Protozoa - Spumellaria - Angulobracchiidae
Description: Test comprised of small irregular polygonal pore frames without prominent nodes at vertices. Rays unequal in length, increasing gradually in width distally. Two longer rays expanded distally without prominent bulbous tips, one shorter ray terminating in short bifurcating tip with minute spines at distal surface.
Remarks: Sontonaella spongiosa, n. sp.differs from S. blfurcata,n. sp, by lacking well-developed bulbous tips at distal ends of two longer rays, by having three rays unequal in length, and by having a test consisting of small irregular spongy mesh work.
Etymology: Spongiosus-a-um (Latin, adj.) spongy.
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 Sontonaella according to K. Y. Yeh 1987
Sister taxa: Paronaella araneae, Paronaella bandyi, Paronaella beatricia, Paronaella bifida, Paronaella bona, Paronaella botanyensis, Paronaella broennimanni, Paronaella cava, Paronaella claviformis, Paronaella coalescenda, Paronaella communis, Paronaella corpulenta, Paronaella curticrassa, Paronaella denudata, Paronaella fera, Paronaella gemmata, Paronaella grahamensis, Paronaella hirsuta, Paronaella impella, Paronaella inornata, Paronaella isariana, Paronaella kotura, Paronaella mulleri, Paronaella multifera, Paronaella norica, Paronaella notabilis, Paronaella obesa, Paronaella pacofiensis, Paronaella pessagnoi, Paronaella pristidentata, Paronaella pygmaea, Paronaella ravenensis, Paronaella skenaensis, Paronaella skowkonaensis, Paronaella snowshoensis, Paronaella solanoensis, Paronaella speciosa, Paronaella striata, Paronaella trammeri, Paronaella trifoliacea, Paronaella tripla, Paronaella triporosa, Paronaella tubulata, Paronaella turgida, Paronaella ultrabifida, Paronaella venusta, Paronaella yaogusensis, Archaeotriastrum dentatum, Archaeotriastrum mostleri, Sontonaella concinna
Type specimen: NMNS (000057). 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.