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Heteromorphs Quick Identification Gallery
Kingdom Animalia Linnaeus, 1758
Phylum
Mollusca Linnaeus, 1758
Class Cephalopoda Cuvier, 1797
Order Ammonoidea Zittel, 1884
Suborder Phylloceratina Arkell, 1950
Superfamily Phyllocerataceae
Zittel, 1884
Family Phylloceratidae Zittel, 1884
Subfamily Phylloceratinae Zittel, 1884
Genus Phylloceras Suess,
1865
Subgenus Hypophylloceras Salfeld,
1924
Phylloceras (Hypophylloceras) velledae (Michelin,
1834) Madagascar
Subfamily Calliphylloceratinae
Spath, 1927
Genus Ptychophylloceras Spath, 1927
Subgenus Semisulcatoceras
Joly, 2000
Ptychophylloceras (Semisulcatoceras) semisulcatum
(d'Orbigny, 1841) France
Superfamily Lytocerataceae Neumayr,
1875
Family Lytoceratidae Neumayr, 1875
Subfamily Lytoceratinae Neumayr,
1875
Genus Lytoceras Suess, 1865
Subgenus Argonauticeras Anderson,
1938
Lytoceras (Argonauticeras) argonautarum (Anderson,
1902) Madagascar
Superfamily Tetragonitaceae Hyatt,
1900
Family Gaudryceratidae Spath, 1927
Genus Eogaudryceras Spath,
1927
Subgenus Eotetragonites Breistroffer,
1947
Eogaudryceras (Eotetragonites) umbilicostriatus Collignon,
1949 Madagascar
Superfamily
Haplocerataceae
Family Oppeliidae H. Douvillé, 1890
Subfamily Aconeceratinae Spath, 1923
Genus Aconeceras Hyatt, 1903
Aconeceras nisoides (Sarasin, 1893) Madagascar
Superfamily
Perisphinctaceae Steinmann, 1890
Family Holcodiscidae Spath, 1923
Genus Holcodiscus Uhlig, 1882
Holcodiscus caillaudianus (d'Orbigny, 1841) France
Family Neocomitidae Salfeld, 1921
Subfamily Neocomitinae Salfeld, 1921
Genus Neocomites Uhlig, 1905
Subgenus Neocomites Uhlig, 1905
Neocomites (Neocomites) subquadratus Sayn,
1901 France
Superfamily Endemocerataceae Schindewolf, 1966
Family Pulchelliidae H. Douvillé, 1890
Subfamily Pulchelliinae
Genus Nicklesia Hyatt, 1903
Nicklesia pulchella (d'Orbigny, 1841) France
Genus Pulchellia Uhlig, 1883
Subgenus Heinzia Sayn, 1891
Pulchellia (Heinzia) caicedi (Karsten, 1856)
France
Subfamily Psilotissotiinae
Genus Subpulchellia Hyatt, 1903
Subpulchellia oehlerti (Nicklès, 1894)
Genus Kotetishvilia Vermeulen, 1997
Kotetishvilia compressissima (d'Orbigny, 1841) France
Superfamily
Desmocerataceae de Grossouvre, 1894
Family Desmoceratidae Zittel, 1895
Subfamily Beudanticeratinae Breistroffer, 1953
Genus Beudanticeras Hitzel, 1905
Subgenus Beudanticeras Hitzel, 1905
Beudanticeras (Beudanticeras) newtoni Casey,
1961 England
Beudanticeras (Beudanticeras) ambanjabense
Collignon, 1963 Madagascar
Subfamily Puzosiinae Spath, 1922
Genus Parapuzosia Nowak, 1913
Subgenus Parapuzosia Nowak, 1913
Parapuzosia (Parapuzosia) americana Scott
and Moore, 1928 United States
Parapuzosia (Parapuzosia) seppenradensis (Landois,
1895) Germany
Genus Puzosia Bayle, 1878
Subgenus Anapuzosia Matsumoto, 1954
Puzosia (Anapuzosia) saintoursi (Collignon,
1963) Madagascar
Subfamily Desmoceratinae Zittel, 1895
Genus Desmoceras Zittel, 1884
Subgenus Moremanoceras Cobban, 1972
Desmoceras (Moremanoceras) scotti (Moreman,
1942) United States
Genus Desmoceras Zittel, 1884
Subgenus Latidorsella Jacob, 1907
Desmoceras (Latidorsella) latidorsatum (Michelin,
1838) Madagascar
Genus Melchiorites Spath, 1923
Melchiorites mitsinjensis Collignon, 1963 Madagascar
Subfamily Barremitinae Breskovski, 1977
Genus Barremites Kilian, 1913
Subgenus Raspailiceras Wright, 1956
Barremites (Raspailiceras) charrieri (d’Orbigny,
1840) France
Genus Subtorcapella
Subtorcapella defayi Vermeulen, 2002 France
Genus Spitidiscus Kilian, 1910
Plesiospitidiscus fasciger Thieuloy, 1972 France
Family Pachydiscidae Spath, 1922
Subfamily Pachydiscinae Spath, 1922
Genus Canadoceras Spath, 1922
Canadoceras mysticum Matsumoto, 1959 British
Columbia
Genus Menuites Spath, 1922
Menuites oralensis Cobban and Kennedy, 1993 United
States
Genus Eopachydiscus Wright, 1955
Eopachydiscus marcianus (Shumard, 1854) United
States
Genus Pachydiscus Zittel, 1884
Subgenus Pachydiscus Zittel, 1884
Pachydiscus (Pachydiscus) travisi (Adkins,
1929) United States
Pachydiscus (Pachydiscus) paulsoni (Young,
1963) United States
Family Cleoniceratidae Whitehouse, 1926
Genus Cleoniceras Parona and Bonarelli, 1897
Subgenus Grycia Imlay, 1961
Cleoniceras (Grycia) besairiei (Collignon,
1949) Madagascar
Genus Arcthoplites Spath, 1925
Subgenus Arcthoplites Casey, 1999
Arcthoplites jachromensis (Nikitin, 1888) Spitsbergen
Superfamily
Hoplitaceae Douvillé, 1890
Family Engonoceratidae Hyatt, 1900
Genus Engonoceras Neumayr and Uhlig, 1881
Engonoceras serpentinum (Cragin, 1900) United
States
Engonoceras hilli Böhm, 1898 United
States
Engonoceras stolleyi Böhm, 1898 United
States
Genus Metengonoceras Hyatt, 1903
Metengonoceras dumbli (Cragin, 1893) United
States
Family Placenticeratidae Hyatt, 1900
Genus Placenticeras Meek, 1876
Placenticeras intercalare Meek and Hayden, 1860 United
States
Placenticeras meeki Böhm, 1828 United
States
Placenticeras minor Kennedy and Cobban, 1994 United
States
Placenticeras placenta DeKay, 1828 United
States
Placenticeras syrtale (Morton, 1834) United
States
Placenticeras planum Hyatt, 1903 United
States
Placenticeras cumminsi Cragin, 1893 United
States
Genus Hoplitoplacenticeras Paulcke, 1907
Subgenus Hoplitoplacenticeras Paulcke, 1907
Hoplitoplacenticeras (Hoplitoplacenticeras) marroti (Coquand,
1859) United States
Family Schloenbachiidae Parona and Bonarelli, 1897
Genus Schloenbachia Neumayr, 1875
Schloenbachia varians (J. Sowerby, 1817) Kazakhstan
Schloenbachia coupei (Brongniart, 1822) Kazakhstan
Family Hoplitidae H. Douvillé, 1890
Subfamily Anahoplitinae Breistroffer, 1947
Genus Anahoplites Hyatt, 1900
Anahoplites planus (Mantell, 1822) England
Subfamily Hoplitinae H. Douvillé, 1890
Genus Hoplites Neumayr, 1875
Subgenus Hoplites Neumayr, 1875
Hoplites (Hoplites) dentatus (J. Sowerby,
1821) France
Hoplites (Hoplites) maritimus Owen, 1971
England
Hoplites (Hoplites) paronai Spath, 1925
France
Genus Dimorphoplites Spath, 1925
Dimorphoplites chloris Spath, 1926 England
Dimorphoplites aff. tethydis (Bayle, 1878) England
Genus Epihoplites Spath, 1925
Subgenus Metaclavithes Casey, 1965
Epihoplites (Metaclavithes) trifidus (Spath,
1923) England
Genus Euhoplites Spath, 1925
Euhoplites aff. opalinus Spath, 1930
England
Euhoplites inornatus Spath, 1930 England
Superfamily
Acanthocerataceae Grossouvre, 1894
Family Brancoceratidae Spath, 1934 (1900)
Subfamily Brancoceratinae Spath, 1934
Genus Hysteroceras Hyatt, 1900
Hysteroceras orbignyi (Spath, 1922) England
Subfamily Mojsisovicziinae Hyatt, 1903
Genus Oxytropidoceras Stieler, 1920
Subgenus Oxytropidoceras Stieler, 1920
Oxytropidoceras (Oxytropidoceras) multifidum (Steinmann,
1881) Peru
Oxytropidoceras (Oxytropidoceras) powelli (Young,
1966) United States
Oxytropidoceras (Oxytropidoceras) supani (Lasswitz,
1904) United States
Subgenus Mirapelia Cooper, 1982
Oxytropidoceras (Mirapelia) texanum (Young,
1966) United States
Subgenus Adkinsites Spath, 1931
Oxytropidoceras (Adkinsites) diazi Young, 1966
United States
Oxytropidoceras (Adkinsites) bravoensis (Böse,
1910) United States
Genus Dipoloceras Hyatt, 1900
Subgenus Dipoloceras Hyatt, 1900
Dipoloceras (Dipoloceras) cristatum
(Brongniart in Cuvier and Brongniart, 1822) England & US
Dipoloceras (Dipoloceras) tarrantense
Scott, 1928 United States
Subfamily Mortoniceratinae H. Douvillé, 1912
Genus Mortoniceras Meek, 1876
Subgenus Mortoniceras Meek, 1876
Mortoniceras (Mortoniceras) vespertinum (Morton,
1834) United States
Mortoniceras (Mortoniceras) fallax (Breistroffer,
1940) France
Mortoniceras (Mortoniceras) rostratum (J.
Sowerby, 1817) France
Mortoniceras (Mortoniceras) inflatum (J.
Sowerby, 1818) United States
Mortoniceras (Mortoniceras) equidistans (Cragin,
1893) United States
Mortoniceras (Mortoniceras) whitneyi (Young,
1957) United States
Subgenus Angolaites Spath, 1932
Mortoniceras (Angolaites) drakei (Young,
1957) United States
Mortoniceras (Angolaites) wintoni (Adkins,
1920) United States
Genus Elobiceras Spath, 1921
Subgenus Craginites Young, 1957
Elobiceras (Craginites) serratescens (Cragin,
1893) United States
Family Lyelliceratidae Spath, 1921
Subfamily Lyelliceratinae Spath, 1921
Genus Lyelliceras Spath, 1922
Lyelliceras lyelli (d'Orbigny, 1841) Peru
Family Flickiidae Adkins, 1928
Subfamily Salaziceratinae Kennedy and Wright, 1984
Genus Salaziceras Hébert and Munier-Chalmas, 1875
Salaziceras salazacensis (Hébert and Munier-Chalmas, 1875)
France
Subfamily Flickiinae Adkins, 1928
Genus Adkinsia Böse, 1928
Adkinsia bosquensis (Adkins, 1928) United
States
Family Acanthoceratidae Grossouvre, 1894
Subfamily Stoliczkaiinae Breistroffer, 1953
Genus Stoliczkaia Neumayr, 1875
Subgenus Stoliczkaia Neumayr, 1875
Stoliczkaia (Stoliczkaia) dispar (d'Orbigny,
1841) France
Stoliczkaia (Stoliczkaia) blancheti (Pictet
and Campiche, 1859) France
Subgenus Lamnayella Wright and Kennedy, 1978
Stoliczkaia (Lamnayella) crotaloides (Stoliczka,
1864) United
States
Subfamily Acanthoceratinae Grossouvre, 1894
Genus Calycoceras Hyatt, 1900
Subgenus Newboldiceras Thomel, 1972
Calycoceras (Newboldiceras) asiaticum (Jimbo,
1894) Morocco
Genus Acanthoceras Neumayr, 1875
Acanthoceras rhotomagense (Brongniart in Cuvier and Brongniart, 1822)
England
Genus Conlinoceras Cobban and Scott, 1972
Conlinoceras tarrantense (Adkins, 1928) United
States
Genus Watinoceras Warren, 1930
Watinoceras coloradoense (Henderson, 1908) United
States
Subfamily Euomphaloceratinae Cooper, 1978
Genus Euomphaloceras Spath, 1923
Euomphaloceras septemseriatum (Cragin, 1893) United
States
Subfamily Mantelliceratinae Hyatt, 1903
Genus Graysonites Young, 1958
Graysonites sp. juv. United
States
Subfamily Mammitinae Hyatt, 1900
Genus Mammites Laube and Bruder, 1887
Mammites nodosoides (Schlüter, 1871) Morocco
Genus Metoicoceras Hyatt, 1903
Metoicoceras geslinianum (d'Orbigny, 1850) United
States
Genus Spathites Kümmel and Decker, 1954
Subgenus Spathites Kümmel and Decker, 1954
Spathites (Spathites) rioensis Powell,
1963 United States
Family Vascoceratidae H. Douvillé, 1912
Genus Fagesia Pervinquière, 1907
Fagesia levis Renz, 1982 Morocco
Family Sphenodiscidae Hyatt, 1900
Subfamily Sphenodiscinae Hyatt, 1900
Genus Sphenodiscus Meek, 1871
Sphenodiscus lobatus (Tuomey, 1856) United
States
Sphenodiscus pleurisepta (Conrad, 1857) United
States
Genus Coahuilites Böse, 1928
Coahuilites sheltoni Böse, 1928 United
States
Family Collignoniceratidae Wright and Wright, 1951
Subfamily Collignoniceratinae Wright and Wright, 1951
Genus Collignoniceras Breistroffer, 1947
Collignoniceras woollgari regulare Cobban and Hook, 1980 United
States
Genus Prionocyclus Meek, 1876
Prionocyclus novimexicanus (Marcou, 1858) United
States
Prionocyclus bosquensis Kennedy, 1988 United
States
Genus Prionocycloceras Spath, 1926
Prionocycloceras gabrielense Young, 1963 United
States
Subfamily Barroisiceratinae Basse, 1947
Genus Barroisiceras de Grossouvre, 1894
Subgenus Barroisiceras de Grossouvre, 1894
Barroisiceras (Barroisiceras) onilahyense
Basse, 1947 Madagascar
Subfamily Texanitinae Collignon, 1948
Genus Paratexanites Collignon, 1948
Paratexanites sellardsi Young, 1963 United
States
Genus Texanites Spath, 1932
Subgenus Texanites Spath, 1932
Texanites (Texanites) gallicus Collignon,
1948 United States
Subgenus Plesiotexanites Matsumoto, 1970
Texanites (Plesiotexanites) stangeri
densicostus (Spath, 1921) United
States
Texanites (Plesiotexanites) shiloensis Young,
1963 United
States
Genus Menabites Collignon, 1948
Subgenus Bererella Collignon, 1948
Menabites (Bererella) walnutensis Young, 1963 United
States
Subgenus Australiella Collignon, 1948
Menabites (Australiella) pattoni (Young,
1963) United States
Subgenus Delawarella Collignon, 1948
Menabites (Delawarella) delawarensis (Morton,
1830) United States
Menabites (Delawarella) vanuxemi (Morton,
1830) United States
Superfamily Ancylocerataceae Gill, 1871
Family Ancyloceratidae Gill, 1871
Subfamily Crioceratinae Gill, 1871
Genus Crioceratites Léveillé, 1837
Subgenus Crioceratites Léveillé, 1837
Crioceratites (Crioceratites) loryi (Sarkar,
1955) France
Subgenus Paracrioceras Spath, 1924
Crioceratites (Paracrioceras) thiollierei (Astier,
1851) France
Subfamily Helicancylinae Hyatt, 1894
Genus Acrioceras Hyatt, 1900
Subgenus Dissimilites Sarkar, 1954
Acrioceras (Dissimilites) dissimilis
(d'Orbigny, 1842) France
Family Hemihoplitidae Spath, 1924
Genus Hemihoplites Spath, 1924
Hemihoplites rusticus Vermeulen, 1996 France
Superfamily
Turrilitaceae Gill, 1871
Family Anisoceratidae Hyatt, 1900
Genus Anisoceras Pictet, 1854
Anisoceras perarmatum Pictet and Campiche, 1861 United
States
Genus Idiohamites Spath, 1925
Idiohamites tuberculatus (J. Sowerby, 1818) England
Idiohamites fremonti (Marcou, 1858) United
States
Genus Allocrioceras Spath, 1926
Allocrioceras annulatum (Shumard, 1860) United
States
Allocrioceras hazzardi Young, 1963 United
States
Family Hamitidae Gill, 1871
Genus Hamites Parkinson, 1811
Hamites subrotundus Spath, 1941 England
Genus Metaptychoceras Spath, 1926
Metaptychoceras reesidei (Cobban and Scott, 1973) United
States
Family Turrilitidae Gill, 1871
Genus Ostlingoceras Hyatt, 1900
Subgenus Ostlingoceras Hyatt, 1900
Ostlingoceras (Ostlingoceras) puzosianum (d'Orbigny,
1842) France
Genus Mariella Nowak, 1916
Subgenus Mariella Nowak, 1916
Mariella (Mariella) bergeri (Brongniart
in Cuvier and Brongniart, 1822) France
Mariella (Mariella) gresslyi (Pictet and
Campiche, 1861) France
Mariella (Mariella) worthensis (Adkins
and Winton, 1920) United States
Subgenus WintoniaAdkins, 1928
Mariella (Wintonia) brazoensis (Roemer,
1849) United States
Mariella (Wintonia) rhacioformis (Clark,
1965) United States
Family Nostoceratidae Hyatt, 1894
Genus Nostoceras Hyatt, 1894
Subgenus Bostrychoceras Hyatt, 1900
Nostoceras (Bostrychoceras) polyplocum
(Roemer, 1841) United
States
Subgenus Nostoceras Hyatt, 1894
Nostoceras (Nostoceras) hyatti Stephenson,
1941 United States
Subgenus Didymoceras Hyatt, 1894
Nostoceras (Didymoceras) binodosum (Kennedy
and Cobban, 1993) United States
Family Diplomoceratidae Spath, 1926
Genus Glyptoxoceras Spath, 1925
Glyptoxoceras aquisgranense (Schlüter, 1872) United
States
Family Baculitidae Gill, 1871
Genus Sciponoceras Hyatt, 1894
Sciponoceras baculoides (Mantell, 1822) United
States
Sciponoceras gracile (Shumard, 1860) United
States
Genus Baculites Lamarck, 1799
Baculites grandis Hall and Meek, 1854 United
States
Baculites ovatus Say, 1820 United
States
Baculites undatus Stephenson, 1941 United
States
Baculites claviformis Stephenson, 1941 United
States
Baculites taylorensis Adkins, 1929 United
States
Baculites mclearni Landes, 1940
United States
Baculites compressus Say, 1820 United
States
Baculites yokoyamai Tokunaga and Shimizu, 1926 United
States
Superfamily
Scaphitaceae Gill, 1871
Family Scaphitidae Gill, 1871
Subfamily Otoscaphitinae Wright, 1953
Genus Worthoceras Adkins, 1928
Worthoceras vermiculus (Shumard, 1860) United
States
Subfamily Scaphitinae Gill, 1871
Genus Eoscaphites Breistroffer, 1947
Eoscaphites subevolutus (Böse, 1928) United
States
Genus Scaphites Parkinson, 1811
Scaphites hugardianus d'Orbigny, 1842 France
Scaphites hippocrepis (Dekay, 1827) Form III Cobban, 1969
United States
Scaphites warreni Meek and Hayden, 1860 United
States
Genus Hoploscaphites Nowak, 1911
Hoploscaphites nicollettii (Morton, 1849) United
States
Genus Trachyscaphites Cobban and Scott, 1964
Trachyscaphites spiniger (Schlüter, 1872)
United States
Genus Discoscaphites Meek, 1871
Discoscaphites conradi (Morton, 1834) United
States
Discoscaphites gulosus (Morton, 1834) United
States
Genus Jeletzkytes Riccardi, 1983
Jeletzkytes nodosus (Owen, 1852) United
States
Jeletzkytes nebrascensis (Owen, 1852) United
States
Jeletzkytes spedeni Landman and Waage, 1993 United
States
Genus Rhaeboceras Meek, 1876
Rhaeboceras halli (Meek and Hayden, 1856) United
States
Superfamily
Douvilleicerataceae Parona and Bonarelli, 1897
Family Douvilleiceratidae Parona and Bonarelli, 1897
Subfamily Cheloniceratinae Spath, 1923
Genus Procheloniceras Spath, 1923
Procheloniceras aff. albrechtiaustriae (Uhlig,
1883) Morocco
Subfamily Douvilleiceratinae Parona and Bonarelli, 1897
Genus Douvilleiceras de Grossouvre, 1894
Douvilleiceras mammillatum (Schlötheim, 1813) Madagascar
Douvilleiceras orbignyi Hyatt, 1903 Madagascar
Superfamily
Deshayesitaceae Stoyanow, 1949
Family Deshayesitidae Stoyanow, 1949
Subfamily Deshayesitinae Stoyanow, 1949
Genus Deshayesites Kazansky, 1914
Deshayesites volgensis Sazonova, 1958 Russia
Genus Dufrenoyia Kilian and Reboul, 1915
Dufrenoyia dufrenoyi (d'Orbigny, 1841) France
Dufrenoyia justinae (Hill, 1893) Mexico
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