Protozoa - Nassellaria - Bagotidae

Original description: Test spindle-shaped, large, very inflated, usually with five or six post-abdominal chambers. Cephalis small, hemispherical, usually without rudimentary spine. Abdomen, thorax to second post abdominal chamber rapidly increasing in width, remaining post-abdominal chambers rapidly decreasing in width. Cephalis covered with layer of microgranular silica, remaining chambers comprised of two inner layers of variable size of irregular polygonal pore frames (pl .19, fig.6), outer most layer of triangular pore frames. Pore frames thin in rims and thick in sides, with largest pores at middle portion of test, decreasing in size apically and distally. Final post-abdominal chamber terminating in narrow tubular extension.

Original remarks:Remarks: Canutus nitidus n. sp. differs

from C. baumgartneri n. sp., by possessing a very inflated test with extremely small cephalis, and by having a test with two inner layers of variable sized irregular pore frames.

Etymology: Nitidus-a-um (Latin, adj.) sleek, glittering.

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 Canutus according to K. Y. Yeh 1987

Sister taxa: Canutus baumgartneri, Canutus beehivensis, Canutus blomei, Canutus bolesi, Canutus diegoi, Canutus giganteus, Canutus hainaensis, Canutus indomitus, Canutus ingrahamensis, Canutus rennellensis, Canutus rockfishensis, Canutus tipperi

Type specimen: NMNS (000075). 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:

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Specimen images are retrieved through the ePANDDA API.