Protozoa - Nassellaria - Eucyrtidiidae
Original description: Test small, conical in shape, usually four to five post-abdominal chambers sparsely perforate, covered by layer of microgranular silica. Post-abdominal chambers having small polygonal pore frames. Pore frmaes increasing in size distally, irregular on apical portion tending to be aligned in a regular fashion on final one or two post-abdominal chamber. Final post-abdominal chamber closed by large, latticed, subellipsoidal cap.
Etymology: This species is named for Mr. Walter M. Six, Jr. for his help on this project.
Full reference: K. Y. Yeh. 1987. Taxonomic Studies of Lower Jurassic Radiolaria from East-Central Oregon. National Museum of Natural Science Special Publications 2:1-169
Belongs to Lantus according to K. Y. Yeh 1987
Sister taxa: Lantus intermedius, Lantus obesus, Lantus praeobesus, Lantus sutnal
Type specimen: NMNS (000143). Its type locality is Suplee-Izee area, OR-600A, which is in a Toarcian marine tuff/limestone in the Hyde Formation of Oregon.
Ecology: passively mobile planktonic omnivore
Distribution:
• Jurassic of Canada (11: British Columbia collections), Japan (2), United States (4: Oregon)
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.