Figure 7. Left (F, H–K) and right (A–E, G) diplodocoid frontals in dorsal view, anterior to the top.
(A–E) shows elements with an anteriorly restricted posterior process of the prefrontal (C24-0), (F–K) have elongated posterior processes (C24-1). Additional states are illustrated from the characters 25, 31, 33. Frontals figured in strict perpendicular view, and scaled to the same anteroposterior length.