Abstract
Introduction
Acknowledgments
Previous work
Stratigraphy
Graneros Shale
Lower barren unit
Thatcher Limestone Member
Upper fossiliferous unit
Regional variation of thickness
Greenhorn Limestone
Lincoln Limestone Member
Hartland Shale Member
Bridge Creek Limestone Member
Supplemental stratigraphic sections
Faunal zonation
Fossil zones and age of Graneros Shale
Fossil zones and age of the Greenhorn Limestone
Zonation in the western interior
Geographic distribution of fossils
Systematic descriptions
Family Ptychoceratidae Meek, 1876
Genus Worthoceras Adkins, 1928
Worthoceras gibbosum Moreman
Worthoceras vermiculum (Shumard)
Family Hamitidae Hyatt, 1900
Genus Stomohamites Breistroffer, 1940
Stomohamites cf. S. Simplex (d'Orbigny)
Genus Hemiptychoceras Spath, 1925
Hemiptychoceras reesidei Cobban and Scott, n. sp.
Genus Puebloites Cobban and Scott, n. gen
puebloites corrugatus (Stanton)
Puebloites spiralis Cobban and Scott, n. sp
Puebloites greenhornensis Cobban and Scott, n. sp
Family Baculitidae Meek, 1876
Genus Sciponoceras Hyatt, 1894
Sciponoceras gracile (Shumard)
Genus Baculites Lamarck, 1799
Baculites cf. B. yokoyamai
Tokunaga and Shimizu
Baculites calamus Morrow
Family Anisoceratidae Hyatt, 1900
Genus Anisoceras Pictet, 1854
Anisoceras cf. A. plicatile (J. Sowerby)
Anisoceras sp
Genus Idiohamites Spath, 1925
Idiohamites sp
Genus Allocrioceras Spath, 1926
Allocrioceras annulatum (Shumard)
Family Turrilitidae Meek, 1876
Genus Turrilites Lamarck, 1801
Turrilites (Turrilites) acutus Passy
Turrilites (Turrilites) acutus
Passy americanus Cobban and Scott, n. subsp
Subgenus Euturrilites Breistroffer, 1953
Turrilites (Euturrilites) scheuchzerianus Bosc
Turrilites (Euturrilites) sp
Family Scaphitidae Meek, 1876
Genus Scaphites Parkinson, 1811
Scaphites sp
Family Desmoceratidae Zittel, 1895
Genus Desmoceras Zittel, 1884
Subgenus Pseudouhigella Matsumoto, 1942
Desmoceras (Pseudoughligella) sp
Family Muniericeratidae Wright, 1952
Genus Tragodesmoceras Spath, 1922
Tragodesmoceras bassi Morrow
Tragodesmoceras sp
Family Engonoceratidae Hyatt, 1900
Genus Epengonoceras Spath, 1924
Epengonoceras dumbli (Cragin) ?
Family Acanthoceratidae Hyatt, 1900
Genus Calycoceras Hyatt, 1900
Calycoceras cf. C. naviculare (Mantell)
Calycoceras leonense (Adkins)
Calycoceras? cantiaurinum (Haas)
Calycoceras? sp
Subgenus Conlinoceras Cobban and Scott, n. subgen
Calycoceras (Conlinoceras) gilberti Cobban and Scott, n. sp
Genus Pseudocalycoceras Thomel, 1969
Pseudocalycoceras dentonense (Moreman)
Genus Tarrantoceras Stephenson, 1955
Tarrantoceras rotatile Stephenson
Genus Acanthoceras Neumayr, 1875
Acanthoceras amphibolum Morrow
Acanthoceras muldoonense Cobban and Scott, n. sp.
Acanthoceras granerosense Cobban and Scott, n. sp.
Genus Euomphaloceras Spath, 1923
Euomphaloceras cf. E cunningtoni (Sharpe)
Euomphaloceras cf. E. lonsdalei (Adkins)
Genus Kanabiceras Reeside and Weymouth, 1931
Kanabiceras septemseriatum (Cragin)
Kanabiceras puebloense Cobban and Scott, n. sp
Genus Metoicoceras Hyatt, 1903
Metoicoceras whitei Hyatt
Metoicoceras cf. M. defordi Young
Genus Watinoceras Warren, 1930
Watinoceras reesidei Warren?
Watinoceras coloradoense (Henderson)
Genus Mammites Laube and Bruder, 1887
Mammites nodosoides (Schlotheim)
Mammites nodosoides (Schlotheim) subsp. wingi Morrow
Mammites? sp
Genus Ampakabites Collignon, 1965
Ampakabites collignoni Cobban and Scott, n. sp
Family Binneyitidae Reeside, 1927
Genus Borissiakoceras Arkhangel'skii, 1916
Borissiakoceras compressum Cobban
Borissiakoceras cf. B. orbiculatum Stephenson
Borissiakoceras sp
Family Vascoceratidae Spath, 1925
Genus Vascoceras Choffat, 1898
Vascoceras sp
Subgenus Greenhornoceras Cobban and Scott, n. subgen
Vascoceras (Greenhornoceras) birchbyi Cobban and Scott, n. sp
Genus Fagesia Pervinquiére, 1907
Fagesia sp
Genus Neoptychites Kossmat, 1895
Neoptychites xetriformis Pervinquiére
Neoptychites cf. N. cephalotus (Courtiller)
Neoptychites sp
Family Tissotiidae Hyatt, 1900
Genus Choffaticeras Hyatt, 1903
Choffaticeras pavillieri (Pervinquiére)
Family Collignoniceratidae Wright and Wright 1951
Genus Collignoniceras Breistroffer, 1947
Collignoniceras woollgari (Mantell)
$ Selected references
Index.