In 1839, the Silurian System Was Defined Primarily on the Basis

question 24

Multiple Choice

In 1839, the Silurian System was defined primarily on the basis of

• A) the nature of sedimentary rocks lying directly upon ancient crystalline rocks.
• B) seven distinct fossil mammalian faunas of the Paris Basin.
• C) expansion of glaciers at the south pole, which was related to a mass extinction.
• D) trilobites, brachiopods, and crinoids, and as well as corals that formed small reefs.

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Definitions:

Transmission Input

The shaft or component that receives power from the engine and transmits it to the gearbox, initiating the vehicle's drive mechanism.

TranSynd Synthetic Oil

A brand of synthetic transmission fluid designed to provide enhanced protection and longer service intervals for automatic transmissions.

Oil Change Intervals

Specified periods or mileage after which the engine oil should be replaced to ensure optimal engine performance and longevity.