Fauna of the Morrow Group 
99 
than C. americoMUS Weller and lacking the strongly wrinkled 
epitheca of (7. bennetti Beede. 
Horizon and locality. Morrow formation: near Ft. Gibson, 
Oklahoma (Stations 296 and 301). 
CHAETETIDA^ 
Genus CHAETETES Fischer 
Chaetetes milleporaceous Milne-Edwards & Haime 
1851. Chaetetes milleporaceous. Milne-Edwards and Haime, Mon. des 
Polyp. Foss., p. 272. 
Carboniferous: Cumberland Mountains, Tennessee; Newburg, near 
Evansville on the Ohio. 
1860. Chaetetes milleporaceous. Milne-Edwards and Haime, Hist. Nat. 
des Corr., vol. 3, p. 271. 
Carboniferous : United States. 
1876. Chaetetes milleporaceous. White, Powell’s Geol. Rep. Uinta Mts., 
p. 88. 
Red Wall Group: Gypsum Canyon, Colorado River, Utah. 
Lower Aubrey Group: Split Mountain Canyon, Green River, Utah. 
1877. Chaetetes millepraceous. White, U. S. Geog. Surv. west of 100th 
Merid., vol. 4, p. 98, pi. 6, fig. 2a. 
Carboniferous: Virgin Range, southwest of St. George, Utah. 
18’94. Chaetetes milleporaceous. Keyes, Mo. Geol. Surv., vol. 4, p. 123, 
pi. 14, figs. 12a-b. 
Upper Coal Measures: Glasgo, Missouri. 
1900. Chaetetes milleporaceous. Beede, Univ. Geol. Surv. Kans., vol. 6, 
p. 25, pi. 2, figs. 11-llb. 
Coal Measures: Girard, Kansas; very abundant in the Oswego 
limestone. 
1903. Chaetetes milleporaceous. Girty, Prof. Paper, U. S. Geol. Surv., 
No. 16, p. 328. 
Middle portion of Hermosa formations: San Juan region, Colorado. 
Maroon conglomerate: Crested Butte district, Colorado. 
1904. Chaetetes milleporaceous. Girty, Prof. Paper, U. S. Geol. Surv., No. 
21, p. 52, pi. 11, fig. 2. 
Virgin Range, southwest of St. George, Utah. 
Naco limestone: Bisbee quadrangle, Arizona. 
Only one specimen of this species is present in the Morrow 
collections. It is an irregular mass, 30 by 40 by 50 mm. in size, 
apparently incomplete on all surfaces. The corallites are poly- 
gonal in cross-section, very commonly with one diameter longer 
than the others, and in most cases attain a diameter of 0.3 or 
0.4 mm. In longitudinal section the tabulae appear to be situ- 
ated quite regularly about one diameter apart or a little less 
