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Discoscaphites rossi

Geological Range

Maastrichtian.

Paleogeographic Distribution

South Dakota.

Remarks

Original presentation: Discoscaphites rossi

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. 231-240; figs. 181-189].

Holotype: YPM 23052.

Type locality: Dewey County, South Dakota.

Type horizon: Fox Hills Formation (Timber Lake Member).

Other specimens: AMNH 44340, AMNH 44335, AMNH 44336, AMNH 44344, AMNH 44679, AMNH 44680, YPM 27084, YPM 23085, YPM 23095, YPM 23108, YPM 23096, YPM 23090, YPM 23094, YPM 23097, YPM 27081, YPM 23100, YPM 23083, YPM 23105, YPM 23093, YPM 23103.

PaleoDB taxon number: 145275.

Reference: Landman and Waage (1993).

Origin of name: “named in honor of Mrs. Helen Ross” (Landman and Waage, 1993, p. 232).

Stratigraphic Occurrences

Maastrichtian
Fox Hills Formation (Timber Lake Member) (SD)
Holotype of <i>Discoscaphites rossi</i> (YPM 23052) (macroconch). See original caption for additional details. Image modified from figs. 181A-E in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Holotype of Discoscaphites rossi (YPM 23052) (macroconch). See original caption for additional details. Image modified from figs. 181A-E in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
Specimen of <i>Discoscaphites rossi</i> (YPM 23090) (microconch). See original caption for additional details. Image modified from figs. 181Q-T in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Specimen of Discoscaphites rossi (YPM 23090) (microconch). See original caption for additional details. Image modified from figs. 181Q-T in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
Sutures of <i>Discoscaphites rossi</i>. See original caption for additional details. Image modified from fig. 184 in Landman and Waage (1993 in <i>Bulletin of the American Museum of Natural History</i>, no. 215) and used with permission.
Sutures of Discoscaphites rossi. See original caption for additional details. Image modified from fig. 184 in Landman and Waage (1993 in Bulletin of the American Museum of Natural History, no. 215) and used with permission.
<i>Discoscaphites rossi</i> from the Maastrichtian Fox Hills Fm. (Timber Lake Member) of Dewey County, South Dakota (YPM 35733).
Discoscaphites rossi from the Maastrichtian Fox Hills Fm. (Timber Lake Member) of Dewey County, South Dakota (YPM 35733).

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