...yellow or reddish-yellow sandstone, massive — 60 feet. 3. Passing up into a bed of grayish yellow rather massive sandstone — 50 feet. 4. Ashen-brown...feet. Near the base of these beds are thin layers of a fine grained grayish calcareous sandstone, with a species of Ostrea and fragments of Penta* crinus...

...yellow or reddish-yellow sandstone, massive — 60 feet. 3. Passing up into a bed of grayish yellow rather massive sandstone — 50 feet. 4. Ashen-brown...feet. Near the base of these beds are thin layers of a fine grained grayish calcareous sandstone, with a species of Ostrea and fragments of Pentacrinus asteriscus....

...a yellow or reddish-yellow sandstone, massive—60 feet. 3. Passing up into a bed of grayish yellow rather massive sandstone— 50 feet. 4. Ashen-brown...characters as seen near Lake Como, on the Union Pacific railroad—150 to 200 feet. Near the base of these beds are thin layers of a fine grained grayish calcareous...

...yellow or reddish-yellow sandstone, massive— 60 feet. 3. Passing up into a bed of grayish yellow rather massive sandstone— 50 feet. 4. Ashen-brown...with some layers of brown and yellow fine-grained sanclstone, undoubtedly the usual Jurassic beds with all the lithological characters as seen near Lake...

...yellow or reddish-yellow sandstone, massive — 60 feet. 3. Passing up into a bed of grayish yellow rather massive sandstone — 50 feet. 4. Ashen-brown...nodular or indurated clay, with deep, dull purple bauds ; with some layers of brown and yellow fine-grained sandstone, undoubtedly the usual jurassic...

...north of the Big Thompson, Dr. Hayden found some beds which he described (report, 1800, p. ll'J) as '' undoubtedly the usual Jurassic beds, with all the lithological characters as seen near Lake Como," ai\d containing a •"pecies of ostrea and fragments of Pentacrimts asteriscus, a characteristic •Jurassic...

...north of the Big Thompson, Dr. Hayden found some beds which he described (report, 1860, p. 119) as '• undoubtedly the usual Jurassic beds, with all the lithological characters as seen near Lake Corno," and containing «a species of ostrea and fragments of Pcntacrimis asteriscos, a characteristic;...

...of a series of strata consisting of "ashen-brown nodular or indurated clay, with deep, dull-purple bands, with some layers of brown and yellow fine-grained...on the Union Pacific Railroad — 150 to 200 feet." Marvine and Darton both quote Hayden's report without any further information. No one since appears...

...of a series of strata consisting of "ashen-brown nodular or indurated clay, with deep, dull-purple bands, with some layers of brown and yellow fine-grained...characters as seen near Lake Como, on the Union Pacific Railroad—150 to 200 feet." Marvine and Darton both quote Hayden's report without any further information....