在古代蝙蝠中推断回声定位
Nancy B Simmons1, Kevin L Seymour, Jörg Habersetzer
1American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024, USA. simmons@amnh.org
Nature
|August 21, 2010
概括
化石蝙蝠Onychonycteris finneyi可能没有使用喉回声定位. 重新检查其风 - tympanic 关节表明,这个原始的蝙蝠缺乏生物声波所需的解剖学.
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.
背景情况:
- 喉回声定位是蝙蝠的一个关键进化创新,使其能够实现复杂的感官感知和捕食.
- 识别化石蝙蝠中回声定位的骨质相关物对于理解它们的行为和进化至关重要.
- 风-带关节被认为是蝙蝠回声定位能力的可靠指标.
研究的目的:
- 重新评估有关Onychonycteris finneyi. tympanic关节的化石数据的解释.
- 为了确定Onychonycteris finneyi是否具有用于喉回声定位所必需的解剖结构.
主要方法:
- 在化石蝙蝠Onychonycteris finneyi.yi.中分析造型骨及其与耳骨的关节.
- 与现存和化石蝙蝠物种的回声定位相关的骨质特征的比较检查.
主要成果:
- 这项研究质疑Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.在Onychonycteris finneyi.
- 对化石证据的重新解释表明,拟议的接并不能清楚地辨认或存在.
结论:
- 尽管Onychonycteris finneyi处于原始状态,但很可能缺乏喉回声定位的能力.
- 这种关键表达的缺失挑战了关于早期蝙蝠感官能力和进化的先前假设.
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