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Hoploscaphites spedeni

Geological Range

Maastrichtian.

Paleogeographic Distribution

South Dakota to North Dakota.

Remarks

3D model of species created by Shellie Luallin:

Original presentation: Jeletzkytes spedeni

Original publication: Landman, N. H. and K. M. Waage. 1993. Scaphitid ammonites of the Upper Cretaceous (Maastrichtian) Fox Hills Formation in South Dakota and Wyoming. Bulletin of the American Museum of Natural History, Number 215, 257 pp. [p. 129-161, figs. 92-119].

Holotype: YPM 27160.

Type locality: Corson County, South Dakota.

Type horizon: Fox Hills Formation (Trail City Member).

Other specimens: YPM 23710, YPM 23124, YPM 24817, YPM 27156, YPM 23122, YPM 23206, YPM 23211, YPM 23775, YPM 23778, YPM 23205, YPM 23704, YPM 23199, YPM 23718, YPM 23204, YPM 23699, YPM 23200, YPM 23706, YPM 23714, YPM 31803, YPM 27156, YPM 27153, YPM 27151, YPM 27152, YPM 23710, YPM 27091, YPM 23062, YPM 23061, YPM 32593, YPM 32602, USNM 468854, USNM 468855, USNM 468856, USNM 468857, USNM 468858; also see Landman and Waage (1993).

PaleoDB taxon number: 145264.

Synonyms: Jeletzkytes spedeni (Landman and Waage, 1993).

Reference: Landman and Waage (1993).

Origin of name: “named for Ian G. Speden” (Landman and Waage, 1993, p. 129).

Stratigraphic Occurrences

Maastrichtian
Fox Hills Formation (Trail City Member) (ND)
Fox Hills Formation (Trail City Member) (SD)
Pierre Shale (Elk Butte Member) (ND)
Pierre Shale (Elk Butte Member) (SD)
Holotype of <i>Hoploscaphites spedeni</i> (YPM 27160) (macroconch). See original caption for additional details. Image modified from figs. 92A-D and 93A in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Holotype of Hoploscaphites spedeni (YPM 27160) (macroconch). See original caption for additional details. Image modified from figs. 92A-D and 93A in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
<i>Hoploscaphites spedeni</i> (YPM 23710) (microconch). See original caption for additional details. Image modified from fig. 104 in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Hoploscaphites spedeni (YPM 23710) (microconch). See original caption for additional details. Image modified from fig. 104 in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
Suture of <i>Hoploscaphites spedeni</i> (microconch). See original caption for additional details. Image modified from fig. 113 in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Suture of Hoploscaphites spedeni (microconch). See original caption for additional details. Image modified from fig. 113 in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
<i>Hoploscaphites spedeni</i> from the Fox Hills Fm. (Trail City Member) of Corson County, South Dakota (YPM 23136).
Hoploscaphites spedeni from the Fox Hills Fm. (Trail City Member) of Corson County, South Dakota (YPM 23136).
<i>Hoploscaphites spedeni</i> from the Fox Hills Fm. (Trail City Member) of Dewey County, South Dakota (YPM 23220).
Hoploscaphites spedeni from the Fox Hills Fm. (Trail City Member) of Dewey County, South Dakota (YPM 23220).

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