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Hoploscaphites nebrascensis

Geological Range

Maastrichtian.

Paleogeographic Distribution

Nebraska to North Dakota, Wyoming.

Remarks

3D models of species created by Shellie Luallin:

Original presentation: Ammonites nebrascensis

Original publication: Owen. 1952. [figs. 6g-i, 7a-c, g, h, 8a-d, g-i, 9g-j].

Lectotype: USNM 20242.

Type locality: “Fox Hills, Nebraska” (Kennedy et al., 1998, p. 766).

Type horizon: likely “Timber Lake Member of the Fox Hills Formation” (Landman and Waage, 1993, p. 161).

Other specimens: USNM 398, USNM 402, UC 6379, YPM 23146, YPM 23165, YPM 23144, YPM 23145, YPM 23172, YPM 23151, YPM 23147, YPM 23147, YPM 23687, YPM 23198, YPM 23195, YPM 23697, YPM 23735, YPM 23735, MAPS A2046a; also see Landman and Waage (1993).

Other occurrences: “Severn Formation of Maryland” (Landman and Waage, 1993, p. 161).

Zonation: Hoploscaphites nebrascensis zone (= Jeletzkytes nebrascensis zone) (Cobban et al., 2006).

PaleoDB taxon number: 129481.

Synonyms: Scaphites conradi Morton, 1856 (source: Landman and Waage, 1993); Ammonites cheyennensis Owen, 1852 (source: Landman and Waage, 1993), Ammonites moreauensis Owen, 1852 (source: Landman and Waage, 1993).

References: Landman and Waage (1993); Kennedy et al. (1998); Landman et al. (2015).

Origin of name: Nebraska Territory (see Cobban et al., 2006).

Stratigraphic Occurrences

Maastrichtian
Fox Hills Formation NE)
Fox Hills Formation (Timber Lake Member) (SD)
Fox Hills Formation (Timber Lake Member) (WY)
Fox Hills Formation equivalent (SD)
Fox Hills Formation equivalent (ND)
Pierre Shale (Elk Butte Member)
Lectotype of <i>Hoploscaphites nebrascensis</i> (USNM 20242) (macroconch). Original unmodified images provided by courtesy of the Smithsonian NMNH and adapted and presented here under a Creative Commons BY-NC 4.0 license (NMNH GUID http://n2t.net/ark:/65665/3cec1105d-09ac-4811-b027-7fce3304b6c0).
Lectotype of Hoploscaphites nebrascensis (USNM 20242) (macroconch). Original unmodified images provided by courtesy of the Smithsonian NMNH and adapted and presented here under a Creative Commons BY-NC 4.0 license (NMNH GUID http://n2t.net/ark:/65665/3cec1105d-09ac-4811-b027-7fce3304b6c0).
<i>Hoploscaphites nebrascensis</i> (USNM 20242) (macroconch). See original caption for additional details. Image modified from figs. 120A-C in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Hoploscaphites nebrascensis (USNM 20242) (macroconch). See original caption for additional details. Image modified from figs. 120A-C in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
<i>Hoploscaphites nebrascensis</i> (USNM YPM 23687) (microconch). See original caption for additional details. Image modified from figs. 129A-C in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Hoploscaphites nebrascensis (USNM YPM 23687) (microconch). See original caption for additional details. Image modified from figs. 129A-C in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
Sutures of <i>Hoploscaphites nebrascensis</i>. See original caption for additional details. Image modified from fig. 135 in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Sutures of Hoploscaphites nebrascensis. See original caption for additional details. Image modified from fig. 135 in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.

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