Neocardioceras juddii
- Phylum: Mollusca
- Class: Cephalopoda
- Order: Ammonoidea
- Family: Acanthoceratidae
- Genus: Neocardioceras
- Species: Neocardioceras juddii (Barrois and Guerne, 1878)
Geological Range
Upper Cenomanian.
Neocardioceras juddii Zone: Upper Cenomanian 93.82 ± 0.30 to 93.32 ± 0.38
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)
