OCR Text |
Show 1895.] MR. F. A. BATHER ON UINTACRINUS. 975 solved, not by renewed speculation, but with the aid of fresh facts and more detailed description. To bring such aid is the object of this paper. It was in 1870 that, through one of the exploring expeditions of Prof. O. C. Marsh (1), an imperfect specimen was found in the eastern Uintah mountains, lying " in a stratum of yellow calcareous shale " and immediately over " a thin layer full of Ostrea congesta, Conrad, a typical Cretaceous fossil," and associated with the scales of a Bergx. This specimen was not sufficient for description, but in 1875 further specimens, somewhat exposed and weathered, were discovered by Prof. Mudge and his party in the middle of Uintacrinus socialis, one of the co-types, from Niobrara Chalk, W . Kansas, now in Yale College Museum. Reproduction of Grin-jell's illustration, Amer. Journ. Sci. vol. xii. pi. iv. fig. 2. The lower portion of a weathered specimen is seen surrounded by a mass of arms belonging to other individuals. Natural size. 62* |