American paleontologist whose synthesis of population genetics with paleontology in his work on fossil mammals contributed to the development of modern evolutionary biology. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
British physician who pioneered the use of ether and chloroform in obstetrics (1847). |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.