Protozoa - Actinommacea - Xiphostylidae
Original description: Cortical shell large, spherical in outline, with two polar spines approximately equal in length. Shell comprised of small pentagonal and hexagonal pore frames with thin rims and deep walls; small pointed nodes at pore frame vertices. Spines relatively short (less than diameter of shell), and fairly constant in width. Spines triradiate with wide rounded ridges and narrow grooves; ridges terminate with small thorns, raised at right angles to axis of spine. Spine tips circular in axial section.
Original remarks: Xiphostylus duvalensis n. sp. differs from X. simplus Yeh in having spines whose ridges terminate in small thorns.
Etymology: Species named for Duval Rocks, west of type locality on north shore of Cumshewa Inlet, Queen Charlotte Islands.
Full reference: S. Gorican, E. S. Carter, P. Dumitrica, P. A. Whalen, R. S. Hori, P. De Wever, L. O'Dogherty, A. Matsuoka, and J. Guex. 2006. Catalogue and systematics of Pliensbachian, Toarcian and Aalenian radiolarian genera and species 446
Belongs to Xiphostylus according to S. Gorican et al. 2006
Sister taxa: Xiphostylus ardea, Xiphostylus asper, Xiphostylus communis, Xiphostylus fragilis, Xiphostylus gasquetensis, Xiphostylus halli, Xiphostylus inclinatus, Xiphostylus logdellensis, Xiphostylus simplus, Xiphostylus whalenae
Type specimen: GSC 111788. Its type locality is Cumshewa Inlet, Moresby Island, GSC loc. C-080610, which is in a Pliensbachian marine shale/limestone in the Fannin Formation of Canada.
Ecology: passively mobile planktonic omnivore
Distribution: found only at Cumshewa Inlet, Moresby Island, GSC loc. C-080610
Specimen images are retrieved through the ePANDDA API.
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