Summary

1911 Encyclopædia Britannica, Volume 21… (1911)

These limestones and shales contain a distinct fauna which appears for the first time in the Midlands, characterized by Pterinopecten papyraceus, Posidoniella laevis, Posidonomya Becheri, Posidonomya membranacea, N omismoceras roliforme and Glyphioceras striatus. Immediately below beds with this fauna are thin limestones with Proiecanites compress us, Strabaceras bisulcatus, many trilobites, and corals referable to the genera Cyathaxonia, Zaphrentis and Amplexizaphrenlis.
Source: Wikisource

Get perspective with Kwize: daily news enlightened by great literature