- 0036-8075
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The development of middle-ear structures in the mouse was examined in nine groups of pups between 1 and 45 days of age. The area of the tympanic membrane (pars tensa and pars flaccida), the length of the lever arms of the malleus and incus, the surface area of the oval window, and the volume of the
## Abstract The ontogeny of various middleβear structures was examined in 11 groups of chicks between 10 days embryonic and adult. Measurements of the tympanic membrane surface area and height, columella length, and that of the columella footplate, annular ligament, and oval window area were obtain