From:
Charles Lyell, 1st baronet
To:
Charles Robert Darwin
Date:
[16 Jan 1857]
Source of text:
DAR 205.9: 394
Summary:
Enumerates fossil mammals known in Secondary strata.
Lack of angiosperm plants in rocks older than Chalk is no reason to anticipate rarity of warm-blooded quadrupeds.
Contributor:
Darwin Correspondence Project
