Biology:Entotympanic
From HandWiki
The entotympanic is a bone found in the ear region of many placental mammals. When present it forms the medioventral part of the auditory bulla; it is a neomorphic element derived from the tubal cartilage and the sheath of the tympanohyal. It is found in a wide variety of placental mammals, including Xenarthra, Afroinsectophilia, Hyracoidea, Pholidota, Carnivora, Perissodactyla, Chiroptera, Dermoptera, and Scandentia; it is (apparently secondarily) reduced or absent in Glires, Primates, Eulipotyphla, and Artiodactyla (including Cetacea).[1] It is the only common neomorphic element of the mammalian skull.[2]
The entotympanic contacts the ectotympanic, with which it makes up the auditory bulla.[1]
References
- ↑ 1.0 1.1 Maier, Wolfgang (August 2013). "The entotympanic in late fetal artiodactyla (Mammalia)" (in en). Journal of Morphology 274 (8): 926–939. doi:10.1002/jmor.20149. ISSN 0362-2525. https://onlinelibrary.wiley.com/doi/10.1002/jmor.20149.
- ↑ Koyabu, Daisuke (2023-07-03). "Evolution, conservatism and overlooked homologies of the mammalian skull" (in en). Philosophical Transactions of the Royal Society B: Biological Sciences 378 (1880). doi:10.1098/rstb.2022.0081. ISSN 0962-8436. PMID 37183902. PMC 10184252. https://royalsocietypublishing.org/doi/10.1098/rstb.2022.0081.
 |  |
