Complex sentence: His research focuses on the archaeological applications of information technology and on Anglo-Saxon and Viking archaeology, and has led excavations at Cottam, Cowlam, Burdale, Wharram Percy, and Heath Wood barrow cemetery.
Split into simpler sentences: His research focuses on the archaeological applications of information technology, as well as on Anglo-Saxon and Viking archaeology. He has led excavations at Cottam, Cowlam, Burdale, Wharram Percy, and Heath Wood barrow cemetery.