NEBRASKA
BROWN COUNTY
USNM LOCALITY BW-106
OGALLALA GROUP
VALENTINE FORMATION
CLARENDONIAN 2
UPPER MIOCENE EPOCH
LOWER NEOGENE PERIOD
LATE TERTAIRY SUBERA
UPPER CENOZOIC ERA
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990
COHORT: CROCODYLOTARSI BENTON & CLARK, 1988
MAGNORDER: SUCHIA KREBS, 1974
SUPERORDER: CROCODYLOMORPHA WALKER, 1968
GRANDORDER: CROCODILIFORMES HAY, 1930
MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983
ORDER: EUSUCHIA emend HUXLEY, 1875
INFRAORDER: CROCODYLIA emend GMELIN, 1877
Incerate sedis
Gen. sp. indet.
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NEBRASKA
BROWN COUNTY
USNM LOCALITY BW-123
OGALLALA GROUP
VALENTINE FORMATION
CLARENDONIAN 2
UPPER MIOCENE EPOCH
LOWER NEOGENE PERIOD
LATE TERTAIRY SUBERA
UPPER CENOZOIC ERA
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990
COHORT: CROCODYLOTARSI BENTON & CLARK, 1988
MAGNORDER: SUCHIA KREBS, 1974
SUPERORDER: CROCODYLOMORPHA WALKER, 1968
GRANDORDER: CROCODILIFORMES HAY, 1930
MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983
ORDER: EUSUCHIA emend HUXLEY, 1875
INFRAORDER: CROCODYLIA emend GMELIN, 1877
Incerate sedis
Gen. sp. indet.
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NEBRASKA
BROWN COUNTY
LONG LAKE
LARAMINE FORMATION
LANCIAN AGE
MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: CHELONOMORPHA KUHN, 1960
SUPERCOHORT: TESTUDINES LINNAEUS, 1758
COHORT: CASICHELYDIA emend GAFFNEY & MEYLAN, 1988
MAGANORDER: CRYPTODIRA GAFFNEY & MEYLAN, 1988
SUPERORDER: SELMACRYPTODIRA GAFFNEY, HUTCHISON, JENKINS & MEEKR, 1987
GRANDORDER: DAIOCRYPTODIRA GAFFNEY & MEYLAN, 1988
MICRORDER: CENTROCRYPTODIRA GAFFNEY & MEYLAN, 1988
ORDER: POLYCRPTODIRA GAFFNEY & MEYLAN, 1988
SUBORDER: PROCOELOCRYPTODIRA GAFFNEY & MEYLAN, 1988
INFRAORDER: CHELOMACRYPTODIRA GAFFNEY & MEYLAN, 1988
PARVORDER: TRIONYCHIDA GRAY, 1870
Superfamily: TRIONYCHIDEA Bell, 1828 (sensu Gray, 1870)
Family: TRIONYCHIDAE Bell, 1828
Aspideretoides foveatus
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