Barosaurus lentus (Sundance Sea Stratigraphy)

Stratigraphic zones two to five composite term Barys and Saurus early Tithonian stage of the Jurassic in the floodplains of the ancient Sundance Sea the structure of the cervical vertebrae allowed lateral flexibility but restricted vertical it swept its neck in long arcs at ground level moderate blood pressure, radiating excess body heat the longest neck and the longest tail the chevron bones lining the underside forked with a prominent forward spike protruding neural spines not complex dorsal into cervical, column never found peglike teeth confined to the front of the jaw a single carpal bone in the wrist digitigrade, manus adorned with a large claw