Fig. 6

Poecilocrinus latealatus (Peck), upper Duck Creek Formation, Mortoniceras rostratum Zone (upper Albian); Saginaw Quarry, Fort Worth, Texas. a Cup with base of crown in lateral view, arrows indicate bowls on aboral side of first primibrachials; M11522. b Lateral view of broken cup, partition between upper and lower chamber weakly developed; M11523. c Broken cup with well-developed partition between the two chambers, M11525. d Oblique-adoral view of cup showing articular facets and moderate interfacet processes, flanges to partly broken dish-like wings well developed; M11569. e Adoral view of partly broken cup, lower chamber is visible on top, flanges connecting facets with dish weakly developed; M11528. f Oblique-adoral view of cup with well-developed facets, wings broken away; M11571. g Adoral view of small cup, M11530. h Oblique lateral-adoral view of cup, interfacet processes and flanges to broken dish-like wings well-developed; M11572. i Lateral view of cup with high interfacet processes, M 11535. j Lateral view of cup with comparatively small aboral part, lateral wings broken away, M11534. k Adoral view of cup with unequal lateral wings, M11529. l Adoral view of cup with weak interfacet processes but distinct flanges connecting facets to dish, M11532