Discoscaphites Meek, 1870

KENNEDY, W. J., LANDMAN, N. H., COBBAN, W. A. & JOHNSON, R. O., 2000, Additions to the Ammonite Fauna of the Upper Cretaceous Navesink Formation of New Jersey, American Museum Novitates 3306, pp. 1-31 : 26

publication ID

https://doi.org/ 10.1206/0003-0082(2000)306<0001:ATTAFO>2.0.CO;2

persistent identifier

https://treatment.plazi.org/id/292A1679-FFD3-FFAC-FD6E-FF51FB11F9A0

treatment provided by

Felipe

scientific name

Discoscaphites Meek, 1870
status

 

Genus Discoscaphites Meek, 1870 View in CoL

TYPE SPECIES: Ammonites Conradi Morton, 1834 (p. 39, pl. 16, fig. 3, by original designation) .

Discoscaphites gulosus (Morton, 1834)

Figure 9G–I View Fig

Ammonites Conradi var. (A) gulosus Morton, 1834: 39 , pl. 16, fig. 2.

Scaphites gulosus (Morton) , Owen, 1852: 578.

Scaphites (Discoscaphites) conradi var. gulosus (Morton) , Meek, 1876: 432, pl. 36, fig. 1.

Discoscaphites conradi var. gulosus (Morton) , Reeside, 1927: 29.

Discoscaphites gulosus (Morton) , Landman and Waage, 1993: 212, figs. 156, 157, 159, 160, 167–180 (with full synonymy).

Discoscaphites gulosus (Morton, 1834) , Cobban and Kennedy, 1995: 29, figs. 10.4, 10.5, 19.20– 19.24, 20.2, 20.8–20.12, 20.14–20.17, 21.18– 21.21.

TYPE: The holotype is ANSP 51552 About ANSP , from the Prairie Bluff Chalk at Prairie Bluff , Alabama .

DESCRIPTION: NJSM 16121 (fig. 9G–I) is most of a stout adult body chamber 42.0 mm long with a whorl height of 20.4 mm. Only one side is preserved. The flank is flattened and the venter is broadly rounded. The ornament comprises five equally spaced rows of small, round tubercles located on low, poorly defined, very weak ribs.

DISCUSSION: This specimen is part of a small macroconch that resembles those illustrated by Landman and Waage (1993) from the Fox Hills Formation of South Dakota.

OCCURRENCE: This specimen was collected from a spoil pile of the Navesink Formation at the Inversand Pit at Sewell, Gloucester County, New Jersey. It could be from a lag deposit above the Navesink Formation, but its state of preservation is characteristic of Navesink fossils. The species is known elsewhere from the Upper Maastrichtian Severn Formation in Maryland, the Prairie Bluff Chalk in Alabama, the Corsicana Formation in Texas, and the Hoploscaphites nicolletii and Jeletzkytes nebrascensis zones of the Fox Hills Formation in South Dakota.

NJSM

New Jersey State Museum

Kingdom

Animalia

Phylum

Mollusca

Class

Cephalopoda

Family

Scaphitidae

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