Paleontology of the Eureka DistrictU.S. Government Printing Office, 1884 - 298 pages |
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18 miles northwest angle apex Arethusina Atrypa beak Brachiopoda Cambrian Carboniferous Group cardinal characters Chonetes concentric striæ Conrad convex costæ Crepicephalus curved depressed Devonian limestone diameters Dicellocephalus Discina dorsal furrows dorsal valve east side elongate Eureka District Expl eyelobes fauna figs fixed cheeks Formation and localities.-Lower Formation and locality.-Lower Fortieth fossils front frontal limb Genus Geol glabella Hall Pal Hamilton Group hinge-line horizon Hyolithes left valve lines of growth Lingula locality.-Lower portion Lone Mountain Meek moderately convex muscular scars N. Y. State Cab narrow Nevada northwest of Eureka obliquely occurs Olenellus Orthis outer outline Plate xii plications Pogonip Pogonip Group posterior margin Productus Proetus Prospect Mountain Ptychoparia pygidium Rhynchonella ridge right valve Sanguinolites shale Silurian sinus siphuncle slightly small conical hill species specimens Spirifera Strophomena Surface marked Surv transverse Upper Helderberg ventral valve volution White Pine District Whitfield width York