莱特州立大学的人类学家威廉·卡梅伦·楚姆利说：“在今天的一般人群中，在这种遗传和环境水平下，我们已经走到了我们力所能及的程度。”
"In the general population today, at this genetic, environmental level, we've pretty much gone as far as we can go," says anthropologist William Cameron Chumlea of Wright State University.
该课题研究人员之一，爱荷华州立大学心理学和统计学教授弗雷德·洛伦茨，研究了550户农村家庭。
Among the researchers on the project that began with 550 rural families was Fred Lorenz, a professor of psychology and statistics at Iowa State University in Ames.
宾夕法尼亚州立大学的艾伦•沃克说：“这些骨骼都属于很古怪奇特的生物。
Alan Walker, of Pennsylvania Sate University, told Science: 'These things were very odd creatures.
来自俄亥俄州立大学的罗伦斯·威特莫尔教授已经为这个发现写好了解说词。
Prof Lawrence Witmer from Ohio University has written a commentary on the finding.
他还担任工商塞德曼学院大峡谷州立大学的艾伦·代尔，密歇根州的院长咨询委员会。
He also serves on the Dean's Advisory Board for the Seidman School of Business at Grand Valley State University in Allendale, Michigan.
他还担任工商塞德曼学院大峡谷州立大学的艾伦·代尔，密歇根州的院长咨询委员会。
He also serves on the Dean's Advisory Board for the Seidman School of Business at Grand Valley State University in Allendale, Michigan.
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