The distal end is rounded in cranial profile and sub-rectangular in distal cross-section; compressed cranio-caudally, which reflects a more expanded transverse margin; transversely expanded more than the proximal end, which is only expanded medially.
Their perspective is both broad and deep.
It is sub-triangular and medially overlapped by sclerite 2. Sclerite 4 lies latero-distally and is sub-rectangular with rounded edges.
Sclerite 3 lies anteriorly in the articulation membrane and is sub-rectangular.
Sclerite 2 lies medially and is sub-rectangular being latero-medially orientated.
The coronoid of Acrocanthosaurus is lateromedially-flattened like the supradentary, sub-rectangular, and split anteriorly by a narrow sulcus that separates the element into dorsal and ventral processes.
Sclerite 1 is centrally located, sub-rectangular and latero-medially oriented.
4. Mt I broader with a longitudinal muscle scar; Mt II distal condyles divergent; Mt III sub-rectangular proximal end.
The sub-rectangular sclerite 6 is sited distal to sclerite 5 and is flanked latero-posteriorly by sclerite 7 and medially by the elongated sclerite 8.
The sub-rectangular sclerite 3 lies laterally in the articulation membrane between sclerite 1 and the limb stem.
