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Baculites clinolobatus

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Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE243-p1
... marine zonation. First approximations of correspondence between ammonite zones and North American Land-Mammal “Ages” (NALMAs) include: Lancian ( Sphenodiscus through “Triceratops” zones); “Edmontonian” (a name not yet faunally defined; Didymoceras cheyennense through Baculites clinolobatus zones...
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—Approximate positions of depositional environments based on outcrop and subsurface data during (A) early deposition of the Baculites grandis biozone and (B) early deposition of the Baculites clinolobatus biozone. The width of the shelf increased significantly, and the basin was displaced to the south during the approximately 0.5 m.y. between the time shown in 15A and the time shown in 15B.
Published: 01 November 1990
Figure 15 —Approximate positions of depositional environments based on outcrop and subsurface data during (A) early deposition of the Baculites grandis biozone and (B) early deposition of the Baculites clinolobatus biozone. The width of the shelf increased significantly, and the basin
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Maps show sample localities in the USA. Solid black lines represent reconstructed shorelines from Cobban et al. (1994) for the Campanian Baculites compressus and Maastrichtian Baculites clinolobatus zones. White areas represent marine conditions. Gray shaded areas represent land. (A) Campanian sample locations (yellow stars) from the offshore Pierre Shale formation in South Dakota. (B) Maastrichtian sample locations (yellow stars) from the nearshore Fox Hills formation and the offshore Pierre Shale formation.
Published: 12 July 2024
Figure 1. Maps show sample localities in the USA. Solid black lines represent reconstructed shorelines from Cobban et al. (1994) for the Campanian Baculites compressus and Maastrichtian Baculites clinolobatus zones. White areas represent marine conditions. Gray shaded areas represent land
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—Schematic fence diagram showing lithologic variation of the Lewis Shale and distribution of facies within the study region. Locations of lines are shown on Figure 3. The heavy dashed line indicates the approximate time of transition from Baculites grandis to Baculites clinolobatus biozones and shows that the formation becomes younger toward the south. Solid lines indicate known contacts; dashed lines indicate inferred contacts; dotted lines are known contacts located behind “fence.”
Published: 01 November 1990
Figure 5 —Schematic fence diagram showing lithologic variation of the Lewis Shale and distribution of facies within the study region. Locations of lines are shown on Figure 3 . The heavy dashed line indicates the approximate time of transition from Baculites grandis to Baculites clinolobatus
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FIGURE 10—Reconstructed paleoshoreline positions for the Maastrichtian zones of (1) Baculites clinolobatus, (2) Jeletzkytes (=Discoscaphites) nebrascensis., and (3) latest Maastrichtian “Triceratops”— Danian. Dots represent fossil sites sampled by previous studies (modified from Lillegraven and Ostresh, 1990). Shaded area is water; light gray is shallower water and dark gray is deeper water
Published: 01 June 2004
FIGURE 10 —Reconstructed paleoshoreline positions for the Maastrichtian zones of (1) Baculites clinolobatus , (2) Jeletzkytes (= Discoscaphites ) nebrascensis ., and (3) latest Maastrichtian “ Triceratops ”— Danian. Dots represent fossil sites sampled by previous studies (modified from
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Shoreline paleogeography for each interval of Tepee Butte seep activity shown in figure 3 and the relationship to known Tepee Butte outcrops for that time interval. Note that transgression and regression is not synchronous over the length of the shoreline (best observed in C, D). A, Shoreline positions for the Baculites perplexus through Baculites gregoryensis biozones. B, Shoreline positions for the Baculites scotti though Didymoceras cheyennense biozones. C, Shoreline positions for the Baculites reesidei through Baculites eliasi biozones. D, Shoreline positions for the Baculites grandis through Baculites clinolobatus biozones. Base map modified from Mereweather and Cobban (1986). Shoreline positions from Gill and Cobban (1966), Izzet et al. (1971), Molenaar (1983), Roehler (1990), Cobban (1993), Cobban et al. (1994), Roberts and Kirshbaum (1995), Kennedy et al. (2000), and Landman and Cobban (2003).
Published: 01 March 2010
for the Baculites grandis through Baculites clinolobatus biozones. Base map modified from Mereweather and Cobban ( 1986 ). Shoreline positions from Gill and Cobban ( 1966 ), Izzet et al. ( 1971 ), Molenaar ( 1983 ), Roehler ( 1990 ), Cobban ( 1993 ), Cobban et al. ( 1994 ), Roberts and Kirshbaum ( 1995
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—West-east conductivity-log and gamma-ray log cross section of Lewis Shale. X shale appears to be approximately equivalent to a black shale horizon in outcrop deposited during Baculites clinolobatu interval of Western Interior fossil zonation. XY (XY′) interval is approximate time equivalent of much of Dad Sandstone Member exposed along west flank of Rawlins uplift. Sandstone immediately beneath X marker (Wamsutter sandstone) is hydrocarbon producer in wells 36, 13, 37, and 38 on this cross section.
Published: 01 July 1987
Figure 8 —West-east conductivity-log and gamma-ray log cross section of Lewis Shale. X shale appears to be approximately equivalent to a black shale horizon in outcrop deposited during Baculites clinolobatu interval of Western Interior fossil zonation. XY (XY′) interval is approximate time
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Biostratigraphic framework for the Gulf and Atlantic Coastal Plains, USA, based on (1) calcareous nannofossils and (2) ammonite zonation (modified from Larina et al. 2016), with tentative correlation to the Western Interior Seaway (WIS) zonation (based on data in Landman et al. 2004a, 2007; Cobban et al. 2006). Also plotted is the phylogenetic analysis of relationships among North American Discoscaphites species from the consensus tree of Landman et al. (2007), with the genus Trachyscaphites as the outgroup. Vertical black lines indicate observed stratigraphic ranges. MS, magnetostratigraphy; B. clinolob., Baculites clinolobatus; H. birkelu., Hoploscaphites birkelundae; H. nebras., Hoploscaphites nebrascensis; Trachyscaph., Trachyscaphites; D. sphaero., Discoscaphites sphaeroidalis; D. jerseyen., Discoscaphites jerseyensis.
Published: 01 February 2023
, magnetostratigraphy; B. clinolob. , Baculites clinolobatus ; H. birkelu. , Hoploscaphites birkelundae ; H. nebras ., Hoploscaphites nebrascensis ; Trachyscaph. , Trachyscaphites ; D. sphaero. , Discoscaphites sphaeroidalis ; D. jerseyen. , Discoscaphites jerseyensis .
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Regional fossil succession in the late Campanian–Maastrichtian. Key to numbered taxa (complete stratigraphic ranges in light gray; abundance biozones of select taxa in dark gray; asterisks indicate biozones present in the Raton Basin); ab=ammonite biozone: (1)Didymoceras cheyennense ab*; (2)Baculites compressus ab*; (3)Baculites cuneatus ab*; (4)Baculites reesidei ab*; (5)Baculites jenseni ab*; (6)Baculites eliasi ab*; (7)Baculites baculus ab*; (8)Baculites grandis ab*; (9)Baculites clinolobatus ab* – “Inoceramus” balchii inoceramid biozone* (undifferentiated); (10)Hoploscaphites birkelundae ab*; (11)Hoploscaphites nicolletii ab; (12)Hoploscaphites nebrascensis ab; (13) CC 24 nannoplankton biozone; (14) CC 25 nannoplankton biozone; (15) CC 26 nannoplankton biozone (16); Hoploscaphites spedeni ab; (17)Hoploscaphites angmartussutensis ab; (18)Wodehouseia spinata palynomorph assemblage biozone*; (19)“Cissites” panduratus megafloral biozone*; (20)Trochocyathus egerius solitary coral biozone*; (21)Baculites undatus ab*; (22)Heteroconopeum ovatum bryozoan biozone*; (23)Hoploscaphites sargklofak ab*; (24)Credneria protophylloides megafloral biozone*; (25)Trochocyathus mitratus – T. speciosus solitary coral biozones (undifferentiated; truncated at top); (26) Known stratigraphic distribution of eastern North American lambeosaurine – ceratopsid dinosaurs (undifferentiated); (27)Ilexpollenites compactus palynomorph biozone*; (28)Tenuipteria fibrosa (radially ribbed variety) bivalve biozone; (29)Tenuipteria fibrosa (concentrically ribbed variety) bivalve biozone*; (30)Baculites meeki ab; (31)Coahuilites sheltoni ab; (32) Known stratigraphic distribution of western North American lambeosaurine and ceratopsid dinosaurs (undifferentiated); (33)Lophidiaster (L. pygmaeus and L. aff. pygmaeus undifferentiated; truncated at base and top). Ages are from Ogg et al. (2016).
Published: 01 June 2017
ab*; (2) Baculites compressus ab*; (3) Baculites cuneatus ab*; (4) Baculites reesidei ab*; (5) Baculites jenseni ab*; (6) Baculites eliasi ab*; (7) Baculites baculus ab*; (8) Baculites grandis ab*; (9) Baculites clinolobatus ab* – “ Inoceramus” balchii inoceramid biozone
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Plot of sample inclination versus stratigraphic height for all paleomagnetic samples analyzed from the Castle Pines core. Symbols same as for Figure 7. 1. Approximate level of Baculites clinolobatus, dated at 69.57 after Hicks et al. (1999). 2. Age and position of top of C31r, dated at 69.01 Ma from Red Bird section by Hicks et al. (1999). Age estimates after Cande and Kent (1995) shown for comparison. 3. Age and position of C30r after Cande and Kent (1995). 4. Kneehills Tuff, Drumheller, Alberta, Canada (dated at 66.56 Ma; sample AK-19, Table 2). Isotopic age projects exactly into middle of C30n, as described by Lerbekmo et al. (1979). 5. Precessional age of base of C29r after D'Hondt et al. (1996) and age from Cande and Kent (1995). 6. 65.51 Ma age of K-T boundary after Hicks et al. (2002), and 65.0 Ma age after Cande and Kent (1995). Also shown is Cande and Kent (1995) age for top of C29r. 7. Projected position of C28r with assigned ages after Cande and Kent (1995). 8. Isotopic age of 63.79 Ma obtained from just below D1-D2 contact (sample KJ0115A, Table 2). 9. D2 sequence dated at 54.3 Ma by Soister and Tschudy (1978).
Published: 01 January 2003
Figure 8. Plot of sample inclination versus stratigraphic height for all paleomagnetic samples analyzed from the Castle Pines core. Symbols same as for Figure 7 . 1. Approximate level of Baculites clinolobatus , dated at 69.57 after Hicks et al. (1999) . 2. Age and position of top of C31r
Journal Article
Journal: AAPG Bulletin
Published: 01 July 1987
AAPG Bulletin (1987) 71 (7): 859–881.
...Figure 8 —West-east conductivity-log and gamma-ray log cross section of Lewis Shale. X shale appears to be approximately equivalent to a black shale horizon in outcrop deposited during Baculites clinolobatu interval of Western Interior fossil zonation. XY (XY′) interval is approximate time...
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First thumbnail for: Shallow-Water and Sub-Storm-Base Deposition of Lew...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1990
AAPG Bulletin (1990) 74 (11): 1695–1717.
...Figure 15 —Approximate positions of depositional environments based on outcrop and subsurface data during (A) early deposition of the Baculites grandis biozone and (B) early deposition of the Baculites clinolobatus biozone. The width of the shelf increased significantly, and the basin...
FIGURES
First thumbnail for: Depositional History of the Maastrichtian Lewis Sh...
Second thumbnail for: Depositional History of the Maastrichtian Lewis Sh...
Third thumbnail for: Depositional History of the Maastrichtian Lewis Sh...
Journal Article
Published: 01 June 2017
Rocky Mountain Geology (2017) 52 (1): 1–16.
... ab*; (2) Baculites compressus ab*; (3) Baculites cuneatus ab*; (4) Baculites reesidei ab*; (5) Baculites jenseni ab*; (6) Baculites eliasi ab*; (7) Baculites baculus ab*; (8) Baculites grandis ab*; (9) Baculites clinolobatus ab* – “ Inoceramus” balchii inoceramid biozone...
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First thumbnail for: New paleontological constraints on the paleogeogra...
Second thumbnail for: New paleontological constraints on the paleogeogra...
Third thumbnail for: New paleontological constraints on the paleogeogra...
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Late Campanian–early Maastrichtian paleogeography of the Western Interior Seaway (WIS; modified from Slattery et al., 2015). Key to numbered records of “Cissites” puilasokensis or “Cissites” panduratus: (1)Heer (1883): early Paleocene; (2)Knowlton (1917), Lee (1917), Wolfe and Upchurch (1987): late Maastrichtian–early Paleocene; (3)Knowlton (1917), Lee (1917), Wolfe and Tanai (1987): early Paleocene; (4)Berry (1922, 1925): late Campanian or early Maastrichtian; (5)Brown (1939): late Maastrichtian; (6)Barclay et al. (2003), Nichols and Johnson (2008): early Paleocene; (7)Johnson and Hickey (1990), Nichols and Johnson (2008): late Maastrichtian. When reviewing these records, which are arranged more or less chronologically, please note that Berry (1922, p. 171) erroneously reported that “C.” panduratus initially had been described from the Mesaverde Formation (no locality given), but that he later corrected this report by acknowledging that, at the time, “C.” panduratus was known only from the Vermejo and Ripley Formations and not the Mesaverde Formation (Berry, 1925, p. 24). Key to lettered paleogeographic features: (a) northern shoreline of the WIS according to Erickson (1978, 1999), Lillegraven and Ostresh (1990), Robinson Roberts and Kirschbaum (1995), and Kennedy et al. (1998); (b) southern shoreline of the WIS according to Lehman (1987) and Blakey (2014); (c) dispersal route for land plants between Asia and western North America in the late Maastrichtian (Peppe et al., 2007; Zakharov et al., 2011); (d) eastern margin of the WIS and general location (e) of a large island or archipelago according to Williams and Stelck (1975). Local paleogeographic map (modified from Miller and McKinney, 2016): Position of western shoreline of the WIS during the Baculites clinolobatus ammonite biozone as reconstructed by Cobban et al. (1994), Landman and Cobban (2003), Slattery et al. (2015), and Miller and McKinney (2016). New data from the Raton Basin, which are discussed in the text, indicate that this shoreline should be shifted about 100 km farther west (white arrow) to a geographic location in the immediate vicinity of Berwind Canyon, Colorado.
Published: 01 June 2017
, 2016 ): Position of western shoreline of the WIS during the Baculites clinolobatus ammonite biozone as reconstructed by Cobban et al. (1994) , Landman and Cobban (2003) , Slattery et al. (2015) , and Miller and McKinney (2016) . New data from the Raton Basin, which are discussed in the text
Journal Article
Journal: AAPG Bulletin
Published: 01 July 1967
AAPG Bulletin (1967) 51 (7): 1361–1367.
... concretions containing Baculites clinolobatus . In this area the Fox Hills appears to be Late Cretaceous (Maestrichtian in age) based on fossil zones in the Pierre Shale ( Cobban, 1958 ). Using the Pierre-Fox Hills contact as a datum, the rocks are nearly horizontal because they dip only about 18 ft per...
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First thumbnail for: New Members of Upper Cretaceous Fox Hills Formatio...
Second thumbnail for: New Members of Upper Cretaceous Fox Hills Formatio...
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—West-east conductivity-log cross section of Lewis Shale. Location of cross section is shown on Figure 2. Cross section (also Figure 8) is tied to an outcrop exposure of Lewis Shale in Sec. 13 and 14, T22N, R89W, measured by Gill et al (1970). Symbols at right of outcrop section on Figures 5 and 8 indicate locations of fossils that can be related to Western Interior biostratigraphic zones (see Figure 3). From bottom to top these represent Baculites eliasi, B. grandis, and B. clinolobatus.
Published: 01 July 1987
on Figures 5 and 8 indicate locations of fossils that can be related to Western Interior biostratigraphic zones (see Figure 3 ). From bottom to top these represent Baculites eliasi, B . grandis , and B. clinolobatus .
Journal Article
Published: 01 January 2003
Rocky Mountain Geology (2003) 38 (1): 1–27.
...Figure 8. Plot of sample inclination versus stratigraphic height for all paleomagnetic samples analyzed from the Castle Pines core. Symbols same as for Figure 7 . 1. Approximate level of Baculites clinolobatus , dated at 69.57 after Hicks et al. (1999) . 2. Age and position of top of C31r...
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First thumbnail for: Magnetostratigraphy of Upper Cretaceous (Maastrich...
Second thumbnail for: Magnetostratigraphy of Upper Cretaceous (Maastrich...
Third thumbnail for: Magnetostratigraphy of Upper Cretaceous (Maastrich...
Journal Article
Published: 01 March 2010
The Journal of Geology (2010) 118 (2): 201–213.
... for the Baculites grandis through Baculites clinolobatus biozones. Base map modified from Mereweather and Cobban ( 1986 ). Shoreline positions from Gill and Cobban ( 1966 ), Izzet et al. ( 1971 ), Molenaar ( 1983 ), Roehler ( 1990 ), Cobban ( 1993 ), Cobban et al. ( 1994 ), Roberts and Kirshbaum ( 1995...
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First thumbnail for: Tectonic Controls on the Genesis and Distribution ...
Second thumbnail for: Tectonic Controls on the Genesis and Distribution ...
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—Correlation of Upper Cretaceous rocks of south-central Wyoming (from Gill et al, 1970) with U.S. Western Interior fossil zones (from Fouch et al, 1983). Only part of stratigraphic section and lower Maestrichtian biostratigraphic zones are shown. Position of Dad Sandstone Member within Lewis Shale is shown schematically; Dad Sandstone Member is time equivalent of Baculites grandis to B. clinolobatus range of Western Interior fossil zonation (Gill et al, 1970). Formations are related to eustatic sea level curves from northern Europe (solid line) (Hancock, 1975) and North American Western Interior seaway (dashed line) (Weimer, 1984). Stratigraphic column from Laramie basin (not located on Figure 2) was measured about 65.5 mi (105 km) east of Rawlins, Wyoming.
Published: 01 July 1987
within Lewis Shale is shown schematically; Dad Sandstone Member is time equivalent of Baculites grandis to B. clinolobatus range of Western Interior fossil zonation ( Gill et al, 1970 ). Formations are related to eustatic sea level curves from northern Europe (solid line) ( Hancock, 1975 ) and North
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1959
AAPG Bulletin (1959) 43 (1): 101–123.
... clinolobatus Elias (youngest) Baculites grandis Hall and Meek Baculites baculus Meek and Hayden Baculites eliasi Cobban Baculites reesidei Elias Baculites compressus Say Baculites corrugatus Elias Exiteloceras jenneyi (Whitfield) Didymoceras? stevensoni (Whitfield...
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First thumbnail for: Pierre Shale Along Western and Northern Flanks of ...
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Third thumbnail for: Pierre Shale Along Western and Northern Flanks of ...