在德纪鱼类中,四足象的中耳结构
Martin D Brazeau1, Per E Ahlberg
1Subdepartment of Evolutionary Organismal Biology, Department of Physiology and Developmental Biology, Evolutionary Biology Centre, Uppsala University, Norbyv 18A, SE-752 36 Uppsala, Sweden. martin.brazeau@ebc.uu.se
Nature
|January 20, 2006
概括
四足动物中耳从鱼的螺旋结构的演化通过研究Panderichthys.被照亮. 这种化石揭示了悬浮转化的早期阶段,表明与螺旋呼吸的联系.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 比较解剖学的比较解剖学
背景情况:
- 从鱼类向四足动物的过渡涉及显著的骨修饰,包括中耳的发展.
- 关于四足动物中耳进化的早期阶段的化石证据,特别是来自骨形鱼的螺旋管和悬浮的转变,很少.
相关概念视频
The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
Cranial Bones: Lateral View
The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...


