Cedarina Lochman, 1940

Adrain, Jonathan M., Peters, Shanan E. & Westrop, Stephen R., 2009, The Marjuman trilobite Cedarina Lochman: thoracic morphology, systematics, and new species from western Utah and eastern Nevada, USA, Zootaxa 2218, pp. 35-58 : 43-44

Cedarina Lochman, 1940

Type species. Cedarina vale Lochman, 1940 .

Other species. Cedarina alberta Lochman in Lochman and Duncan, 1944; C. clevensis n. sp.; Piedmontia cordillerae Howell and Duncan, 1939; C. dakotaensis Stitt, 1998 ; C. obtusans Duncan in Lochman and Duncan, 1944; C. prima Lochman in Lochman and Duncan, 1944; C. schachti n. sp.; C. victoria Lochman in Lochman and Duncan, 1944.

Diagnosis. Eyes and palpebral lobes large; thorax (known from only one species) of ten segments with median axial spine on the eighth; micropygous, with the cephalon four or five times the dorsal area of the pygidium.

Discussion. As noted by Lochman (1940, p. 40), other species currently assigned to Cedaria may belong to Cedarina . Cedaria tennesseensis Walcott, 1925 , for example, has pygidia ( Rasetti, 1965, pl. 5, figs. 7, 8) with a low number of axial rings and subquadrate outline that are much more like those of Cedarina than typical Cedaria . Most species of either genus remain difficult to evaluate, however, due to the generally small number of specimens figured with often tiny and inadequate photographs.