Protozoa - Nassellaria - Ultranaporidae
Description: Cephalis relatively large, hemispherical, imperforate, covered with layer of microgranular silica. Horn moderately long, triradiate with three narrow ridges alternating with three narrow grooves; each ridge terminating in long pointed spine. Axial part of horn also terminating in short spine and surrounded by long curved spines extending out from ridges. Thorax subhemispherical in outline, with mixture of tetragonal, pentagonal, and hexagonal pore frames arranged in five to six transverse rows; larger pore frames on middle portion of thorax. Aperture large, subcircular in outline. Feet long, tapering distally, triradiate with three narrow ridges alternating with three grooves, grooves wider proximally and narrow distally.
Etymology: Relicus-a-um (Latin, adj.) outstanding.
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 Napora according to K. Y. Yeh 1987
Sister taxa: Napora antelopensis, Napora aperta, Napora baumgartneri, Napora bearensis, Napora blechschmidti, Napora bukryi, Napora conothorax, Napora cosmica, Napora deweveri, Napora durhami, Napora graybayensis, Napora imperfossa, Napora irregularis, Napora latissima, Napora milleri, Napora opaca, Napora pacifica, Napora parva, Napora proba, Napora propria, Napora pualensis, Napora pyramidalis, Jacus coronatus, Jacus isa, Jacus clatratus, Jacus sandspitensis
Type specimen: NMNS (000137). Its type locality is Suplee-Izee area, OR-600M, which is in a Toarcian marine tuff/limestone in the Hyde Formation of Oregon.
Ecology: passively mobile planktonic omnivore
Distribution:
• Jurassic of Japan (8 collections), Slovenia (1), United States (2: Oregon)
Total: 11 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.