Paleosols of Tournaisian tetrapod-bearing strata in Scotland are described.

Four pedotypes are identified: Entisols, Inseptisols, gleyed Inseptisols, Vertisols.

Coastal floodplain with diverse mosaic of habitats include marsh and forest.

Tetrapods lived in a tropical seasonal wetland with rainfall of 1000–1500 mm/year.

Increased terrestriality in tetrapods may be driven by a move to seasonal wetlands.