Age Stage   Ammonite Zones (International Stratigraphy Standards) Mediterranean / Tethyan Western Interior, North America 65 mya to 99 mya / N.W. Europe @ Albian 100 mya Russian Platform/Volga Basin Quenstedt's Jurassic arrangement
Tertiary
Cretaceous (65.5)
Maastrichtian (65.5)
65     Anapachydiscus terminus (Courtesy of Bavarian State Collection for Paleontology and Geology, Germany) No usable ammonites  
66     Anapachydiscus (Menuites) fresvillensis (Courtesy of Herve Chatelier, France) Jeletzkytes nebrascensis (Courtesy of Worldwide Museum of Natural History)  
67   U   Hoploscaphites nicolletii  
68       Hoploscaphites birkelundi (Courtesy of Santa Monica Museum Natural History)  
69 69.2   P. (Pachydiscus) neubergicus (Courtesy of American Museum of Natural History, New York) Baculites clinolobatus (Courtesy of USGS)  
    L   Baculites grandis (Courtesy of USGS)  
        Baculites baculus (Courtesy of USGS)  
Campanian (70.6)
70     N. (Nostoceras) hyatti (Courtesy of Peabody Museum of Natural History) Baculites ellasi (Courtesy of USGS)  
71       Baculites jenseni  
72       Baculites reesidei (Courtesy of USGS)  
        Baculites cuneatus (Courtesy of USGS)  
73   U Nostoceras (Didymoceras) cheyennensis Baculites compressus  
        Nostoceras (Didymoceras) cheyennensis  
74       Exiteloceras jenneyi (Courtesy of Deleware Museum Natural History)  
75     N. (Bostrychoceras) polyplocum (Courtesy of Christian Schneider, Germany) Nostoceras (Didymoceras) stevensoni (Courtesy of Worldwide Museum of Natural History)  
76 76.4     Nostoceras (Didymoceras) nebrascense (Courtesy of Worldwide Museum of Natural History)  
77       Baculites scotti  
78   M   Baculites perplexus (late)  
79       Baculites gilberti, B. perplexus (early), Bacul. sp. smooth, B. asperiformis, B. maclearni, B. obtusus  
80 80.6   H. marroti / Hoplitoplacenticeras vari (Courtesy of Thomas Stuwe, Germany)    
81   L Menabites (Delawarella) delawarensis Baculites sp. (Weak flank ribs)  
82     Placenticeras bidorsatum Scaphites hippocrepis III, II, I  
        Scaphites leei III  
Santonian (83.5)
83     Placenticeras polyopsis (Courtesy of Herve Chatelier, France) Desmoscaphites bassleri  
    U Placenticeras polyopsis subzone Placenticeras paraplanum Desmoscaphites erdmanni  
84 84.2 M   Clioscaphites choteauensis (Courtesy of Mike Everhart, www.oceansofkansas.com)  
85 85.1 L P. polyopsis subzone Texanites gallicus (Courtesy of Bill Jolley, Texas) Clioscaphites vermiformis  
        Clioscaphites saxitonianus  
Coniacian (85.8)
86   U Paratexanites serratomarginatus (Courtesy of Jerome Plicot, France) Scaphites depressus (Courtesy of Kevin Bylund, ammonoid.com)  
87          
88     Gauthiericeras margae (Courtesy of Herve Chatelier, France) Scaphites ventricosus  
    L Peroniceras tridorsatum (Courtesy of Jerome Plicot, France) Forresteria alluaudi / Scaphites preventricosus (Courtesy of Kevin Bylund, ammonoid.com)  
Turonian (88.6)
89     Forresteria (Harleites) petrocoriensis (Courtesy of Jerome Plicot, France) Forresteria peruana  
      Subprionocyclus neptuni (Courtesy of Natural History Museum Los Angelas County) Prionocyclus germari (Courtesy of Cyril Baudouin, France)  
        Scaphites nigricollensis  
        Scaphites whitfieldi (Courtesy of Kevin Bylund, ammonoid.com)  
        Scaphites ferronensis  
        Scaphites warreni (Courtesy Of Jerome Plicot, France  
90 90.2 U   Prionocyclus macombi (Courtesy of Kevin Bylund, ammonoid.com)  
91     Collignoniceras woollgari Prionocyclus hyatti (Courtesy of Kevin Bylund, Utah)  
      C. woollgari subzone Romaniceras (Romaniceras) deverianum (Courtesy of Jerome Plicot, France)    
    M C. woollgari subzone Romaniceras (Yubariceras) ornatissimum (ask Museo de Paleontologia de Cd. Delicias, Chihuahua Mexico Prionocyclus percarinatus  
      C. woollgari subzone Romaniceras kallesi (Courtesy of Herve Chatelier, France)    
      C. woollgari subzone Kamerunoceras turoniense (Courtesy of Herve Chatelier, France) Collignoniceras woollgari  
92 92.1   Mamites nodosoides Mamites nodosoides  
    L Watinoceras coloradoense / Watinoceras devonense (Courtesy of Association Geologique Auboise, France) Vascoceras (Greenhornoceras) birchbyi (Courtesy of University of Kansas Natural History Museum, Division of Invertebrate Paleontology)  
        Pseudaspidoceras flexuosum  
93       Watinoceras devonense  
Cenomanian (93.5)
      Nigericeras scotti (Courtesy of Acta Geologica Polonica) Nigericeras scotti (Courtesy of Acta Geologica Polonica)  
        Neocardioceras juddii (Courtesy of Acta Geologica Polonica) Neocardioceras juddii (Courtesy of Acta Geologica Polonica)
      Burroceras clydense Burroceras clydense  
      Euomphaloceras septemseriatum / Sciponoceras gracile Metoicoceras geslinianum  
    U   Sciponoceras gracile / Vascoceras diartanum  
94     Dunveganoceras conditum, Dunveganoceras albertense, Dunveganoceras problematicum Calyoceras (Proeucalyoceras) guerangeri  
95 95   Dunveganoceras pondi / Calycoceras (Proeucalycoceras) canitaurinum (Courtesy of The Palaeontological Association and J-P Cavigelli, Montana) Acanthoceras jukesbrownei (Courtesy of Herve Chatelier, France)  
    M Plesiacanthoceras wyomingense (Courtesy of Ryan Somma, ideonexus.com) Acanthoceras rhotomagense  
96     Acanthoceras amphibolum, A. bellense, A. muldoonense, A. granesorense Cunningtoniceras inerme (Courtesy of Herve Chatelier, France)  
  96.3   Conlioceras tarrantense / Calycoceras (Conlinoceras) gilberti (Courtesy of Walter Stein, www.paleoadventures.com) Mantelliceras dixoni (Courtesy of Barry Marsh for SOES Fossils, U.K.)  
97     Neogastroplites maclearni    
98   L Neogastroplites americanus Mantelliceras mantlli  
      Neogastroplites muelleri    
      Neogastroplites cornutus    
99     Neogastroplites haasi    
Albian (99.6)
        NW European / Boreal Ammonite Zones  
100     Stoliczkaia (Stoliczkaia) dispar Stoliczkaia (Stoliczkaia) dispar  
101   U Stoliczkaia (Stoliczkaia) dispar subzone Mortoniceras Stoliczkaia (Faraudiella) blancheti  
102          
103   U      
104 (Vraconien)   Mortoniceras inflatum Mortoniceras inflatum  
105     Mortoniceras inflatum subzone Diploceras cristatum (Courtesy of Steven Friedrich, UK) Mortoniceras inflatum subzone Diploceras cristatum (Courtesy of Steven Friedrich, UK)  
106 106.5   Euhoplites lautus (Courtesy of Steven Friedrich, UK) Euhoplites lautus (Courtesy of Steven Friedrich, UK)  
107     Euhoplites loricatus (Courtesy of David Jolly, France) Euhoplites loricatus (Courtesy of David Jolly, France)  
108   M Hoplites dentatus Hoplites dentatus  
      Hoplites dentatus subzone Hoplites spathi (Courtesy of Robert Rendall, Tomno.com) Hoplites dentatus subzone Hoplites spathi (Courtesy of Robert Rendall, Tomno.com)  
      Hoplites dentatus subzone Lyelliceras lyelli Hoplites dentatus subzone Lyelliceras lyelli  
109 108.9   Douvilleiceras mammillatum Douvilleiceras mammillatum  
110     Douvilleiceras mammillatum (7 subzones) Douvilleiceras mammillatum (7 subzones)  
111     Leymeriella (Leymeriella) tardefurcata (Courtesy of Cyril Baudouin, France) Leymeriella (Leymeriella) tardefurcata (Courtesy of Cyril Baudouin, France)  
    L Leymeriella (Leymeriella) tardefurcata subzone Leymeriella regularis Leymeriella (Leymeriella) tardefurcata subzone Leymeriella regularis  
      Leymeriella (Leymeriella) tardefurcata subzone Leymeriella acuticostata Leymeriella (Leymeriella) tardefurcata subzone Leymeriella acuticostata  
      Leymeriella (Leymeriella) tardefurcata subzone Leymeriella (Proleymeriella) schrammeni Leymeriella (Leymeriella) tardefurcata subzone Leymeriella (Proleymeriella) schrammeni  
Aptian (112)
112     Hypacanthoplites jacobi (Courtesy of Renate W. (steinchen) of mineralienatlas.de Hypacanthoplites jacobi (Courtesy of Renate W. (steinchen) of mineralienatlas.de  
113     Hypacanthoplites (Nolaniceras) nolani Hypacanthoplites jacobi subzone Hypacanthoplites anglicus (Courtesy ofCyril Baudouin, France)  
      Hypacanthoplites nolani subzone Hypacanthoplites rubricosus Hypacanthoplites jacobi subzone Hypacanthoplites rubricosus  
114 (Clansayesian) U Hypacanthoplites (Nolaniceras) nolani subzone Diadochoceras nodosocostatum Hypacanthoplites jacobi subzone Hypacanthoplites (Nolaniceras) nolani  
115 115   Parahoplites melchioris Parahoplites nutfieldiensis  
116       Cheloniceras (Epicheloniceras) martini (Courtesy of Antoine Pictet, France)  
117     Cheloniceras (Epicheloniceras) subnodosocostam Cheloniceras (Epicheloniceras) martini subzone Epicheloniceras buxtorfi (Courtesy of Pierre Ropolo, France)  
118 (Gargasien) M   Cheloniceras (Epicheloniceras) martini subzone Epicheloniceras gracile (Courtesy of Pierre Ropolo, France)  
119       Cheloniceras (Epicheloniceras) martini subzone Epicheloniceras debile (Courtesy of Pierre Ropolo, France)  
120          
121 121   Dufrenoya furcata Tropaeum bowerbanki  
122     Deshayesites deshayesi Deshayesites deshayesi  
123 (Bedoulien) L Deshayesites (Paradeshayesites) weissi (Courtesy of Pierre Ropolo, France) Deshayesites forbesi (Courtesy of Rod Abbey, UK)  
124     Deshayesites (Paradeshayesites) oglanlensis (Courtesy of Pierre Ropolo, France) Prodeshayesites gr. fissicostatus  
Barremian (125)
125     Martelites sarasini subzone Pseudocrioceras waagenoides (Courtesy of Pierre Ropolo, France) Parancyloceras bidentatum (Courtesy of Peter Rawson, Yorkshire Geological Society)  
      Martelites sarasini (Courtesy of Herve Chatelier, France) Simancyloceras stolleyi  
126     Imerites giraudi (Courtesy of Herve Chatelier, France) Ancyloceras innexum / Crioceras pingue  
127   U Hemihoplites feraudianus (Courtesy of Herve Chatelier, France)    
      Gerhardtia sartousiana (Courtesy of Didier Bert, France) Paracrioceras denckmanni  
      Toxancyloceras vandenheckii (Courtesy of Luc Ebbo, Centre d'Etudes Mediterraneennes)    
      Holcodiscus uhligi Paracrioceras elegans (Courtesy of Wakayama Prefectural Museum of Nature)  
128 128.4   Coronites darsi (Courtesy of Herve Chatelier, France)    
      Kotetishvilia compressissima (Courtesy of Herve Chatelier, France) Hoplocrioceras fissicostatum  
129     Nicklesia pulchella Hoplocrioceras rarocinctum  
    L Kotetishvilia nicklesi (Courtesy of Didier Bert, France)   Volga Basin and Russian Platform Ammonite Zones
      Taveraidiscus hugii    
Hauterivian (130)
130     Pseudothurmannia ohmi (Courtesy of Herve Chatelier, France) Simbirskites variabilis Simbirskites decheni (Courtesy of Oliver Schneider, Germany)
131       Simbirskites marginatus  
132 (Cruasien) U Balearites balearis (Courtesy of Herve Chatelier, France) Simbirskites gottschei  
      Pleisiospitidiscus ligatus (Courtesy of Herve Chatelier, France) Speetoniceras (Milanowskia) speetonensis  
133 133.9   Subsaynella sayni (Courtesy of Cyril Baudouin, France) Speetoniceras inversum Speetoniceras versicolor
134     Lyticoceras nodosoplicatum (Courtesy of Cyril Baudouin, France) Endemoceras regale (Courtesy of Mike Horne, Friends of the Speeton Clay)  
135   L Crioceratites loryi Endemoceras (Lyticoceras) noricum  
      Crioceratites loryi subzone Olcostephanus (Jeannoticeras) jeannoti    
      Acanthodiscus radiatus (Courtesy of Herve Chatelier, France) Endemoceras amblygonium  
Valanginian (136.4)
136     Criosarasinella furcillata (Courtesy Alexander Lukeneder, Natural History Museum, Department of Geology and Paleontology, Vienna, Austria) Olcostefanus sp.  
137     Neocomites peregrinus Stoicoceras (formerly Dicostella) tuberculatum  
        Prodichotomites ivanovi Polyptchites keyserlingi (Courtesy of PMAG Artic expedition 2000)
138   U Saynoceras verrucosum (Courtesy of Herve Chatelier, France) 10 zones  
139 139   Busnardoites campylotoxus Platylenticeras (Platylenticeras) heteropleurum (Courtesy of Herve Chatelier, France) Nikitinoceras hoplitoides
    L Tirnovella (Subthurmannia) pertransiens (Courtesy of Herve Chatelier, France) Platylenticeras (Platylenticeras) robustum (Courtesy of Arbeitskreis Palaontologie Hannover) Delphinites (Pseudogarnieria) undulatoplicatilis
Berriasian (140.2)
140     Subthurmannia boissieri Peregrinoceras albidum (Courtesy of Geological Society of Denmark) Surites (Bojarkia) mesezhnikowi (Courtesy of The Palaeontological Association)
      Subth. boissieri subzone Thurmanniceras otopeta    
141     Subth. Boissieri subzone Tirnovella alpillensis Surites stenomphalus  
      Subth. Boissieri subzone Berriasella picteti   Hectoroceras kochi
    U Subth. Boissieri subzone Malbosiceras paramimounum Surites icenii  
      (Tirnovella (Subthurmannia) occitanica   Chetaites sibiricus / Praetollia maynci
142 142.4   Tirnovella occitanica subzone Dalmasiceras dalmasi No Ammonites Surites analogus
143     Tirnovella occitanica subzone Berriasella privasensis    
144     Tirnovella occitanica subzone Subthurmannia subalpina Hectoroceras kochi Hectoroceras kochi
    L Berriasella jacobi subzone Berriasella grandis (Courtesy of Maurice Gidon, GEOL-ALP) Praetollia (Runctonia) runctoni Craspedites nodiger
      Berriasella jacobi   Craspedites subditus
Jurassic (145.5)
Tithonian (145.5)
145     Durangites (vulgaris?) Subcraspedites primitivus Kaspurites fulgens
146     Micracanthoceras microcanthum Paracraspedites opressus Titanites (Paracraspedites) oppressus
        Titanites anguiformis Epivirgatites nikitini (Courtesy of Alexander Bryatov, Russia)
    U   Galbanites (Kerberites) kerberus  
147 147.2   Micracanthoceras ponti / Burckhardticeras ponti Galbanites okusensis Virgatites virgatus
148   L Simoceras admirandum / S. biruncinatum (Courtesy of la Valle del Metauro, Italy) Glaucolithites glaucolithus Malm Zeta 6
        Zaraískites (Progalbanites) albani  
        Virgatopavlovia fittoni (Courtesy of The Paleontological Assocation) Dorsoplanites panderi (Courtesy of Alexander Bryatov, Russia )
      Richterella richteri (Courtesy of Bayerischen Staatssammlung fur Palaontologie und Geologie, Germany) Pavlovia rotunda (Courtesy of Natural History Museum, London)  
        Pavlovia pallasioides (Courtesy of Natural History Museum Picture Library, London)  
149     Semiformiceras semiforme (Courtesy of la Valle del Metauro, Italy) Pectinatites (Pectinatites) pectinatus Ilowaiskya pseudoscythica
      Semiformiceras darwini Pectinatites (Arkellites) hudlestoni Ilowaiskya sokolovi
        Pectinatites wheatleyensis (Courtesy of Natural History Museum Picture Library, London)  
      Hybonoticeras hybonotum (Courtesy of la Valle del Metauro, Italy) Pectinatites scitulus Ilowaiskya klimovi
        Pectinatites elegans Malm Zeta 1 - 3
        Aulacostephanus autissiodorensis (Courtesy of Herve Chatelier, France)  
Kimmeridgian (150.8)
150     Hybonoticeras beckeri Aulacostephanus autissiodorensis (Courtesy of Herve Chatelier, France) Malm Epsilon
151     Aulocostephanus eudoxus (Courtesy of Rosemarie Filippi, Jurassic Ammonites) Aulocostephanus eudoxus (Courtesy of Rosemarie Filippi, Jurassic Ammonites) Malm Delta 3 & 4
152     Aspidoceras acanthicum (Courtesy of Antoine Pictet, France) Aulacostephanus mutabilis (Courtesy of Natural History Museum Picture Library, London) Malm Delta 1 & 2
153     Crussoliceras divisum (Courtesy of Cyril Baudouin, France)   Malm Gamma 3
      Ataxioceras hypselocyclum   Malm Gamma 2
154     Sutneria playnota Rasenia cymodoce (Courtesy of Philippe Cooreman, Belgium) Malm Gamma 1
155     Aulacostephanus autissiodorensis (Courtesy of Herve Chatelier, France)    
Oxfordian (155.7)
        Pictonia baylei (Courtesy of Natural History Museum, London)  
156   U Epipeltoceras bimammatum (Courtesy of Jerome Plicot, France) Ringsteadia pseudocordata (Courtesy of Tim Ross) Malm Alpha 3
157 157.4   Perisphinctes (Dichotomoceras) bifurcatus Perisphinctes cautisnigrae (Courtesy of Ewa Glowniak, Poland)  
158   M Gregoryceras transversarium Perisphinctes pumilus Malm Alpha 2
159 159.6   Perisphinctes (Liosphinctes) plicatilis (Courtesy of Herve Chatelier, France) Perisphinctes (Liosphinctes) plicatilis (Courtesy of Herve Chatelier, France)  
160   L Cardioceras cordatum Cardioceras cordatum Malm Alpha 1
      Quenstedtoceras mariae Quenstedtoceras mariae  
Callovian (161.2)
161   U Quenstedtoceras lamberti Quenstedtoceras lamberti Dogger Zeta 3
      Peltoceras athleta Peltoceras athleta  
162 162.6   Erymnoceras coronatum Erymnoceras coronatum Dogger Zeta 2
    M Reineckeia anceps Kosmoceras jason  
163 163.2   Macrocephalites (Dolikephalites) gracillis (Courtesy of Herve Chatelier, France) Kosmoceras (Sigaloceras) calloviense Dogger Zeta 1
    L   Proplanulites koenigi  
164     Bullatimorphites (Kheraiceras) bullatus Macrocephalites herveyi (Courtesy of John Frederick Blake)  
Bathonian (164.7)
165     Clydoniceras (Clydoniceras) discus (Courtesy of Eric Poirot, echinologia.com) Clydoniceras (Clydoniceras) discus (Courtesy of Eric Poirot, echinologia.com) Dogger Epsilon 3
    U Hecticoceras (Prohecticoceras) retrocostatum Oxycerites orbis (Courtesy of Herve Chatelier, France)  
      Cadomites (Cadomites) bremeri Procerites hodsoni (Courtesy of William J. Arkell)  
166 166.1   Morrisceras morrisi / Tulites subcontractus (Courtesy of Eric Poirot, echinologia.com) Morrisceras morrisi / Tulites subcontractus (Courtesy of Eric Poirot, echinologia.com) Dogger Epsilon 2
      Procerites progracilis (Courtesy of Eric Poirot, echinologia.com) Procerites progracilis (Courtesy of Eric Poirot, echinologia.com)  
    L Procerites (Siemiradzkia) aurigerus (Courtesy of Herve Chatelier, France) Asphinctites tenuiplicatus (Courtesy of Rosemarie Filippi, Jurassic Ammonites)  
167     Zigzagiceras zigzag (Courtesy of Eric Poirot, echinologia.com) Zigzagiceras zigzag (Courtesy of Eric Poirot, echinologia.com) Dogger Epsilon 1
Bajocian (167.7)
168     Parkinsonia parkinsoni Parkinsonia parkinsoni  
    U Garantiana garantani Garantiana garantani Dogger Delta 2
      Strenoceras niortense Strenoceras niortense  
169 169.7   Stephanoceras humphriesianum Stephanoceras humphriesianum Dogger Delta 1
170     Sonninia propinquans (=zone Emileia (Otoites) sauzei) Sonninia propinquans (=zone Emileia (Otoites) sauzei) Dogger Gamma 3
      Witchellia laeviuscula (Courtesy of Jerome Plicot, France) Witchellia laeviuscula (Courtesy of Jerome Plicot, France) Dogger Gamma 2
171   L Hyperlioceras discites (Courtesy of Francoise Gigot and Jacques Aubry, France) Hyperlioceras discites (Courtesy of Francoise Gigot and Jacques Aubry, France) Dogger Gamma 1
Aalenian (171.7)
    U Graphoceras (Graphoceras) concavum Graphoceras (Graphoceras) concavum Dogger Beta 2
172 172.4   Ludwigia murchisonae subzone Ludwigia (Brasilia) bradfordensis Ludwigia murchisonae subzone Ludwigia (Brasilia) bradfordensis  
173   M Ludwigia murchisonae subzone Ludwigia murchisonae Ludwigia murchisonae subzone Ludwigia murchisonae Dogger Beta 1
174 174.8 L Leioceras opalinum Leioceras opalinum Dogger Alpha
Toarcian (175.6)
175     Pleydellia aalensis Pleydellia aalensis Lias Zeta 3
176     Dumortieria pseudoradiosa Dumortieria pseudoradiosa  
177     Phylseogrammoceras dispansum = Hammatoceras insigne Phylseogrammoceras dispansum = Hammatoceras insigne  
178   U Grammoceras thouarsense Grammoceras thouarsense Lias Zeta 2
179          
180 180.7   Haugia variabilis Haugia variabilis Lias Zeta 1
181     Hildoceras bifrons Hildoceras bifrons Lias Epsilon 3
    L Harpoceras serpentinum Harpoceras serpentinum Lias Epsilon 2
182     Dactylioceras (Orthodactylioceras) tenuicostatum Dactylioceras (Orthodactylioceras) tenuicostatum Lias Epsilon 1
Pliensbachian (183)
183     Amaltheus (Pleuroceras) spinatum Amaltheus (Pleuroceras) spinatum Lias Delta 2
184 (Domerian)   Amaltheus margaritatus Amaltheus margaritatus Lias Delta 1
185   U      
186          
187 187   Prodactylioceras davoei Prodactylioceras davoei Lias Gamma 3
188 (Carixian)   Tragophylloceras ibex Tragophylloceras ibex Lias Gamma 2
189   L Polymorphites bronni (formerly Uptonia jamesoni) Polymorphites bronni (formerly Uptonia jamesoni) Lias Gamma 1
Sinemurian (189.6)
190 (Lotharingian)   Echioceras raricostatum (Courtesy of Chris Pamplin, Fossilwalks.com) Echioceras raricostatum (Courtesy of Chris Pamplin, Fossilwalks.com) Lias Beta 3
191   U Oxynoticeras oxynotum Oxynoticeras oxynotum Lias Beta 2
192     Asteroceras obtusum Asteroceras obtusum Lias Beta 1
193 193.3   Caenisites turneri (Courtesy of Harold Tabiner, UK) Caenisites turneri (Courtesy of Harold Tabiner, UK)  
194   L Arnioceras semicostatum Arnioceras semicostatum Lias Alpha 3
195     Coroniceras (Arietites) bucklandi Coroniceras (Arietites) bucklandi  
Hettangian (196.5)
196     Schlotheimia angulata Schlotheimia angulata  
197     Alsatites liasicus (Courtesy of Chris Pamplin, Fossilswalks.com) Alsatites liasicus (Courtesy of Chris Pamplin, Fossilswalks.com) Lias Alpha 2
198     Psiloceras planorbis Psiloceras planorbis Lias Alpha 1
©2004 NARG - North America Research Group