cenozoic

You are absolutely correct that over the time period that life has existed on earth in complex, multicellular, differentiated-tissue forms (the paleozoic through the cenozoic) co2 concentrations have been much higher than they have been recently.

Wonk Room » Stumped By Science: Michele Bachmann Calls CO2 ‘Harmless,’ ‘Negligible,’ ‘Necessary,’ ‘Natural’ 2009

I would like to return to the question asked by C. W. Magee in #5: “if temperature only slightly increases rainfall, then why does paleoclimactic data indicate more widespread rainforests in pre-glacial cenozoic?”

The Volokh Conspiracy » Economic Climate Change Denialism: 2009

Still, there remains the general division into the palæozoic, the mesozoic, and the cenozoic strata; the first are characterized by their remains of carboniferous plants; the second by traces of amphibious and fish life; the third show remnants of mammals.

The Catholic Encyclopedia, Volume 7: Gregory XII-Infallability 1840-1916 1913

Cenolithic group, or cenozoic (tertiary) group of strata: Xb. Oligocene (old tertiary): 30.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

Cenolithic group, or cenozoic (tertiary) group of strata: Xa.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

Cenolithic group, or cenozoic (tertiary) group of strata: Xb. Oligocene (old tertiary): 29.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

Cenolithic group, or cenozoic (tertiary) group of strata: Xa.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

Cenolithic group, or cenozoic (tertiary) group of strata: XI.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

Cenolithic group, or cenozoic (tertiary) group of strata: XII.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

Cenolithic group, or cenozoic (tertiary) group of strata: Xa.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876