Fig. 14

Cups of Roveacrinus alatus Douglas (d, p, t) and Roveacrinus spinosus Peck (a–c, e–o, q–s). Del Rio Formation (lower Cenomanian), Dottie Lynn Locality, Fort Worth, Texas. a Lateral view of smallest cup, M11706. b Lateral view of cup with prominent radial flanges, M11700. c Aboral view of broken cup showing partition with central opening and smaller radial openings at periphery, M11702. d Aboral view of cup of R. alatus, M11708. e Lateral view of cup with prominent radial flanges and bulbous aboral part, M11723. f Adoral-lateral view of cup with equal radial processes, M11711. g Adoral-lateral view of cup with unequal, broad radial processes; M11712. h Adoral view of cup with only two narrow radial processes, M11714. i Adoral view of cup with equal, broad radial processes; M11710. j. Lateral view of cup with short processes and irregular radial flanges, M11701. k Lateral view of cup well-developed radial processes and flanges reaching beyond bulbous aboral apex, M11704. l Lateral view of cup with irregular, short processes and moderately produced radial flanges, M11727. m Lateral view of cup with duckbill-shaped radial processes, M11713. n Part of cup with strongly bent concave process and wide articular facet, M11709. o Adoral-lateral view of cup with single radial process, M11703. p Adoral view of cup of R. alatus with unequal radial extensions, articular facets badly preserved; M11705. q Lateral view of cup with prominent radial extensions and flanges, one high interradial process; M11715. r Lateral view of cup with widely extended processes and flanges, M11716. s Cup with one wide and strong radial process, M11699. t Lateral view of cup of R. alatus with thin radial flanges supported by lateral wing; M11707