Life likely to have been present on the land when the Trenchard Formation was being deposited.

No birds, no dinosaurs, no mammals and no grasses on the Earth at this time.

Large trees were abundant, but they were unlike most trees of the present day. They were closer to present day conifers and club mosses. There were no flowering plants at this time. Extraordinarily large arthropods moved over the forested floor and in the air gargantuan insects flew about.