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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