328 CAKBONIFEEOUS FORMATIONS AND FAUNAS OF OOLOKADO. 



CLADOPORA Hall, 1852. 

 Cladopora sp. 



The specimens referred to under this name consist of two hemispherical masses 

 having- a diameter of about 5 mm. , composed of numerous cells, the larger of which 

 are about 1 nmi. in diameter. The cell walls are thin, perforate, and appear to be 

 faintly fluted longitudinally. No tabular have been noticed. Except for the latter 

 character these growths might pass for a small globular species of Famsites, but they 

 more probably represent either tine terminal or the initial portions of a rare and 

 undesci'ibed form, of which we have specimens from Graham, Young Coiintj% Tex., 

 and also from the Trans-Pecos region, Texas. The latter has a dendritic shape, the 

 larger branches attaining a diameter of 20 mn:. These Texas specimens in general 

 appearance resemble coralla in the Devonian which liave been commonly referred " 

 to the genus Sf?'t'atoj)ora, but they show more points of affinity with the type species 

 of Cladopora than with that of Striatopora. They lack the projecting lip of Clad- 

 opora^ which is easily lost by attrition, but they also lack the thickened apertures of 

 Striatopora, which would most likely be preserved. In their present condition the 

 cells open slightly upward and outward without the inferior projection or lip of 

 Cladopora or the stereoplasmic (?) apertural deposit of Striatopoixi. 



The figures of many American species of Striatopora^ strongly suggest that they 

 properly belong ratlier to Cladopora. 



Locality and horizon. — Crested Butte district (station 2305); Maroon conglom- 

 erate. 



CH^TETES Fischer de Waldheim, 1830. 



Chjetetes millepoeaceus Milne-Edwards and Haime. 



1851. Chsdetes milleporaceus. Milne-Edwarda and Haime, Monog. des Polyp. Foss., p. 272. 



Carboniferous: Cumberland Mountains, Tennessee; Newburg, near Evans ville, on the Ohio. 

 1860. Chietetes milleporaceus. Milne-Edwards, Hist. Nat. des Corr., vol. 3, p. 271. 



Carboniferous: United States. 



1876. Chietetes milleporaceus. White, Powell's Eept. Geol. Uinta Mountains, p. 88. 

 Red Wall group: Gypsum Canyon, Colorado River, Utah. 



Lower Aubrey group: Split Mountam Canyon, Green River, Utah. 



1877. Chxletes milleporaceus. AVhite, U. S. Geog. Geol. Surv. W. 100th Mer., Eept., vol. 4, p. 98, pi. 



6, fig. 2a. 



Carboniferous: Virgin Range, southwest of St. George, Utah. 

 1894. Chsetetes milleporaceus. Keyes, Missouri Geol. Surv., vol. 4, p. 123, pi. 14, tigs. 12a, b. 



Upper Coal Measures: Glasgow, Mo. 

 1900. Chastetes milleporaceus. Beede, Univ. Geol. Surv. Kansas, Rept., vol. 6, p. 25, pi. 2, figs. 11, 116. 



Coal Measures: Girard; very abundant in the Oswego limestone, Kansas. 



"Proctor's Kentucky Geol. Surv.; Kentucky Fossil Corals, Davis, 1S8.5, Pt. II. Rominger's Geol. Surv. jMichigan; Lower 

 Peninsula, vol. 3, pt. 2, 1876. 



