Protozoa - Nassellaria - Ultranaporidae
Original description: Cephalis small, slightly perforate, covered by layer of microgranular silica, with small cephalocone at base of cephalis. Horn short, triradiate with three narrow ridges alternating with three wide grooves, node-like short spine extending out from each ridge at two thirds of horn. Thorax subtriangular in outline, comprised predominantly of pentagonal and hexagonal pore frames. Two well-developed transverse ridges on distal half of thorax. Feet long, massive, triradiate with three narrow ridges alternating with three wide grooves.
Original remarks: Napora proba, n. sp., differs from N. cerromesaensis Pessagno, Whalen, and Yeh by having a horn with rounded apical end.
Etymology: Probus-a-um (Latin, adj.) excellent.
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 propria, Napora pualensis, Napora pyramidalis, Napora relica, Jacus coronatus, Jacus sandspitensis, Jacus clatratus, Jacus isa
Type specimen: NMNS (000133). Its type locality is Suplee-Izee area, OR-589D, which is in a Toarcian marine mudstone/limestone in the Snowshoe Formation of Oregon.
Ecology: passively mobile planktonic omnivore
Distribution:
• Jurassic of United States (2: Oregon collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.