From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
6 Oct 1860
Source of text:
The University of Edinburgh Centre for Research Collections (Lyell collection Coll-203/A3/7: 22)
Summary:
Wonders why the coracoid bone in the flightless Apteryx is so large when the clavicles are reduced. The clavicles are even separate in the ostrich. The large coracoid in reptiles is explained by the connection to the forelimbs.
Contributor:
Darwin Correspondence Project