Breda Formation whale bones were found), the Zenderen Member (green, glauconiferous fine sand) and the Delden Member (sandy, glauconite and goethite bearing clay and loam. The Breda Formation corresponds largely with the Berchem Formation of northern Belgium. Breda Formation The Breda Formation (; abbreviation: BR) is a geologic formation in the subsurface of the Netherlands. The formation consists of marine glauconiferous sands and clays that were deposited during the Miocene epoch. Although the formation is not very rich in fossils, sometimes bones of fishes, mammals ("Leptophoca cf. proxima", "Protophocaena minima"), shells and shark teeth (a.o of Megalodon) are found. The Breda Formation
Breda heiress of his line, Johanna of Polanen (1392–1445), married Engelbert I of Nassau (1370–1442; his sarcophagus is in the Grote Kerk in Breda). Through her, the city came into the possession of the House of Nassau, where it remained until 1795, passing to William I of Orange (1533–1584), stadtholder of Holland, Zeeland, and Utrecht and leader of the Dutch revolt. Thus, the baron of Breda was also Count of Nassau in the Holy Roman Empire, Prince of Orange, and stadtholder of the Dutch Republic (from 1572–1650, 1672–1702, 1747–1795). Breda remained part of the barony of Breda until it was captured