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About: Umm Irna Formation     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : geo:SpatialThing, within Data Space : dbpedia.org associated with source document(s)

Type: geo:SpatialThing New Facet based on Instances of this Class

The Umm Irna Formation is a geological formation in Jordan. It is found in several outcrops in Jordan in the area around the eastern shore of the Dead Sea. It is Late Permian (likely Changhsingian) in age, and is the oldest unit in the succession, overlying the Cambrian aged . The formation predominantly consists of sandstones, claystones and mudstones deposited in fluvial and lacustrine conditions. The formation is of considerable paleobotanical interest, as it preserves the earliest known remains of plant groups that would become widespread during the Mesozoic, including Corystosperm seed ferns, represented by the widespread Triassic genus Dicroidium, Zamiineae cycads (cf. Ctenis), podocarp conifers, as well as Bennettitales. Other plant groups present in the formation include Noeggerath