@article {308430,
	title = {Early hominin auditory capacities.},
	journal = {Sci Adv},
	volume = {1},
	year = {2015},
	note = {<p>http://advances.sciencemag.org/content/1/8/e1500355.abstract</p>
},
	month = {2015 Sep},
	pages = {e1500355},
	abstract = {<p>Studies of sensory capacities in past life forms have offered new insights into their adaptations and lifeways. Audition is particularly amenable to study in fossils because it is strongly related to physical properties that can be approached through their skeletal structures. We have studied the anatomy of the outer and middle ear in the early hominin taxa Australopithecus africanus and Paranthropus robustus and estimated their auditory capacities. Compared with chimpanzees, the early hominin taxa are derived toward modern humans in their slightly shorter and wider external auditory canal, smaller tympanic membrane, and lower malleus/incus lever ratio, but they remain primitive in the small size of their stapes footplate. Compared with chimpanzees, both early hominin taxa show a heightened sensitivity to frequencies between 1.5 and 3.5 kHz and an occupied band of maximum sensitivity that is shifted toward slightly higher frequencies. The results have implications for sensory ecology and communication, and suggest that the early hominin auditory pattern may have facilitated an increased emphasis on short-range vocal communication in open habitats.</p>
},
	issn = {2375-2548},
	doi = {10.1126/sciadv.1500355},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/26601261},
	author = {Quam, Rolf and Mart{\'\i}nez, Ignacio and Rosa, Manuel and Bonmat{\'\i}, Alejandro and Lorenzo, Carlos and de Ruiter, Darryl J and Moggi-Cecchi, Jacopo and Conde Valverde, Mercedes and Jarabo, Pilar and Menter, Colin G and Thackeray, J Francis and Arsuaga, Juan Luis}
}
