Current Taxonomic Status of Late Cretaceous Ammonoid Species from the Western Interior Seaway Assigned to the Family Desmoceratidae (Ammonitina: Desmocerataceae)

Jonathan R. Hendricks

Paleontological Research Institution, Ithaca, New York

Note: Names in green are accepted; names in red are synonyms. Return to main list here. This page was last updated May 25, 2017.

Class Cephalopoda

Duration: Aalenian to Lower Santonian (Source: Wright et al., 1996).

Duration: Upper Valanginian to Upper Maastrichtian (Source: Wright et al., 1996).

Duration: Upper Valanginian to Upper Maastrichtian (Source: Wright et al., 1996).

PaleoDB taxon number: 84929.

Duration: Upper Albian to Upper Maastrichtian (Source: Wright et al., 1996).

Type species: Tragodesmoceras scotti Moreman, 1942

Duration: Upper Cenomanian (Source: Wright et al., 1996).

PaleoDB taxon number: 15212.

Original presentation: Moremanoceras straini

Original publication: Kennedy et al. 1988. [p. 36, figs 1a-g, i, t.]

Holotype: USNM 416051.

Type locality: “Cerro de Cristo Rey, New Mexico” (Kennedy and Cobban, 1990a, p. 86).

Type horizon: Boquillas Formation (Kennedy and Cobban, 1990a).

Other specimens: USNM 416052-416060 (paratypes), USNM 420195-420210.

WIS occurrences:

Cenomanian: Eagle Ford Group (basal) (TX) (Kennedy and Cobban, 1990a).

Cenomanian: Boquillas Formation (NM) (Kennedy and Cobban, 1990a).

Cenomanian: Lake Waco Formation (Bluebonnet Member) (TX) (Kennedy and Cobban, 1990a).

Cenomanian: Plesiacanthoceras wyomingense zone (TX) (Kennedy and Cobban, 1990a).

Zonation: Acanthoceras amphibolum zone, Plesiacanthoceras wyomingense zone (Kennedy and Cobban, 1990a).

PaleoDB taxon number: 333411.

References: Kennedy et al. (1988); Kennedy and Cobban (1990a).

Duration: Middle Hauterivian to Lower Maastrichtian (Wright et al., 1996).

Type species: Ammonites planulatus J. de C. Sowerby, 1827

Duration: ?Upper Aptian to Upper Campanian (Wright et al., 1996).