Protozoa - Entactinaria - Eptingiidae
Named by Carter.
Original description: Test with small cortical shell, triangular to subtriangular in outline and three medium-sized spines of equal length. Surface of cortical shell slightly convex with large subtriangular to irregularly shaped pore frames and deeply incised pores, sub-round in shape. Pore frame vertices usually with small to medium sized nodes; some groups of pore frames partly surrounded by massive raised ridges. Spines assymetrically arranged; two spines closer together than the third. Spines stout, triradiate and strongly tapering with narrow ridges and wide grooves.
Original remarks: Charlottea hotaoensis n. sp. differs from C. triquetra Whalen & Carter in having a strongly triangular rather than subtriangular shell and less convex shell surfaces. It is likely that C. hotaoensis n. sp. is derived from C. triquetra. In our material, C. triquetra ranges from upper Sinemurian to basal Pliensbachian; C. hotaoensis n. sp. does not range below the Pliensbachian. This new species may also represent the transition between the two eptingiid genera, Charlottea and Perispyridium.
Etymology: This species is named for the Haida village of Hotao on the southwest side of Maude Island, Queen Charlotte Islands, British Columbia.
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 Charlottea according to S. Gorican et al. 2006
Sister taxa: Charlottea amurensis, Charlottea carterae, Charlottea harbridgensis, Charlottea johnsoni, Charlottea penderi, Charlottea proprietatis, Charlottea triquetra, Charlottea weedensis
Type specimen: GSC 111713. Its type locality is Maude Island, west of Ells Bay; GSC loc. C-304566, which is in a Pliensbachian marine limestone in the Fannin Formation of Canada.
Ecology: passively mobile planktonic omnivore
Distribution:
• Jurassic of Canada (15: British Columbia collections), Japan (2)
Total: 17 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.