Fig. 5

Poecilocrinus latealatus (Peck), upper Duck Creek Formation, Mortoniceras rostratum Zone (upper Albian); Saginaw Quarry, Fort Worth, Texas. Ontogenetic series of cups in lateral (a, b, i–l, q–r) and oblique-adoral view (c–h, m–p). a M11567, b M11583, c M11562, d M11578, e M11547, f M11559, g M11584, h M11574, i M11565, j M11540, k M11557, l M11581, m M11576, n M11527, o M11573, p M11550, q M11551, r M11553