Chattian

All Sources -
Updated Media sources (1) About encyclopedia.com content Print Topic Share Topic
views updated

Chattian
1. The final age in the Oligocene Epoch, preceded by the Rupelian (Stampian), followed by the Aquitanian, and dated at 29.3–23.3 Ma ( Harland et al., 1989).

2. The name of the corresponding European stage, which is roughly contemporaneous with the upper Zemorrian (N. America), upper Whaingaroan, Duntroonian, and Waitakian (New Zealand), and most of the Janjukian (Australia). It is dated by means of sea-floor spreading rates, small mammals, and plankton.

views updated

Chattian The final stage of the Oligocene Epoch, from about 28.4 to 23.03 Ma ago. It is dated by means of seafloor spreading rates, small mammals, and plankton.

views updated

Chattian The final stage of the Oligocene Epoch. It is dated, at about 32.8–24.6 Ma ago, by means of sea-floor spreading rates, small mammals, and plankton.