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<mods:title id="9F464C15F09B93250BDD91C190BE6BD8">Stratigraphy, paleontology and age of the Fruitland and Kirtland Formations (upper Cretaceous), San Juan Basin, New Mexico</mods:title>
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<mods:namePart id="6738D03BAC8CDCEFA6C259869D4E0431">Lucas, S. G.</mods:namePart>
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<mods:namePart id="2677DA4CF009A7E3A87E3B94D3A3049F">Kues, B. S.</mods:namePart>
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<heading id="AA1A81CCD6238614F97BFE99F8BFFC6A" bold="true" box="[1687,1869,299,331]" centered="true" fontSize="11" level="5" pageId="10" pageNumber="225" reason="0">
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<emphasis id="C399EAB2D6238614F97BFE99F8BFFC6A" bold="true" box="[1687,1869,299,331]" pageId="10" pageNumber="225">Vertebrates</emphasis>
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<heading id="AA1A81CCD6238614FB39FED2FA50FCA1" bold="true" box="[1237,1442,352,384]" fontSize="10" level="3" pageId="10" pageNumber="225" reason="6">
<emphasis id="C399EAB2D6238614FB39FED2FA50FCA1" bold="true" box="[1237,1442,352,384]" italics="true" pageId="10" pageNumber="225">Introduction</emphasis>
</heading>
</paragraph>
<paragraph id="F15236A0D6238614FB10FE2AFA85F905" blockId="10.[1236,2312,299,1061]" pageId="10" pageNumber="225">
<emphasis id="C399EAB2D6238614FB10FE2AFAC7FC99" bold="true" box="[1276,1333,408,440]" pageId="10" pageNumber="225">The</emphasis>
vertebrate
<emphasis id="C399EAB2D6238614FA0BFE2AF9B5FC99" box="[1511,1607,408,440]" italics="true" pageId="10" pageNumber="225">faunas</emphasis>
of the Fruitland and Kirtland Formations rep ­
<emphasis id="C399EAB2D6238614FB39FE73FADDFCC0" box="[1237,1327,449,481]" italics="true" pageId="10" pageNumber="225">resent</emphasis>
the largest and most
<emphasis id="C399EAB2D6238614F99DFE73F92EFCC0" box="[1649,1756,449,481]" italics="true" pageId="10" pageNumber="225">diverse</emphasis>
Late
<emphasis id="C399EAB2D6238614F8DEFE73F7B2FCC0" box="[1842,2112,449,481]" italics="true" pageId="10" pageNumber="225">Cretaceous faunas</emphasis>
of the southern
<emphasis id="C399EAB2D6238614FAFAFE59FA62FF2A" box="[1302,1424,491,523]" italics="true" pageId="10" pageNumber="225">Western</emphasis>
Interior and have
<emphasis id="C399EAB2D6238614F950FE59F860FF2A" box="[1724,1938,491,523]" italics="true" pageId="10" pageNumber="225">a long history</emphasis>
of collection and study (
<bibRefCitation id="957C4B51D6238614FB0DFDA6FA18FF15" author="Hunt" box="[1249,1514,532,564]" etAl="et al." firstAuthor="Hunt" journalOrPublisher="New Mexico Geological Soceity, Guidebook" pageId="10" pageNumber="225" part="43" refId="ref18648" refString="Hunt, A. R, 1992, Sedimentology of a fossiliferous fluvial system, Fruitland and Kirtland Formations (Late Cretaceous), Fossil Forest area. San Juan County. New Mexico: New Mexico Geological Soceity, Guidebook 43." title="Sedimentology of a fossiliferous fluvial system, Fruitland and Kirtland Formations (Late Cretaceous), Fossil Forest area. San Juan County. New Mexico" type="journal volume" year="1992">
<emphasis id="C399EAB2D6238614FB0DFDA6FA8EFF15" bold="true" box="[1249,1404,532,564]" pageId="10" pageNumber="225">Hunt et al</emphasis>
., 1992
</bibRefCitation>
). Three vertebrate
<emphasis id="C399EAB2D6238614F8E8FDA6F896FF15" box="[1796,1892,532,564]" italics="true" pageId="10" pageNumber="225">faunas</emphasis>
can be discriminated
<emphasis id="C399EAB2D6238614F745FDA6F6F7FF15" box="[2217,2309,532,564]" italics="true" pageId="10" pageNumber="225">within</emphasis>
the Fruitland and Kirtland Formations; (1) Fruitland Formation (
<tableCitation id="BC6F031BD6238614F75FFD8EFB1BFFA4" captionStart="TABLE 5" captionStartId="11.[172,279,150,178]" captionText="TABLE 5. Vertebrate fauna of the Fruitland Formation, from Gilmore (1916, (1973), Clemens (1973), 1919, 1935), Osborn (1923), Wiman Kues et al. (1977. Armstrong-Ziegler (1931, 1932, 1933), Ostrom (1961), (1987), (1978), Lucas (1981), Hutchinson Powell Hall and Wolberg (1989), Lehman and Kues (1985), Lucas et al. (1987), and Carpenter (1990), Weishampel Flynn (1986), Bryant (1990). Lucas (1992), and this paper." pageId="10" pageNumber="225">
<emphasis id="C399EAB2D6238614F75FFD8EF6F7FF7D" box="[2227,2309,572,604]" italics="true" pageId="10" pageNumber="225">Table</emphasis>
5
</tableCitation>
); (2)
<emphasis id="C399EAB2D6238614FAD1FDD7FA57FFA4" box="[1341,1445,613,645]" italics="true" pageId="10" pageNumber="225">Hunter</emphasis>
<emphasis id="C399EAB2D6238614FA42FDD7FA0DFFA4" bold="true" box="[1454,1535,613,645]" pageId="10" pageNumber="225">Wash</emphasis>
Member, Farmington
<emphasis id="C399EAB2D6238614F8BEFDD7F83CFFA4" box="[1874,1998,613,645]" italics="true" pageId="10" pageNumber="225">Member</emphasis>
and De-na-zin
<emphasis id="C399EAB2D6238614F75DFDD7FAB3FF8E" italics="true" pageId="10" pageNumber="225">members of</emphasis>
the Kirtland Formation (
<tableCitation id="BC6F031BD6238614F953FD3DF8C6FF8E" box="[1727,1844,655,687]" captionStart="TABLE 6" captionStartId="12.[78,184,193,221]" captionText="TABLE 6. Vertebrate fauna of the Kirtland Formation (pre-Naashoibito Member). from Gilmore (1916. 1919, 1935), Wiman (1930, 1931, 1932, 1933), Powell (1973), Clemens (1973), Kues et al. (1977), Armstrong-Ziegler (1978), Lucas (1981), Mateer (1981), Lucas et al. (1987), Flynn (1986), Bryant (1987), Hall and Wolberg (1989), Lehman and Carpenter (1990), and this paper." pageId="10" pageNumber="225">Table 6</tableCitation>
); and (3) Naashoibito Member of
<emphasis id="C399EAB2D6238614FAEEFD05FADCFFF6" box="[1282,1326,695,727]" italics="true" pageId="10" pageNumber="225">the</emphasis>
Kirtland Formation (
<tableCitation id="BC6F031BD6238614F996FD05F902FFF6" box="[1658,1776,695,727]" captionStart="TABLE 7" captionStartId="12.[1223,1329,182,210]" captionText="TABLE 7. Vertebrate fauna of the Naashoibito Member of the Kirtland For­ mation from Brown (1910), Hay (1908, 1910), Gilmore (1916, 1919. 1922). Wiman (1931, 1933), Mateer (1976), Kues et al. (1977), Lehman (1981, 1984, 1985), Lucas et al. (1987) and this paper." pageId="10" pageNumber="225">Table 7</tableCitation>
). These
<emphasis id="C399EAB2D6238614F89BFD05F824FFF6" box="[1911,2006,695,727]" italics="true" pageId="10" pageNumber="225">faunas</emphasis>
form a
<emphasis id="C399EAB2D6238614F7B8FD05F729FFF6" box="[2132,2267,695,727]" italics="true" pageId="10" pageNumber="225">sequence</emphasis>
of
<emphasis id="C399EAB2D6238614FB38FD53FA85FE20" box="[1236,1399,737,769]" italics="true" pageId="10" pageNumber="225">decreasing</emphasis>
diversity.
<emphasis id="C399EAB2D6238614F9F1FD53F9ACFE20" box="[1565,1630,737,769]" italics="true" pageId="10" pageNumber="225">This</emphasis>
<emphasis id="C399EAB2D6238614F981FD53F971FE20" bold="true" box="[1645,1667,737,769]" pageId="10" pageNumber="225">is</emphasis>
<emphasis id="C399EAB2D6238614F97DFD53F959FE20" box="[1681,1707,737,769]" italics="true" pageId="10" pageNumber="225">in</emphasis>
part
<emphasis id="C399EAB2D6238614F911FD53F8C3FE20" box="[1789,1841,737,769]" italics="true" pageId="10" pageNumber="225">due</emphasis>
to the fact that
<emphasis id="C399EAB2D6238614F7CAFD53F7A0FE20" bold="true" box="[2086,2130,737,769]" pageId="10" pageNumber="225">the</emphasis>
majority
<emphasis id="C399EAB2D6238614F704FD53F6FAFE20" box="[2280,2312,737,769]" italics="true" pageId="10" pageNumber="225">of</emphasis>
microvertebrate sites are in the Fruitland Formation. Microvertebrate localities account for
<emphasis id="C399EAB2D6238614F9C3FC86F9A0FE75" bold="true" box="[1583,1618,820,852]" pageId="10" pageNumber="225">all</emphasis>
the mammalian and
<emphasis id="C399EAB2D6238614F848FC86F7CDFE75" bold="true" box="[1956,2111,820,852]" pageId="10" pageNumber="225">amphibian</emphasis>
fossils from these strata. It is unfortunate that some
<emphasis id="C399EAB2D6238614F8D8FCEFF87FFE5C" bold="true" box="[1844,1933,861,893]" pageId="10" pageNumber="225">recent</emphasis>
authors (e.
<emphasis id="C399EAB2D6238614F7D0FCEFF7A6FE5C" box="[2108,2132,861,893]" italics="true" pageId="10" pageNumber="225">g</emphasis>
.,
<bibRefCitation id="957C4B51D6238614F79DFCEFFA98FE86" author="Weishampel" editor="Weishampel. D. B .. &amp; Dodson, P. &amp; Osmolska. H." firstAuthor="Weishampel" journalOrPublisher="University of California Press" pageId="10" pageNumber="225" pagination="63 - 139" refId="ref21147" refString="Weishampel, D. B., 1990, Dinosaurian distribution; in Weishampel. D. B .. Dodson, P. and Osmolska. H., eds., The Dinosauria: Berkeley. University of California Press, p. 63 - 139." title="Dinosaurian distribution" type="book chapter" volumeTitle="The Dinosauria" year="1990">
<emphasis id="C399EAB2D6238614F79DFCEFFAF4FE86" bold="true" pageId="10" pageNumber="225">Weishampel</emphasis>
, 1990
</bibRefCitation>
) continue
<emphasis id="C399EAB2D6238614F9E2FC35F9D8FE86" box="[1550,1578,903,935]" italics="true" pageId="10" pageNumber="225">to</emphasis>
list
<emphasis id="C399EAB2D6238614F99CFC35F909FE86" bold="true" box="[1648,1787,903,935]" pageId="10" pageNumber="225">
the
<emphasis id="C399EAB2D6238614F945FC35F909FE86" box="[1705,1787,903,935]" italics="true" pageId="10" pageNumber="225">fauna</emphasis>
</emphasis>
of the Kirtland as a whole
<emphasis id="C399EAB2D6238614F771FC35FAF3FEF0" bold="true" pageId="10" pageNumber="225">
<emphasis id="C399EAB2D6238614F771FC35F6F7FE86" bold="true" box="[2205,2309,903,935]" italics="true" pageId="10" pageNumber="225">despite</emphasis>
the
</emphasis>
long
<emphasis id="C399EAB2D6238614FA8CFC03FA0FFEF0" box="[1376,1533,945,977]" italics="true" pageId="10" pageNumber="225">realization</emphasis>
that
<emphasis id="C399EAB2D6238614F9A3FC03F8D3FEF0" box="[1615,1825,945,977]" italics="true" pageId="10" pageNumber="225">
two faunas
<emphasis id="C399EAB2D6238614F8ECFC03F8D3FEF0" bold="true" box="[1792,1825,945,977]" italics="true" pageId="10" pageNumber="225">of</emphasis>
</emphasis>
demonstrably different ages are present in
<emphasis id="C399EAB2D6238614FA97FC6EFA5DFEDD" bold="true" box="[1403,1455,988,1020]" pageId="10" pageNumber="225">this</emphasis>
formation (e.
<emphasis id="C399EAB2D6238614F966FC6EF951FEDD" box="[1674,1699,988,1020]" italics="true" pageId="10" pageNumber="225">g</emphasis>
.,
<bibRefCitation id="957C4B51D6238614F92DFC6EF86DFEDD" author="Lehman" box="[1729,1951,988,1020]" editor="Lucas, S. G. &amp; Rigby, J. K. Jr. &amp; Kues, B. S." firstAuthor="Lehman" journalOrPublisher="University of New Mexico Press" pageId="10" pageNumber="225" pagination="189 - 221" refId="ref19138" refString="Lehman. T. M., 1981, The Alamo wash local fauna: a new look at the old Ojo Alamo fauna; n Lucas, S. G., Rigby, J. K. Jr. and Kues, B. S., eds .. Advances in San Juan Basin paleontology: Albuquerque. University of New Mexico Press, p. 189 - 221" title="The Alamo wash local fauna: a new look at the old Ojo Alamo fauna" type="book chapter" volumeTitle="Advances in San Juan Basin paleontology" year="1981">Lehman, 1981</bibRefCitation>
;
<bibRefCitation id="957C4B51D6238614F858FC6EF780FEDD" author="Lucas" box="[1972,2162,988,1020]" editor="Lucas, S. G. &amp; Rigby, J. K. Jr. &amp; Kues, B S." firstAuthor="Lucas" journalOrPublisher="University of New Mexico Press" pageId="10" pageNumber="225" pagination="337 - 393" refId="ref19582" refString="Lucas, S. G., 1981, Dinosaur communities of the San Juan Basin: a case for lateral variation in the composition of Late Cretaceous dinosaur communities; n Lucas, S. G., Rigby, J. K. Jr. and Kues, B S., eds., Advances in San Juan Basin paleontology: Albuquerque, University of New Mexico Press, p. 337 - 393" title="Dinosaur communities of the San Juan Basin: a case for lateral variation in the composition of Late Cretaceous dinosaur communities" type="book chapter" volumeTitle="Advances in San Juan Basin paleontology" year="1981">
Lucas,
<emphasis id="C399EAB2D6238614F7C6FC6EF780FEDD" bold="true" box="[2090,2162,988,1020]" pageId="10" pageNumber="225">1981</emphasis>
</bibRefCitation>
; Lucas
<emphasis id="C399EAB2D6238614F700FC6EFB07F905" italics="true" pageId="10" pageNumber="225">et al</emphasis>
.. 1987).
</paragraph>
<paragraph id="F15236A0D6238614FB38FBF9FA1FF94A" blockId="10.[1235,2308,1099,1351]" box="[1236,1517,1099,1131]" pageId="10" pageNumber="225">
<heading id="AA1A81CCD6238614FB38FBF9FA1FF94A" bold="true" box="[1236,1517,1099,1131]" fontSize="10" level="3" pageId="10" pageNumber="225" reason="6">
<emphasis id="C399EAB2D6238614FB38FBF9FA1FF94A" bold="true" box="[1236,1517,1099,1131]" pageId="10" pageNumber="225">Microvertebrates</emphasis>
</heading>
</paragraph>
<paragraph id="F15236A0D6238614FB17FB32F7D8F865" blockId="10.[1235,2308,1099,1351]" pageId="10" pageNumber="225">
Virtually all
<emphasis id="C399EAB2D6238614FA23FB32F9FAF981" box="[1487,1544,1152,1184]" italics="true" pageId="10" pageNumber="225">fish</emphasis>
, amphibian and reptiles, apart from
<emphasis id="C399EAB2D6238614F78DFB32F74EF981" box="[2145,2236,1152,1184]" italics="true" pageId="10" pageNumber="225">turtles</emphasis>
and dinosaurs, are represented
<emphasis id="C399EAB2D6238614F987FB1BF97CF9E8" box="[1643,1678,1193,1225]" italics="true" pageId="10" pageNumber="225">by</emphasis>
disarticulated microvertebrate specimens. The
<emphasis id="C399EAB2D6238614FAF7FB60FA43F9D3" box="[1307,1457,1234,1266]" italics="true" pageId="10" pageNumber="225">taxonomy</emphasis>
of these specimens
<emphasis id="C399EAB2D6238614F90BFB60F8F3F9D3" box="[1767,1793,1234,1266]" italics="true" pageId="10" pageNumber="225">is</emphasis>
,
<emphasis id="C399EAB2D6238614F8FAFB60F83CF9D3" box="[1814,1998,1234,1266]" italics="true" pageId="10" pageNumber="225">by necessity</emphasis>
,
<emphasis id="C399EAB2D6238614F80EFB60F7B5F9D3" box="[2018,2119,1234,1266]" italics="true" pageId="10" pageNumber="225">largely</emphasis>
typological, but they
<emphasis id="C399EAB2D6238614FA8DFB4EFA7CF83D" box="[1377,1422,1276,1308]" italics="true" pageId="10" pageNumber="225">are</emphasis>
comparable with contemporaneous faunas
<emphasis id="C399EAB2D6238614F7C6FB4EF7B6F83D" box="[2090,2116,1276,1308]" italics="true" pageId="10" pageNumber="225">in</emphasis>
the Western Interior (
<emphasis id="C399EAB2D6238614FA8EFA96FA8BF865" box="[1378,1401,1316,1348]" italics="true" pageId="10" pageNumber="225">e</emphasis>
.g.,
<bibRefCitation id="957C4B51D6238614FA5BFA96F99EF865" author="Estes" bookContentInfo="180 p." box="[1463,1644,1316,1348]" firstAuthor="Estes" journalOrPublisher="University of California Publications in the Geological Sciences" pageId="10" pageNumber="225" part="49" refId="ref17625" refString="Estes, R .. 1964, Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming: University of California Publications in the Geological Sciences, v. 49, 180 p." title="Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming" type="book" year="1964">Estes, 1964</bibRefCitation>
;
<bibRefCitation id="957C4B51D6238614F96CFA96F8C9F865" author="Sahni" box="[1664,1851,1316,1348]" firstAuthor="Sahni" journalOrPublisher="Bulletin of the American Museum of Natural History" pageId="10" pageNumber="225" pagination="323 - 412" part="147" refId="ref20845" refString="Sahni, A., 1972, The vertebrate fauna of the Judith River Formation. Montana: Bulletin of the American Museum of Natural History, v. 147, p. 323 - 412." title="The vertebrate fauna of the Judith River Formation. Montana" type="journal article" year="1972">
<emphasis id="C399EAB2D6238614F96CFA96F92AF865" bold="true" box="[1664,1752,1316,1348]" pageId="10" pageNumber="225">Sahni</emphasis>
, 1972
</bibRefCitation>
;
<bibRefCitation id="957C4B51D6238614F8BCFA96F7E9F865" author="Bryant" bookContentInfo="107 p." box="[1872,2075,1316,1348]" firstAuthor="Bryant" journalOrPublisher="University of California Publications in Geological Sciences" pageId="10" pageNumber="225" part="134" refId="ref16897" refString="Bryant, L. J., 1989, Non-dinosaurian vertebrates across the Cretaceous-Tertiary boundary in northeastern Montana: University of California Publications in Geological Sciences, v. 134. 107 p." title="Non-dinosaurian vertebrates across the Cretaceous-Tertiary boundary in northeastern Montana" type="book" year="1989">Bryant, 1989</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>