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Neocardioceras juddii

Geological Range

Upper Cenomanian.

Paleogeographic Distribution

Texas, New Mexico, and Arizona to Colorado and Utah.

Remarks

Original presentation: Ammonites juddii

Original publication: Barrois and de Guerne. 1878. [p. 46, pl. 1, figs 1a, b, 2a, b].

Types: lost (Cobban, 1988).

Type locality: Novy-Chevriéres, France (Cobban, 1988).

Type horizon: “Pleunus Marls of the Paris Basin” (Cobban, 1988, p. 17).

Zonation: Neocardioceras juddii zone = Upper Cenomanian (93.32 +/- 0.38 Ma) (Cobban et al., 2006).

Other occurrences: Middle Chalk (England) (Wright and Kennedy, 1981); France (Wright and Kennedy, 1981); Belgium (Wright and Kennedy, 1981); Germany (Wright and Kennedy, 1981); and Czechoslovakia (Wright and Kennedy, 1981).

PaleoDB taxon number: 325643.

References: Wright and Kennedy (1981); Cobban (1988).

Stratigraphic Occurrences

Cenomanian
Britton Formation (TX)
Chispa Summit Formation (TX)
Colorado Formation (Bridge Creek Limestone Member) (NM)
Greenhorn Limestone (Bridge Creek Limestone Member) (CO)
Mancos Shale (AZ)
Tropic Shale (UT)
Paratype of <i>Neocardioceras juddii barroisi</i> (BGS Zn9163). Specimen is from the Cenomanian or Turonian of Humble Point, England  (<i>Watinoceras Bed</i>). Image modified from those on the GB3D Type Fossil webpage (http://www.3d-fossils.ac.uk/fossilType.cfm?typSampleId=605781) and reposted here under the same Creative Commons BY-NC-SA license as the original images.
Paratype of Neocardioceras juddii barroisi (BGS Zn9163). Specimen is from the Cenomanian or Turonian of Humble Point, England (Watinoceras Bed). Image modified from those on the GB3D Type Fossil webpage (http://www.3d-fossils.ac.uk/fossilType.cfm?typSampleId=605781) and reposted here under the same Creative Commons BY-NC-SA license as the original images.
Suture patterns of <i>Neocardioceras juddii</i>. See original caption for additional details. Image modified from Fig. 14 in Cobban (1988 in <i>USGS Professional Paper</i> 1473; public domain).
Suture patterns of Neocardioceras juddii. See original caption for additional details. Image modified from Fig. 14 in Cobban (1988 in USGS Professional Paper 1473; public domain).

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