Polycystinea - Nassellaria - Crubidae
Original description: Test as with family, conical to subcylindrical, with constrictions between joints Cephalis conical, with horn. Cephalis and thorax usually sparsely perforate, covered with layer of microgranular silica. Outer layer of abdomen and first one or two post-abdominal chamber covered with small irregular polygonal pore frames, remaining chambers with costae superimposed between each row of pore frames.
Original remarks: Crubus, n. gen., differs from Drulantus, n. gen., by having a horn, and by having a lobated test with outer layer of test wall comprised of small irregular polygonal pore frames on the apical portion of the test.
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
Parent taxon: Crubidae according to K. Y. Yeh 1987
See also Sepkoski 2002
Sister taxa: none
Subtaxa: Crubus chengi Crubus firmus
Distribution:
• Jurassic of United States (8: Oregon collections)
Total: 8 collections including 14 occurrences
Specimen images are retrieved through the ePANDDA API.
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