Fossils discovered by Wood include a huge sample of both terrestrial and freshwater fossil arthropods and early amphibians from the East Kirkton Limestone, and eventually fish and plant fossils from younger strata. Wood and his colleagues published on their initial finds in a 1985 Nature letter. Among the most notable of these early finds were the oldest known harvestman (later described as Brigantibunum) and the oldest known temnospondyl amphibian (later described as Balanerpeton). East Kirkton is perhaps most famous for Westlothiana, a small tetrapod discovered in 1988 and initially reported to be the oldest known reptile in 1989. Wood's excavations at East Kirkton, and then-unnamed Westlothiana, were featured in the first episode of Lost Worlds, Vanished Lives, a 1989 BBC documentary hosted by Sir David Attenborough. Westlothiana has subsequently been reinterpreted as a stem-amniote reptiliomorph, still among the best paradigms of the amphibian-amniote transition.
