What was the most common form of sea life found in Oklahoma?

b. trilobite

Explanation:

Based on fossils found in Oklahoma especially in Coal County where the Lower Devonian formations are located, it is known that the Trilobite was the most common form of sea life in Oklahoma.

Trilobites are extinct and are believed to have been so for over 251 million years which would predate the dinosaurs. They were anthropoids that were believed to have been marine based.

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the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.