ARTIC EUROPEAN RUSSIA
WILCZEK LAND
CAPE HANSA
MIDDLE PART OF THE HOFER FORMATION
KIMMERIDGIAN STAGE-
VOLGA SUBSTAGE
TITHONIAN STAGE
LATE JURASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1903
INFRACLASS: NEODIAPSIDA BENTON, 1985
NEODIAPSIDA: INCERTAE SEDIS
OR AMNIOTA: INCERTAE SEDIS
MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
MICRORDER: LONGIPINNATI HUENE, 1948
ORDER: MERRIAMOSAURIA MONTANI, 1999
SUBORDER: EUICHTHYOSAURIA MONTANI, 1999
INFRAORDER: PARVIPELVIA MONTANI, 1999
PARVORDER: NEOICHTHYOSAURIA SANDER, 2000
SUPERFAMILY: OPHTHALMOSAURIDEA SEELEY, 1874
Family: OPHTHALMOSAURIDAE Seeley, 1874
Arthropterygius sp = Ophthalmosauridae gen. indet cf. Archropterygius sp
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EUROPEAN RUSSIA
SAMARA REGION
SYZRAN DISTRICT
BEREZOVIY DOL RAVINE NEAR NOVAYA RACHEIKA VILLAGE
PROMZA FORMATION
DORSOPLANITES PANDERI AMMONITE BIOZONE
EARLY MIDDLE VOLGIAN SUBSTAGE
TITHONIAN STAGE
LATE JURASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1903
INFRACLASS: NEODIAPSIDA BENTON, 1985
NEODIAPSIDA: INCERTAE SEDIS
OR AMNIOTA: INCERTAE SEDIS
MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
MICRORDER: LONGIPINNATI HUENE, 1948
ORDER: MERRIAMOSAURIA MONTANI, 1999
SUBORDER: EUICHTHYOSAURIA MONTANI, 1999
INFRAORDER: PARVIPELVIA MONTANI, 1999
PARVORDER: NEOICHTHYOSAURIA SANDER, 2000
SUPERFAMILY: OPHTHALMOSAURIDEA SEELEY, 1874
Family: OPHTHALMOSAURIDAE Seeley, 1874
*Arthropterygius volgensis = Ichthyosaurus volgensis
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EUROPEAN RUSSIA
7 KM ABOVE THE MOUTH WITHIN THE VOLONGA DETACHED MASS
VOLONGA RIVER
POLAR DISTRICT OF NENETS AUTONOMOUS REGION (OKRUG)
MIDDLE VOLGIAN
TITHONIAN STAGE
UPPERMOST MALM EPOCH
LATE JURASSIC-BERRIASIAN STAGE
LOWER NEOCOMIAN SUBEPOCH
LOWER EARLY CRETACEOUS EPOCH
EARLY CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
INFRACLASS: NEODIAPSIDA BENTON, 1985
NEODIAPSIDA: INCERTAE SEDIS
OR AMNIOTA: INCERTAE SEDIS
MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova
SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999
GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835
MICRORDER: LONGIPINNATI HUENE, 1948
ORDER: MERRIAMOSAURIA MONTANI, 1999
SUBORDER: EUICHTHYOSAURIA MONTANI, 1999
INFRAORDER: PARVIPELVIA MONTANI, 1999
PARVORDER: NEOICHTHYOSAURIA SANDER, 2000
SUPERFAMILY: OPHTHALMOSAURIDEA SEELEY, 1874
Family: OPTHALMOSAURIDAE Seeley, 1874
Incertae sedis
Ophthalmosaurus sp
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