Ectotympanic
The ectotympanic, or tympanicum, is a bony ring that holds the eardrum, or tympanic membrane.[1] Its position and attachment to the skull vary within mammals, and particularly primates, and can be either intrabullar or extrabullar.[2][3]
It is homologous with the angular.
References
- ↑ Ankel-Simons, F. (2007). Primate Anatomy (3rd ed.). Academic Press. pp. 435–436. ISBN 0-12-372576-3.
- ↑ Archibald, J.D. (1977). "Ectotympanic bone and internal carotid circulation of eutherians in reference to anthropoid origins". Journal of Human Evolution 6 (7): 609–622. doi:10.1016/S0047-2484(77)80134-6.
- ↑ Sellers, W.I. "Strepsirhine/Haplorhine Split". Retrieved 18 August 2010.
External links
- webref: Anthropology
- Hershkovitz P (1974). "The Ectotympanic Bone and Origin of Higher Primates". Folia Primatologica 22 (4): 237–42. doi:10.1159/000155628. PMID 4218574.
- Jones FW, Lambert VF (October 1939). "The occurrence of the lemurine form of the ectotympanic in a primitive marsupial". J. Anat. 74 (Pt 1): 72–5. PMC 1252559. PMID 17104802.