supermedial
/suːpəˈmiːdɪəl/ /sjuːpəˈmiːdɪəl/adjective
That is above the middle or median in position, degree, or quality; supramedial; Geology designating the series of geological deposits lying between the principal coal measures and the overlying chalk beds of England, corresponding broadly to the period from the Permian to the Cretaceous inclusive (now historical ).
Origin
Early 19th century. From super- + medial.